[FLINK-4505] [cluster mngt] Implement TaskManager component's startup

The TaskManagerRunner now contains the startup logic for the TaskManager's 
components.


Project: http://git-wip-us.apache.org/repos/asf/flink/repo
Commit: http://git-wip-us.apache.org/repos/asf/flink/commit/c34f13c2
Tree: http://git-wip-us.apache.org/repos/asf/flink/tree/c34f13c2
Diff: http://git-wip-us.apache.org/repos/asf/flink/diff/c34f13c2

Branch: refs/heads/flip-6
Commit: c34f13c26bf215fbde6c3f28547f1a31ca6cbc99
Parents: b8c6b99
Author: 淘江 <taojiang....@alibaba-inc.com>
Authored: Fri Sep 2 18:00:49 2016 +0800
Committer: Stephan Ewen <se...@apache.org>
Committed: Fri Oct 14 15:14:41 2016 +0200

----------------------------------------------------------------------
 .../runtime/taskexecutor/TaskExecutor.java      | 766 +------------------
 .../runtime/taskmanager/TaskManagerRunner.java  | 749 ++++++++++++++++++
 .../runtime/taskexecutor/TaskExecutorTest.java  |  53 +-
 3 files changed, 804 insertions(+), 764 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/flink/blob/c34f13c2/flink-runtime/src/main/java/org/apache/flink/runtime/taskexecutor/TaskExecutor.java
----------------------------------------------------------------------
diff --git 
a/flink-runtime/src/main/java/org/apache/flink/runtime/taskexecutor/TaskExecutor.java
 
b/flink-runtime/src/main/java/org/apache/flink/runtime/taskexecutor/TaskExecutor.java
index 9d9ad2a..8ce2780 100644
--- 
a/flink-runtime/src/main/java/org/apache/flink/runtime/taskexecutor/TaskExecutor.java
+++ 
b/flink-runtime/src/main/java/org/apache/flink/runtime/taskexecutor/TaskExecutor.java
@@ -18,74 +18,29 @@
 
 package org.apache.flink.runtime.taskexecutor;
 
-import akka.actor.ActorSystem;
-import com.typesafe.config.Config;
 import org.apache.flink.api.common.time.Time;
 import org.apache.flink.runtime.checkpoint.CheckpointRecoveryFactory;
 import org.apache.flink.runtime.clusterframework.types.AllocationID;
-import org.apache.flink.runtime.io.network.ConnectionManager;
-import org.apache.flink.runtime.io.network.LocalConnectionManager;
-import org.apache.flink.runtime.io.network.TaskEventDispatcher;
-import org.apache.flink.runtime.io.network.buffer.NetworkBufferPool;
-import org.apache.flink.runtime.io.network.netty.NettyConnectionManager;
-import org.apache.flink.runtime.io.network.partition.ResultPartitionManager;
 import org.apache.flink.runtime.jobmanager.SubmittedJobGraphStore;
-import org.apache.flink.runtime.query.KvStateRegistry;
-import org.apache.flink.runtime.query.netty.DisabledKvStateRequestStats;
-import org.apache.flink.runtime.query.netty.KvStateServer;
 import org.apache.flink.runtime.resourcemanager.SlotRequestRegistered;
 import org.apache.flink.runtime.resourcemanager.SlotRequestReply;
 import org.apache.flink.runtime.taskmanager.TaskManagerLocation;
-import org.apache.flink.util.Preconditions;
 import org.jboss.netty.channel.ChannelException;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import org.apache.flink.api.common.JobID;
-import org.apache.flink.configuration.ConfigConstants;
-import org.apache.flink.configuration.Configuration;
-import org.apache.flink.configuration.IllegalConfigurationException;
-import org.apache.flink.core.memory.HeapMemorySegment;
-import org.apache.flink.core.memory.HybridMemorySegment;
-import org.apache.flink.core.memory.MemorySegmentFactory;
-import org.apache.flink.core.memory.MemoryType;
-import org.apache.flink.runtime.akka.AkkaUtils;
 import org.apache.flink.annotation.VisibleForTesting;
 import org.apache.flink.runtime.clusterframework.types.ResourceID;
 import org.apache.flink.runtime.highavailability.HighAvailabilityServices;
 import org.apache.flink.runtime.io.disk.iomanager.IOManager;
-import org.apache.flink.runtime.io.disk.iomanager.IOManager.IOMode;
-import org.apache.flink.runtime.io.disk.iomanager.IOManagerAsync;
 import org.apache.flink.runtime.io.network.NetworkEnvironment;
-import org.apache.flink.runtime.io.network.netty.NettyConfig;
-import org.apache.flink.runtime.leaderelection.LeaderElectionService;
 import org.apache.flink.runtime.leaderretrieval.LeaderRetrievalListener;
-import org.apache.flink.runtime.leaderretrieval.LeaderRetrievalService;
 import org.apache.flink.runtime.memory.MemoryManager;
 import org.apache.flink.runtime.rpc.RpcEndpoint;
 import org.apache.flink.runtime.rpc.RpcMethod;
 import org.apache.flink.runtime.rpc.RpcService;
-import org.apache.flink.runtime.rpc.akka.AkkaRpcService;
-import org.apache.flink.runtime.taskmanager.MemoryLogger;
-import org.apache.flink.runtime.util.EnvironmentInformation;
-import org.apache.flink.runtime.util.LeaderRetrievalUtils;
-import org.apache.flink.runtime.taskmanager.NetworkEnvironmentConfiguration;
-import org.apache.flink.util.MathUtils;
-import org.apache.flink.util.NetUtils;
-
-import scala.Tuple2;
-import scala.Option;
-import scala.Some;
-import scala.concurrent.duration.Duration;
-import scala.concurrent.duration.FiniteDuration;
-
-import java.io.File;
-import java.io.IOException;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import java.net.BindException;
-import java.net.InetAddress;
-import java.net.InetSocketAddress;
 import java.util.UUID;
-import java.util.concurrent.TimeUnit;
 
 import static org.apache.flink.util.Preconditions.checkArgument;
 import static org.apache.flink.util.Preconditions.checkNotNull;
@@ -98,12 +53,10 @@ public class TaskExecutor extends 
RpcEndpoint<TaskExecutorGateway> {
 
        private static final Logger LOG = 
LoggerFactory.getLogger(TaskExecutor.class);
 
-       /** The unique resource ID of this TaskExecutor */
-       private final ResourceID resourceID;
-
+       /** The connection information of this task manager */
        private final TaskManagerLocation taskManagerLocation;
 
-       /** The access to the leader election and metadata storage services */
+       /** The access to the leader election and retrieval services */
        private final HighAvailabilityServices haServices;
 
        /** The task manager configuration */
@@ -128,28 +81,26 @@ public class TaskExecutor extends 
RpcEndpoint<TaskExecutorGateway> {
        // 
------------------------------------------------------------------------
 
        public TaskExecutor(
-                       TaskExecutorConfiguration taskExecutorConfig,
-                       ResourceID resourceID,
-                       TaskManagerLocation taskManagerLocation,
-                       MemoryManager memoryManager,
-                       IOManager ioManager,
-                       NetworkEnvironment networkEnvironment,
-                       RpcService rpcService,
-                       HighAvailabilityServices haServices) {
+               TaskExecutorConfiguration taskExecutorConfig,
+               TaskManagerLocation taskManagerLocation,
+               RpcService rpcService,
+               MemoryManager memoryManager,
+               IOManager ioManager,
+               NetworkEnvironment networkEnvironment,
+               HighAvailabilityServices haServices) {
 
                super(rpcService);
 
                checkArgument(taskExecutorConfig.getNumberOfSlots() > 0, "The 
number of slots has to be larger than 0.");
 
                this.taskExecutorConfig = checkNotNull(taskExecutorConfig);
-               this.resourceID = checkNotNull(resourceID);
                this.taskManagerLocation = checkNotNull(taskManagerLocation);
                this.memoryManager = checkNotNull(memoryManager);
                this.ioManager = checkNotNull(ioManager);
                this.networkEnvironment = checkNotNull(networkEnvironment);
                this.haServices = checkNotNull(haServices);
 
-               this.numberOfSlots = taskExecutorConfig.getNumberOfSlots();
+               this.numberOfSlots =  taskExecutorConfig.getNumberOfSlots();
        }
 
        // 
------------------------------------------------------------------------
@@ -207,7 +158,6 @@ public class TaskExecutor extends 
RpcEndpoint<TaskExecutorGateway> {
                }
        }
 
-       /**
         * Requests a slot from the TaskManager
         *
         * @param allocationID id for the request
@@ -220,126 +170,11 @@ public class TaskExecutor extends 
RpcEndpoint<TaskExecutorGateway> {
        }
 
        /**
-        * Starts and runs the TaskManager.
-        * <p/>
-        * This method first tries to select the network interface to use for 
the TaskManager
-        * communication. The network interface is used both for the actor 
communication
-        * (coordination) as well as for the data exchange between task 
managers. Unless
-        * the hostname/interface is explicitly configured in the 
configuration, this
-        * method will try out various interfaces and methods to connect to the 
JobManager
-        * and select the one where the connection attempt is successful.
-        * <p/>
-        * After selecting the network interface, this method brings up an 
actor system
-        * for the TaskManager and its actors, starts the TaskManager's services
-        * (library cache, shuffle network stack, ...), and starts the 
TaskManager itself.
-        *
-        * @param configuration    The configuration for the TaskManager.
-        * @param resourceID       The id of the resource which the task 
manager will run on.
-        */
-       public static void selectNetworkInterfaceAndRunTaskManager(
-               Configuration configuration,
-               ResourceID resourceID) throws Exception {
-
-               final InetSocketAddress taskManagerAddress = 
selectNetworkInterfaceAndPort(configuration);
-
-               runTaskManager(taskManagerAddress.getHostName(), resourceID, 
taskManagerAddress.getPort(), configuration);
-       }
-
-       private static InetSocketAddress 
selectNetworkInterfaceAndPort(Configuration configuration)
-               throws Exception {
-               String taskManagerHostname = 
configuration.getString(ConfigConstants.TASK_MANAGER_HOSTNAME_KEY, null);
-               if (taskManagerHostname != null) {
-                       LOG.info("Using configured hostname/address for 
TaskManager: " + taskManagerHostname);
-               } else {
-                       LeaderRetrievalService leaderRetrievalService = 
LeaderRetrievalUtils.createLeaderRetrievalService(configuration);
-                       FiniteDuration lookupTimeout = 
AkkaUtils.getLookupTimeout(configuration);
-
-                       InetAddress taskManagerAddress = 
LeaderRetrievalUtils.findConnectingAddress(leaderRetrievalService, 
lookupTimeout);
-                       taskManagerHostname = taskManagerAddress.getHostName();
-                       LOG.info("TaskManager will use hostname/address '{}' 
({}) for communication.",
-                               taskManagerHostname, 
taskManagerAddress.getHostAddress());
-               }
-
-               // if no task manager port has been configured, use 0 (system 
will pick any free port)
-               final int actorSystemPort = 
configuration.getInteger(ConfigConstants.TASK_MANAGER_IPC_PORT_KEY, 0);
-               if (actorSystemPort < 0 || actorSystemPort > 65535) {
-                       throw new IllegalConfigurationException("Invalid value 
for '" +
-                               ConfigConstants.TASK_MANAGER_IPC_PORT_KEY +
-                               "' (port for the TaskManager actor system) : " 
+ actorSystemPort +
-                               " - Leave config parameter empty or use 0 to 
let the system choose a port automatically.");
-               }
-
-               return new InetSocketAddress(taskManagerHostname, 
actorSystemPort);
-       }
-
-       /**
-        * Starts and runs the TaskManager. Brings up an actor system for the 
TaskManager and its
-        * actors, starts the TaskManager's services (library cache, shuffle 
network stack, ...),
-        * and starts the TaskManager itself.
-        * <p/>
-        * This method will also spawn a process reaper for the TaskManager 
(kill the process if
-        * the actor fails) and optionally start the JVM memory logging thread.
-        *
-        * @param taskManagerHostname The hostname/address of the interface 
where the actor system
-        *                            will communicate.
-        * @param resourceID          The id of the resource which the task 
manager will run on.
-        * @param actorSystemPort   The port at which the actor system will 
communicate.
-        * @param configuration       The configuration for the TaskManager.
-        */
-       private static void runTaskManager(
-               String taskManagerHostname,
-               ResourceID resourceID,
-               int actorSystemPort,
-               final Configuration configuration) throws Exception {
-
-               LOG.info("Starting TaskManager");
-
-               // Bring up the TaskManager actor system first, bind it to the 
given address.
-
-               LOG.info("Starting TaskManager actor system at " +
-                       NetUtils.hostAndPortToUrlString(taskManagerHostname, 
actorSystemPort));
-
-               final ActorSystem taskManagerSystem;
-               try {
-                       Tuple2<String, Object> address = new Tuple2<String, 
Object>(taskManagerHostname, actorSystemPort);
-                       Config akkaConfig = 
AkkaUtils.getAkkaConfig(configuration, new Some<>(address));
-                       LOG.debug("Using akka configuration\n " + akkaConfig);
-                       taskManagerSystem = 
AkkaUtils.createActorSystem(akkaConfig);
-               } catch (Throwable t) {
-                       if (t instanceof ChannelException) {
-                               Throwable cause = t.getCause();
-                               if (cause != null && t.getCause() instanceof 
BindException) {
-                                       String address = 
NetUtils.hostAndPortToUrlString(taskManagerHostname, actorSystemPort);
-                                       throw new IOException("Unable to bind 
TaskManager actor system to address " +
-                                               address + " - " + 
cause.getMessage(), t);
-                               }
-                       }
-                       throw new Exception("Could not create TaskManager actor 
system", t);
-               }
-
-               // start akka rpc service based on actor system
-               final Time timeout = 
Time.milliseconds(AkkaUtils.getTimeout(configuration).toMillis());
-               final AkkaRpcService akkaRpcService = new 
AkkaRpcService(taskManagerSystem, timeout);
-
-               // start high availability service to implement 
getResourceManagerLeaderRetriever method only
-               final HighAvailabilityServices haServices = new 
HighAvailabilityServices() {
-                       @Override
-                       public LeaderRetrievalService 
getResourceManagerLeaderRetriever() throws Exception {
-                               return 
LeaderRetrievalUtils.createLeaderRetrievalService(configuration);
-                       }
-
-                       @Override
                        public LeaderRetrievalService 
getJobMasterLeaderRetriever(JobID jobID) throws Exception {
                                return null;
                        }
 
                        @Override
-                       public LeaderElectionService 
getResourceManagerLeaderElectionService() throws Exception {
-                               return null;
-                       }
-
-                       @Override
-                       public LeaderElectionService 
getJobMasterLeaderElectionService(JobID jobID) throws Exception {
                                return null;
                        }
 
@@ -350,552 +185,12 @@ public class TaskExecutor extends 
RpcEndpoint<TaskExecutorGateway> {
 
                        @Override
                        public SubmittedJobGraphStore 
getSubmittedJobGraphStore() throws Exception {
-                               return null;
-                       }
-               };
-
-               // start all the TaskManager services (network stack,  library 
cache, ...)
-               // and the TaskManager actor
-               try {
-                       LOG.info("Starting TaskManager actor");
-                       TaskExecutor taskExecutor = 
startTaskManagerComponentsAndActor(
-                               configuration,
-                               resourceID,
-                               akkaRpcService,
-                               taskManagerHostname,
-                               haServices,
-                               false);
-
-                       taskExecutor.start();
-
-                       // if desired, start the logging daemon that 
periodically logs the memory usage information
-                       if (LOG.isInfoEnabled() && configuration.getBoolean(
-                               
ConfigConstants.TASK_MANAGER_DEBUG_MEMORY_USAGE_START_LOG_THREAD,
-                               
ConfigConstants.DEFAULT_TASK_MANAGER_DEBUG_MEMORY_USAGE_START_LOG_THREAD)) {
-                               LOG.info("Starting periodic memory usage 
logger");
-
-                               long interval = configuration.getLong(
-                                       
ConfigConstants.TASK_MANAGER_DEBUG_MEMORY_USAGE_LOG_INTERVAL_MS,
-                                       
ConfigConstants.DEFAULT_TASK_MANAGER_DEBUG_MEMORY_USAGE_LOG_INTERVAL_MS);
-
-                               MemoryLogger logger = new MemoryLogger(LOG, 
interval, taskManagerSystem);
-                               logger.start();
-                       }
-
-                       // block until everything is done
-                       taskManagerSystem.awaitTermination();
-               } catch (Throwable t) {
-                       LOG.error("Error while starting up taskManager", t);
-                       try {
-                               taskManagerSystem.shutdown();
-                       } catch (Throwable tt) {
-                               LOG.warn("Could not cleanly shut down actor 
system", tt);
-                       }
-                       throw t;
-               }
-       }
-
-       // 
--------------------------------------------------------------------------
-       //  Starting and running the TaskManager
-       // 
--------------------------------------------------------------------------
-
-       /**
-        * @param configuration                 The configuration for the 
TaskManager.
-        * @param resourceID                    The id of the resource which 
the task manager will run on.
-        * @param rpcService                  The rpc service which is used to 
start and connect to the TaskManager RpcEndpoint .
-        * @param taskManagerHostname       The hostname/address that describes 
the TaskManager's data location.
-        * @param haServices        Optionally, a high availability service can 
be provided. If none is given,
-        *                                      then a HighAvailabilityServices 
is constructed from the configuration.
-        * @param localTaskManagerCommunication     If true, the TaskManager 
will not initiate the TCP network stack.
-        * @return An ActorRef to the TaskManager actor.
-        * @throws IllegalConfigurationException     Thrown, if the given 
config contains illegal values.
-        * @throws IOException      Thrown, if any of the I/O components (such 
as buffer pools,
-        *                                       I/O manager, ...) cannot be 
properly started.
-        * @throws Exception      Thrown is some other error occurs while 
parsing the configuration
-        *                                      or starting the TaskManager 
components.
-        */
-       public static TaskExecutor startTaskManagerComponentsAndActor(
-               Configuration configuration,
-               ResourceID resourceID,
-               RpcService rpcService,
-               String taskManagerHostname,
-               HighAvailabilityServices haServices,
-               boolean localTaskManagerCommunication) throws Exception {
-
-               final TaskExecutorConfiguration taskExecutorConfig = 
parseTaskManagerConfiguration(
-                       configuration, taskManagerHostname, 
localTaskManagerCommunication);
-
-               TaskManagerComponents taskManagerComponents = 
createTaskManagerComponents(
-                       resourceID,
-                       InetAddress.getByName(taskManagerHostname),
-                       taskExecutorConfig,
-                       configuration);
-
-               final TaskExecutor taskExecutor = new TaskExecutor(
-                       taskExecutorConfig,
-                       resourceID,
-                       taskManagerComponents.getTaskManagerLocation(),
-                       taskManagerComponents.getMemoryManager(),
-                       taskManagerComponents.getIOManager(),
-                       taskManagerComponents.getNetworkEnvironment(),
-                       rpcService,
-                       haServices);
-
-               return taskExecutor;
-       }
-
-       /**
-        * Creates and returns the task manager components.
-        *
-        * @param resourceID resource ID of the task manager
-        * @param taskManagerAddress address of the task manager
-        * @param taskExecutorConfig task manager configuration
-        * @param configuration of Flink
-        * @return task manager components
-        * @throws Exception
-        */
-       private static TaskExecutor.TaskManagerComponents 
createTaskManagerComponents(
-               ResourceID resourceID,
-               InetAddress taskManagerAddress,
-               TaskExecutorConfiguration taskExecutorConfig,
-               Configuration configuration) throws Exception {
-               MemoryType memType = 
taskExecutorConfig.getNetworkConfig().memoryType();
-
-               // pre-start checks
-               checkTempDirs(taskExecutorConfig.getTmpDirPaths());
-
-               NetworkEnvironmentConfiguration networkEnvironmentConfiguration 
= taskExecutorConfig.getNetworkConfig();
-
-               NetworkBufferPool networkBufferPool = new NetworkBufferPool(
-                       networkEnvironmentConfiguration.numNetworkBuffers(),
-                       networkEnvironmentConfiguration.networkBufferSize(),
-                       networkEnvironmentConfiguration.memoryType());
-
-               ConnectionManager connectionManager;
-
-               if (networkEnvironmentConfiguration.nettyConfig().isDefined()) {
-                       connectionManager = new 
NettyConnectionManager(networkEnvironmentConfiguration.nettyConfig().get());
-               } else {
-                       connectionManager = new LocalConnectionManager();
-               }
-
-               ResultPartitionManager resultPartitionManager = new 
ResultPartitionManager();
-               TaskEventDispatcher taskEventDispatcher = new 
TaskEventDispatcher();
-
-               KvStateRegistry kvStateRegistry = new KvStateRegistry();
-
-               KvStateServer kvStateServer;
-
-               if (networkEnvironmentConfiguration.nettyConfig().isDefined()) {
-                       NettyConfig nettyConfig = 
networkEnvironmentConfiguration.nettyConfig().get();
-
-                       int numNetworkThreads = 
networkEnvironmentConfiguration.queryServerNetworkThreads() == 0 ?
-                               nettyConfig.getNumberOfSlots() : 
networkEnvironmentConfiguration.queryServerNetworkThreads();
-
-                       int numQueryThreads = 
networkEnvironmentConfiguration.queryServerQueryThreads() == 0 ?
-                               nettyConfig.getNumberOfSlots() : 
networkEnvironmentConfiguration.queryServerQueryThreads();
-
-                       kvStateServer = new KvStateServer(
-                               taskManagerAddress,
-                               
networkEnvironmentConfiguration.queryServerPort(),
-                               numNetworkThreads,
-                               numQueryThreads,
-                               kvStateRegistry,
-                               new DisabledKvStateRequestStats());
-               } else {
-                       kvStateServer = null;
-               }
-
-               // we start the network first, to make sure it can allocate its 
buffers first
-               final NetworkEnvironment network = new NetworkEnvironment(
-                       networkBufferPool,
-                       connectionManager,
-                       resultPartitionManager,
-                       taskEventDispatcher,
-                       kvStateRegistry,
-                       kvStateServer,
-                       networkEnvironmentConfiguration.ioMode(),
-                       
networkEnvironmentConfiguration.partitionRequestInitialBackoff(),
-                       
networkEnvironmentConfiguration.partitinRequestMaxBackoff());
-
-               network.start();
-
-               TaskManagerLocation taskManagerLocation = new 
TaskManagerLocation(
-                       resourceID,
-                       taskManagerAddress,
-                       network.getConnectionManager().getDataPort());
-
-               // computing the amount of memory to use depends on how much 
memory is available
-               // it strictly needs to happen AFTER the network stack has been 
initialized
-
-               // check if a value has been configured
-               long configuredMemory = 
configuration.getLong(ConfigConstants.TASK_MANAGER_MEMORY_SIZE_KEY, -1L);
-               checkConfigParameter(configuredMemory == -1 || configuredMemory 
> 0, configuredMemory,
-                       ConfigConstants.TASK_MANAGER_MEMORY_SIZE_KEY,
-                       "MemoryManager needs at least one MB of memory. " +
-                               "If you leave this config parameter empty, the 
system automatically " +
-                               "pick a fraction of the available memory.");
-
-               final long memorySize;
-               boolean preAllocateMemory = configuration.getBoolean(
-                       ConfigConstants.TASK_MANAGER_MEMORY_PRE_ALLOCATE_KEY,
-                       
ConfigConstants.DEFAULT_TASK_MANAGER_MEMORY_PRE_ALLOCATE);
-               if (configuredMemory > 0) {
-                       if (preAllocateMemory) {
-                               LOG.info("Using {} MB for managed memory." , 
configuredMemory);
-                       } else {
-                               LOG.info("Limiting managed memory to {} MB, 
memory will be allocated lazily." , configuredMemory);
-                       }
-                       memorySize = configuredMemory << 20; // megabytes to 
bytes
-               } else {
-                       float fraction = configuration.getFloat(
-                               
ConfigConstants.TASK_MANAGER_MEMORY_FRACTION_KEY,
-                               
ConfigConstants.DEFAULT_MEMORY_MANAGER_MEMORY_FRACTION);
-                       checkConfigParameter(fraction > 0.0f && fraction < 
1.0f, fraction,
-                               
ConfigConstants.TASK_MANAGER_MEMORY_FRACTION_KEY,
-                               "MemoryManager fraction of the free memory must 
be between 0.0 and 1.0");
-
-                       if (memType == MemoryType.HEAP) {
-                               long relativeMemSize = (long) 
(EnvironmentInformation.getSizeOfFreeHeapMemoryWithDefrag() * fraction);
-                               if (preAllocateMemory) {
-                                       LOG.info("Using {} of the currently 
free heap space for managed heap memory ({} MB)." ,
-                                               fraction , relativeMemSize >> 
20);
-                               } else {
-                                       LOG.info("Limiting managed memory to {} 
of the currently free heap space ({} MB), " +
-                                               "memory will be allocated 
lazily." , fraction , relativeMemSize >> 20);
-                               }
-                               memorySize = relativeMemSize;
-                       } else if (memType == MemoryType.OFF_HEAP) {
-                               // The maximum heap memory has been adjusted 
according to the fraction
-                               long maxMemory = 
EnvironmentInformation.getMaxJvmHeapMemory();
-                               long directMemorySize = (long) (maxMemory / 
(1.0 - fraction) * fraction);
-                               if (preAllocateMemory) {
-                                       LOG.info("Using {} of the maximum 
memory size for managed off-heap memory ({} MB)." ,
-                                               fraction, directMemorySize >> 
20);
-                               } else {
-                                       LOG.info("Limiting managed memory to {} 
of the maximum memory size ({} MB)," +
-                                               " memory will be allocated 
lazily.", fraction, directMemorySize >> 20);
-                               }
-                               memorySize = directMemorySize;
-                       } else {
-                               throw new RuntimeException("No supported memory 
type detected.");
-                       }
-               }
-
-               // now start the memory manager
-               final MemoryManager memoryManager;
-               try {
-                       memoryManager = new MemoryManager(
-                               memorySize,
-                               taskExecutorConfig.getNumberOfSlots(),
-                               
taskExecutorConfig.getNetworkConfig().networkBufferSize(),
-                               memType,
-                               preAllocateMemory);
-               } catch (OutOfMemoryError e) {
-                       if (memType == MemoryType.HEAP) {
-                               throw new Exception("OutOfMemory error (" + 
e.getMessage() +
-                                       ") while allocating the TaskManager 
heap memory (" + memorySize + " bytes).", e);
-                       } else if (memType == MemoryType.OFF_HEAP) {
-                               throw new Exception("OutOfMemory error (" + 
e.getMessage() +
-                                       ") while allocating the TaskManager 
off-heap memory (" + memorySize +
-                                       " bytes).Try increasing the maximum 
direct memory (-XX:MaxDirectMemorySize)", e);
-                       } else {
-                               throw e;
-                       }
-               }
-
-               // start the I/O manager, it will create some temp directories.
-               final IOManager ioManager = new 
IOManagerAsync(taskExecutorConfig.getTmpDirPaths());
-
-               return new 
TaskExecutor.TaskManagerComponents(taskManagerLocation, memoryManager, 
ioManager, network);
-       }
-
-       // 
--------------------------------------------------------------------------
-       //  Parsing and checking the TaskManager Configuration
-       // 
--------------------------------------------------------------------------
-
-       /**
-        * Utility method to extract TaskManager config parameters from the 
configuration and to
-        * sanity check them.
-        *
-        * @param configuration                 The configuration.
-        * @param taskManagerHostname           The host name under which the 
TaskManager communicates.
-        * @param localTaskManagerCommunication             True, to skip 
initializing the network stack.
-        *                                      Use only in cases where only 
one task manager runs.
-        * @return TaskExecutorConfiguration that wrappers 
InstanceConnectionInfo, NetworkEnvironmentConfiguration, etc.
-        */
-       private static TaskExecutorConfiguration parseTaskManagerConfiguration(
-               Configuration configuration,
-               String taskManagerHostname,
-               boolean localTaskManagerCommunication) throws Exception {
-
-               // ------- read values from the config and check them ---------
-               //                      (a lot of them)
-
-               // ----> hosts / ports for communication and data exchange
-
-               int dataport = 
configuration.getInteger(ConfigConstants.TASK_MANAGER_DATA_PORT_KEY,
-                       ConfigConstants.DEFAULT_TASK_MANAGER_DATA_PORT);
-               if (dataport == 0) {
-                       dataport = NetUtils.getAvailablePort();
-               }
-               checkConfigParameter(dataport > 0, dataport, 
ConfigConstants.TASK_MANAGER_DATA_PORT_KEY,
-                       "Leave config parameter empty or use 0 to let the 
system choose a port automatically.");
-
-               InetAddress taskManagerAddress = 
InetAddress.getByName(taskManagerHostname);
-               final InetSocketAddress taskManagerInetSocketAddress = new 
InetSocketAddress(taskManagerAddress, dataport);
-
-               // ----> memory / network stack (shuffles/broadcasts), task 
slots, temp directories
-
-               // we need this because many configs have been written with a 
"-1" entry
-               int slots = 
configuration.getInteger(ConfigConstants.TASK_MANAGER_NUM_TASK_SLOTS, 1);
-               if (slots == -1) {
-                       slots = 1;
-               }
-               checkConfigParameter(slots >= 1, slots, 
ConfigConstants.TASK_MANAGER_NUM_TASK_SLOTS,
-                       "Number of task slots must be at least one.");
-
-               final int numNetworkBuffers = configuration.getInteger(
-                       ConfigConstants.TASK_MANAGER_NETWORK_NUM_BUFFERS_KEY,
-                       
ConfigConstants.DEFAULT_TASK_MANAGER_NETWORK_NUM_BUFFERS);
-               checkConfigParameter(numNetworkBuffers > 0, numNetworkBuffers,
-                       ConfigConstants.TASK_MANAGER_NETWORK_NUM_BUFFERS_KEY, 
"");
-
-               final int pageSize = configuration.getInteger(
-                       ConfigConstants.TASK_MANAGER_MEMORY_SEGMENT_SIZE_KEY,
-                       
ConfigConstants.DEFAULT_TASK_MANAGER_MEMORY_SEGMENT_SIZE);
-               // check page size of for minimum size
-               checkConfigParameter(pageSize >= MemoryManager.MIN_PAGE_SIZE, 
pageSize,
-                       ConfigConstants.TASK_MANAGER_MEMORY_SEGMENT_SIZE_KEY,
-                       "Minimum memory segment size is " + 
MemoryManager.MIN_PAGE_SIZE);
-               // check page size for power of two
-               checkConfigParameter(MathUtils.isPowerOf2(pageSize), pageSize,
-                       ConfigConstants.TASK_MANAGER_MEMORY_SEGMENT_SIZE_KEY,
-                       "Memory segment size must be a power of 2.");
-
-               // check whether we use heap or off-heap memory
-               final MemoryType memType;
-               if 
(configuration.getBoolean(ConfigConstants.TASK_MANAGER_MEMORY_OFF_HEAP_KEY, 
false)) {
-                       memType = MemoryType.OFF_HEAP;
-               } else {
-                       memType = MemoryType.HEAP;
-               }
-
-               // initialize the memory segment factory accordingly
-               if (memType == MemoryType.HEAP) {
-                       if 
(!MemorySegmentFactory.initializeIfNotInitialized(HeapMemorySegment.FACTORY)) {
-                               throw new Exception("Memory type is set to heap 
memory, but memory segment " +
-                                       "factory has been initialized for 
off-heap memory segments");
-                       }
-               } else {
-                       if 
(!MemorySegmentFactory.initializeIfNotInitialized(HybridMemorySegment.FACTORY)) 
{
-                               throw new Exception("Memory type is set to 
off-heap memory, but memory segment " +
-                                       "factory has been initialized for heap 
memory segments");
-                       }
-               }
-
-               final String[] tmpDirs = configuration.getString(
-                       ConfigConstants.TASK_MANAGER_TMP_DIR_KEY,
-                       
ConfigConstants.DEFAULT_TASK_MANAGER_TMP_PATH).split(",|" + File.pathSeparator);
-
-               final NettyConfig nettyConfig;
-               if (!localTaskManagerCommunication) {
-                       nettyConfig = new NettyConfig(
-                               taskManagerInetSocketAddress.getAddress(),
-                               taskManagerInetSocketAddress.getPort(),
-                               pageSize,
-                               slots,
-                               configuration);
-               } else {
-                       nettyConfig = null;
-               }
-
-               // Default spill I/O mode for intermediate results
-               final String syncOrAsync = configuration.getString(
-                       ConfigConstants.TASK_MANAGER_NETWORK_DEFAULT_IO_MODE,
-                       
ConfigConstants.DEFAULT_TASK_MANAGER_NETWORK_DEFAULT_IO_MODE);
-
-               final IOMode ioMode;
-               if (syncOrAsync.equals("async")) {
-                       ioMode = IOManager.IOMode.ASYNC;
-               } else {
-                       ioMode = IOManager.IOMode.SYNC;
-               }
-
-               final int queryServerPort =  configuration.getInteger(
-                       ConfigConstants.QUERYABLE_STATE_SERVER_PORT,
-                       ConfigConstants.DEFAULT_QUERYABLE_STATE_SERVER_PORT);
-
-               final int queryServerNetworkThreads =  configuration.getInteger(
-                       ConfigConstants.QUERYABLE_STATE_SERVER_NETWORK_THREADS,
-                       
ConfigConstants.DEFAULT_QUERYABLE_STATE_SERVER_NETWORK_THREADS);
-
-               final int queryServerQueryThreads =  configuration.getInteger(
-                       ConfigConstants.QUERYABLE_STATE_SERVER_QUERY_THREADS,
-                       
ConfigConstants.DEFAULT_QUERYABLE_STATE_SERVER_QUERY_THREADS);
-
-               final NetworkEnvironmentConfiguration networkConfig = new 
NetworkEnvironmentConfiguration(
-                       numNetworkBuffers,
-                       pageSize,
-                       memType,
-                       ioMode,
-                       queryServerPort,
-                       queryServerNetworkThreads,
-                       queryServerQueryThreads,
-                       Option.apply(nettyConfig),
-                       500,
-                       30000);
-
-               // ----> timeouts, library caching, profiling
-
-               final FiniteDuration timeout;
-               try {
-                       timeout = AkkaUtils.getTimeout(configuration);
-               } catch (Exception e) {
-                       throw new IllegalArgumentException(
-                               "Invalid format for '" + 
ConfigConstants.AKKA_ASK_TIMEOUT +
-                                       "'.Use formats like '50 s' or '1 min' 
to specify the timeout.");
-               }
-               LOG.info("Messages between TaskManager and JobManager have a 
max timeout of " + timeout);
-
-               final long cleanupInterval = configuration.getLong(
-                       ConfigConstants.LIBRARY_CACHE_MANAGER_CLEANUP_INTERVAL,
-                       
ConfigConstants.DEFAULT_LIBRARY_CACHE_MANAGER_CLEANUP_INTERVAL) * 1000;
-
-               final FiniteDuration finiteRegistrationDuration;
-               try {
-                       Duration maxRegistrationDuration = 
Duration.create(configuration.getString(
-                               
ConfigConstants.TASK_MANAGER_MAX_REGISTRATION_DURATION,
-                               
ConfigConstants.DEFAULT_TASK_MANAGER_MAX_REGISTRATION_DURATION));
-                       if (maxRegistrationDuration.isFinite()) {
-                               finiteRegistrationDuration = new 
FiniteDuration(maxRegistrationDuration.toSeconds(), TimeUnit.SECONDS);
-                       } else {
-                               finiteRegistrationDuration = null;
-                       }
-               } catch (NumberFormatException e) {
-                       throw new IllegalArgumentException("Invalid format for 
parameter " +
-                               
ConfigConstants.TASK_MANAGER_MAX_REGISTRATION_DURATION, e);
-               }
-
-               final FiniteDuration initialRegistrationPause;
-               try {
-                       Duration pause = 
Duration.create(configuration.getString(
-                               
ConfigConstants.TASK_MANAGER_INITIAL_REGISTRATION_PAUSE,
-                               
ConfigConstants.DEFAULT_TASK_MANAGER_INITIAL_REGISTRATION_PAUSE));
-                       if (pause.isFinite()) {
-                               initialRegistrationPause = new 
FiniteDuration(pause.toSeconds(), TimeUnit.SECONDS);
-                       } else {
-                               throw new IllegalArgumentException("The initial 
registration pause must be finite: " + pause);
-                       }
-               } catch (NumberFormatException e) {
-                       throw new IllegalArgumentException("Invalid format for 
parameter " +
-                               
ConfigConstants.TASK_MANAGER_INITIAL_REGISTRATION_PAUSE, e);
-               }
-
-               final FiniteDuration maxRegistrationPause;
-               try {
-                       Duration pause = 
Duration.create(configuration.getString(
-                               
ConfigConstants.TASK_MANAGER_MAX_REGISTARTION_PAUSE,
-                               
ConfigConstants.DEFAULT_TASK_MANAGER_MAX_REGISTRATION_PAUSE));
-                       if (pause.isFinite()) {
-                               maxRegistrationPause = new 
FiniteDuration(pause.toSeconds(), TimeUnit.SECONDS);
-                       } else {
-                               throw new IllegalArgumentException("The maximum 
registration pause must be finite: " + pause);
-                       }
-               } catch (NumberFormatException e) {
-                       throw new IllegalArgumentException("Invalid format for 
parameter " +
-                               
ConfigConstants.TASK_MANAGER_INITIAL_REGISTRATION_PAUSE, e);
-               }
-
-               final FiniteDuration refusedRegistrationPause;
-               try {
-                       Duration pause = 
Duration.create(configuration.getString(
-                               
ConfigConstants.TASK_MANAGER_REFUSED_REGISTRATION_PAUSE,
-                               
ConfigConstants.DEFAULT_TASK_MANAGER_REFUSED_REGISTRATION_PAUSE));
-                       if (pause.isFinite()) {
-                               refusedRegistrationPause = new 
FiniteDuration(pause.toSeconds(), TimeUnit.SECONDS);
-                       } else {
-                               throw new IllegalArgumentException("The refused 
registration pause must be finite: " + pause);
-                       }
-               } catch (NumberFormatException e) {
-                       throw new IllegalArgumentException("Invalid format for 
parameter " +
-                               
ConfigConstants.TASK_MANAGER_INITIAL_REGISTRATION_PAUSE, e);
-               }
-
-               return new TaskExecutorConfiguration(
-                       tmpDirs,
-                       cleanupInterval,
-                       networkConfig,
-                       timeout,
-                       finiteRegistrationDuration,
-                       slots,
-                       configuration,
-                       initialRegistrationPause,
-                       maxRegistrationPause,
-                       refusedRegistrationPause);
-       }
-
-       /**
-        * Validates a condition for a config parameter and displays a standard 
exception, if the
-        * the condition does not hold.
-        *
-        * @param condition    The condition that must hold. If the condition 
is false, an exception is thrown.
-        * @param parameter    The parameter value. Will be shown in the 
exception message.
-        * @param name         The name of the config parameter. Will be shown 
in the exception message.
-        * @param errorMessage The optional custom error message to append to 
the exception message.
-        */
-       private static void checkConfigParameter(
-               boolean condition,
-               Object parameter,
-               String name,
-               String errorMessage) {
-               if (!condition) {
-                       throw new IllegalConfigurationException("Invalid 
configuration value for " + name + " : " + parameter + " - " + errorMessage);
-               }
-       }
-
-       /**
-        * Validates that all the directories denoted by the strings do 
actually exist, are proper
-        * directories (not files), and are writable.
-        *
-        * @param tmpDirs The array of directory paths to check.
-        * @throws Exception Thrown if any of the directories does not exist or 
is not writable
-        *                   or is a file, rather than a directory.
-        */
-       private static void checkTempDirs(String[] tmpDirs) throws IOException {
-               for (String dir : tmpDirs) {
-                       if (dir != null && !dir.equals("")) {
-                               File file = new File(dir);
-                               if (!file.exists()) {
-                                       throw new IOException("Temporary file 
directory " + file.getAbsolutePath() + " does not exist.");
-                               }
-                               if (!file.isDirectory()) {
-                                       throw new IOException("Temporary file 
directory " + file.getAbsolutePath() + " is not a directory.");
-                               }
-                               if (!file.canWrite()) {
-                                       throw new IOException("Temporary file 
directory " + file.getAbsolutePath() + " is not writable.");
-                               }
-
-                               if (LOG.isInfoEnabled()) {
-                                       long totalSpaceGb = 
file.getTotalSpace() >> 30;
-                                       long usableSpaceGb = 
file.getUsableSpace() >> 30;
-                                       double usablePercentage = 
(double)usableSpaceGb / totalSpaceGb * 100;
-                                       String path = file.getAbsolutePath();
-                                       LOG.info(String.format("Temporary file 
directory '%s': total %d GB, " + "usable %d GB (%.2f%% usable)",
-                                               path, totalSpaceGb, 
usableSpaceGb, usablePercentage));
-                               }
-                       } else {
-                               throw new IllegalArgumentException("Temporary 
file directory #$id is null.");
-                       }
-               }
-       }
-
        // 
------------------------------------------------------------------------
        //  Properties
        // 
------------------------------------------------------------------------
 
        public ResourceID getResourceID() {
-               return resourceID;
+               return taskManagerLocation.getResourceID();
        }
 
        // 
------------------------------------------------------------------------
@@ -959,37 +254,4 @@ public class TaskExecutor extends 
RpcEndpoint<TaskExecutorGateway> {
                }
        }
 
-       private static class TaskManagerComponents {
-               private final TaskManagerLocation taskManagerLocation;
-               private final MemoryManager memoryManager;
-               private final IOManager ioManager;
-               private final NetworkEnvironment networkEnvironment;
-
-               private TaskManagerComponents(
-                               TaskManagerLocation taskManagerLocation,
-                               MemoryManager memoryManager,
-                               IOManager ioManager,
-                               NetworkEnvironment networkEnvironment) {
-                       this.taskManagerLocation = 
Preconditions.checkNotNull(taskManagerLocation);
-                       this.memoryManager = 
Preconditions.checkNotNull(memoryManager);
-                       this.ioManager = Preconditions.checkNotNull(ioManager);
-                       this.networkEnvironment = 
Preconditions.checkNotNull(networkEnvironment);
-               }
-
-               public MemoryManager getMemoryManager() {
-                       return memoryManager;
-               }
-
-               public IOManager getIOManager() {
-                       return ioManager;
-               }
-
-               public NetworkEnvironment getNetworkEnvironment() {
-                       return networkEnvironment;
-               }
-
-               public TaskManagerLocation getTaskManagerLocation() {
-                       return taskManagerLocation;
-               }
-       }
 }

http://git-wip-us.apache.org/repos/asf/flink/blob/c34f13c2/flink-runtime/src/main/java/org/apache/flink/runtime/taskmanager/TaskManagerRunner.java
----------------------------------------------------------------------
diff --git 
a/flink-runtime/src/main/java/org/apache/flink/runtime/taskmanager/TaskManagerRunner.java
 
b/flink-runtime/src/main/java/org/apache/flink/runtime/taskmanager/TaskManagerRunner.java
new file mode 100644
index 0000000..4f756fb
--- /dev/null
+++ 
b/flink-runtime/src/main/java/org/apache/flink/runtime/taskmanager/TaskManagerRunner.java
@@ -0,0 +1,749 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.flink.runtime.taskmanager;
+
+import org.apache.flink.api.common.JobID;
+import org.apache.flink.configuration.ConfigConstants;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.configuration.IllegalConfigurationException;
+import org.apache.flink.core.memory.HeapMemorySegment;
+import org.apache.flink.core.memory.HybridMemorySegment;
+import org.apache.flink.core.memory.MemorySegmentFactory;
+import org.apache.flink.core.memory.MemoryType;
+import org.apache.flink.runtime.akka.AkkaUtils;
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+import org.apache.flink.runtime.highavailability.HighAvailabilityServices;
+import org.apache.flink.runtime.io.disk.iomanager.IOManager;
+import org.apache.flink.runtime.io.disk.iomanager.IOManagerAsync;
+import org.apache.flink.runtime.io.network.ConnectionManager;
+import org.apache.flink.runtime.io.network.LocalConnectionManager;
+import org.apache.flink.runtime.io.network.NetworkEnvironment;
+import org.apache.flink.runtime.io.network.TaskEventDispatcher;
+import org.apache.flink.runtime.io.network.buffer.NetworkBufferPool;
+import org.apache.flink.runtime.io.network.netty.NettyConfig;
+import org.apache.flink.runtime.io.network.netty.NettyConnectionManager;
+import org.apache.flink.runtime.io.network.partition.ResultPartitionManager;
+import org.apache.flink.runtime.leaderelection.LeaderElectionService;
+import org.apache.flink.runtime.leaderretrieval.LeaderRetrievalService;
+import org.apache.flink.runtime.memory.MemoryManager;
+import org.apache.flink.runtime.query.KvStateRegistry;
+import org.apache.flink.runtime.query.netty.DisabledKvStateRequestStats;
+import org.apache.flink.runtime.query.netty.KvStateServer;
+import org.apache.flink.runtime.rpc.RpcService;
+import org.apache.flink.runtime.rpc.akka.AkkaRpcService;
+import org.apache.flink.runtime.taskexecutor.TaskExecutor;
+import org.apache.flink.runtime.taskexecutor.TaskExecutorConfiguration;
+import org.apache.flink.runtime.util.EnvironmentInformation;
+import org.apache.flink.runtime.util.LeaderRetrievalUtils;
+import org.apache.flink.util.MathUtils;
+import org.apache.flink.util.NetUtils;
+
+import akka.actor.ActorSystem;
+import akka.util.Timeout;
+import com.typesafe.config.Config;
+import org.apache.flink.util.Preconditions;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import scala.Option;
+import scala.Some;
+import scala.Tuple2;
+import scala.concurrent.duration.Duration;
+import scala.concurrent.duration.FiniteDuration;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.util.concurrent.TimeUnit;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
+/**
+ * This class is the executable entry point for the task manager in yarn or 
standalone mode.
+ * It constructs the related components (network, I/O manager, memory manager, 
RPC service, HA service)
+ * and starts them.
+ */
+public class TaskManagerRunner {
+
+       private static final Logger LOG = 
LoggerFactory.getLogger(TaskManagerRunner.class);
+
+       /**
+        * Constructs related components of the TaskManager and starts them.
+        *
+        * @param configuration                 The configuration for the 
TaskManager.
+        * @param resourceID                    The id of the resource which 
the task manager will run on.
+        * @param rpcService                    Optionally, The rpc service 
which is used to start and connect to the TaskManager RpcEndpoint .
+        *                                                 If none is given, 
then a RpcService is constructed from the configuration.
+        * @param taskManagerHostname   Optionally, The hostname/address that 
describes the TaskManager's data location.
+        *                                                 If none is given, it 
can be got from the configuration.
+        * @param localTaskManagerCommunication      If true, the TaskManager 
will not initiate the TCP network stack.
+        * @param haServices                    Optionally, a high availability 
service can be provided. If none is given,
+        *                                                 then a 
HighAvailabilityServices is constructed from the configuration.
+        */
+       public static void createAndStartComponents(
+               final Configuration configuration,
+               final ResourceID resourceID,
+               RpcService rpcService,
+               String taskManagerHostname,
+               boolean localTaskManagerCommunication,
+               HighAvailabilityServices haServices) throws Exception {
+
+               checkNotNull(configuration);
+               checkNotNull(resourceID);
+
+               if (taskManagerHostname == null || 
taskManagerHostname.isEmpty()) {
+                       taskManagerHostname = 
selectNetworkInterface(configuration);
+               }
+
+               if (rpcService == null) {
+                       // if no task manager port has been configured, use 0 
(system will pick any free port)
+                       final int actorSystemPort = 
configuration.getInteger(ConfigConstants.TASK_MANAGER_IPC_PORT_KEY, 0);
+                       if (actorSystemPort < 0 || actorSystemPort > 65535) {
+                               throw new 
IllegalConfigurationException("Invalid value for '" +
+                                       
ConfigConstants.TASK_MANAGER_IPC_PORT_KEY +
+                                       "' (port for the TaskManager actor 
system) : " + actorSystemPort +
+                                       " - Leave config parameter empty or use 
0 to let the system choose a port automatically.");
+                       }
+                       rpcService = createRpcService(configuration, 
taskManagerHostname, actorSystemPort);
+               }
+
+               if(haServices == null) {
+                       // start high availability service to implement 
getResourceManagerLeaderRetriever method only
+                       haServices = new HighAvailabilityServices() {
+                               @Override
+                               public LeaderRetrievalService 
getResourceManagerLeaderRetriever() throws Exception {
+                                       return 
LeaderRetrievalUtils.createLeaderRetrievalService(configuration);
+                               }
+
+                               @Override
+                               public LeaderElectionService 
getResourceManagerLeaderElectionService() throws Exception {
+                                       return null;
+                               }
+
+                               @Override
+                               public LeaderElectionService 
getJobMasterLeaderElectionService(JobID jobID) throws Exception {
+                                       return null;
+                               }
+                       };
+               }
+
+               createAndStartTaskManagerComponents(
+                       configuration,
+                       resourceID,
+                       rpcService,
+                       taskManagerHostname,
+                       haServices,
+                       localTaskManagerCommunication);
+       }
+
+       /**
+        * <p/>
+        * This method tries to select the network interface to use for the 
TaskManager
+        * communication. The network interface is used both for the actor 
communication
+        * (coordination) as well as for the data exchange between task 
managers. Unless
+        * the hostname/interface is explicitly configured in the 
configuration, this
+        * method will try out various interfaces and methods to connect to the 
JobManager
+        * and select the one where the connection attempt is successful.
+        * <p/>
+        *
+        * @param configuration    The configuration for the TaskManager.
+        * @return  The host name under which the TaskManager communicates.
+        */
+       private static String selectNetworkInterface(Configuration 
configuration) throws Exception {
+               String taskManagerHostname = 
configuration.getString(ConfigConstants.TASK_MANAGER_HOSTNAME_KEY, null);
+               if (taskManagerHostname != null) {
+                       LOG.info("Using configured hostname/address for 
TaskManager: " + taskManagerHostname);
+               } else {
+                       LeaderRetrievalService leaderRetrievalService = 
LeaderRetrievalUtils.createLeaderRetrievalService(configuration);
+                       FiniteDuration lookupTimeout = 
AkkaUtils.getLookupTimeout(configuration);
+
+                       InetAddress taskManagerAddress = 
LeaderRetrievalUtils.findConnectingAddress(leaderRetrievalService, 
lookupTimeout);
+                       taskManagerHostname = taskManagerAddress.getHostName();
+                       LOG.info("TaskManager will use hostname/address '{}' 
({}) for communication.",
+                               taskManagerHostname, 
taskManagerAddress.getHostAddress());
+               }
+
+               return taskManagerHostname;
+       }
+
+       /**
+        * Utility method to create RPC service from configuration and 
hostname, port.
+        *
+        * @param configuration                 The configuration for the 
TaskManager.
+        * @param taskManagerHostname   The hostname/address that describes the 
TaskManager's data location.
+        * @param actorSystemPort           If true, the TaskManager will not 
initiate the TCP network stack.
+        * @return   The rpc service which is used to start and connect to the 
TaskManager RpcEndpoint .
+        * @throws java.io.IOException      Thrown, if the actor system can not 
bind to the address
+        * @throws java.lang.Exception      Thrown is some other error occurs 
while creating akka actor system
+        */
+       private static RpcService createRpcService(Configuration configuration, 
String taskManagerHostname, int actorSystemPort)
+               throws Exception{
+
+               // Bring up the TaskManager actor system first, bind it to the 
given address.
+
+               LOG.info("Starting TaskManager actor system at " +
+                       NetUtils.hostAndPortToUrlString(taskManagerHostname, 
actorSystemPort));
+
+               final ActorSystem taskManagerSystem;
+               try {
+                       Tuple2<String, Object> address = new Tuple2<String, 
Object>(taskManagerHostname, actorSystemPort);
+                       Config akkaConfig = 
AkkaUtils.getAkkaConfig(configuration, new Some<>(address));
+                       LOG.debug("Using akka configuration\n " + akkaConfig);
+                       taskManagerSystem = 
AkkaUtils.createActorSystem(akkaConfig);
+               } catch (Throwable t) {
+                       if (t instanceof 
org.jboss.netty.channel.ChannelException) {
+                               Throwable cause = t.getCause();
+                               if (cause != null && t.getCause() instanceof 
java.net.BindException) {
+                                       String address = 
NetUtils.hostAndPortToUrlString(taskManagerHostname, actorSystemPort);
+                                       throw new IOException("Unable to bind 
TaskManager actor system to address " +
+                                               address + " - " + 
cause.getMessage(), t);
+                               }
+                       }
+                       throw new Exception("Could not create TaskManager actor 
system", t);
+               }
+
+               // start akka rpc service based on actor system
+               final Timeout timeout = new 
Timeout(AkkaUtils.getTimeout(configuration).toMillis(), TimeUnit.MILLISECONDS);
+               final AkkaRpcService akkaRpcService = new 
AkkaRpcService(taskManagerSystem, timeout);
+
+               return akkaRpcService;
+       }
+
+       /**
+        * @param configuration                 The configuration for the 
TaskManager.
+        * @param resourceID                    The id of the resource which 
the task manager will run on.
+        * @param rpcService                    The rpc service which is used 
to start and connect to the TaskManager RpcEndpoint .
+        * @param taskManagerHostname   The hostname/address that describes the 
TaskManager's data location.
+        * @param haServices                    Optionally, a high availability 
service can be provided. If none is given,
+        *                                                  then a 
HighAvailabilityServices is constructed from the configuration.
+        * @param localTaskManagerCommunication     If true, the TaskManager 
will not initiate the TCP network stack.
+        * @throws IllegalConfigurationException        Thrown, if the given 
config contains illegal values.
+        * @throws IOException      Thrown, if any of the I/O components (such 
as buffer pools, I/O manager, ...)
+        *                                              cannot be properly 
started.
+        * @throws Exception      Thrown is some other error occurs while 
parsing the configuration or
+        *                                              starting the 
TaskManager components.
+        */
+       private static void createAndStartTaskManagerComponents(
+               Configuration configuration,
+               ResourceID resourceID,
+               RpcService rpcService,
+               String taskManagerHostname,
+               HighAvailabilityServices haServices,
+               boolean localTaskManagerCommunication) throws Exception {
+
+               final TaskExecutorConfiguration taskManagerConfig = 
parseTaskManagerConfiguration(
+                       configuration, taskManagerHostname, 
localTaskManagerCommunication);
+
+               TaskManagerComponents taskManagerComponents = 
createTaskManagerComponents(
+                       resourceID,
+                       InetAddress.getByName(taskManagerHostname),
+                       taskManagerConfig,
+                       configuration);
+
+               final TaskExecutor taskExecutor = new TaskExecutor(
+                       taskManagerConfig,
+                       taskManagerComponents.getTaskManagerLocation(),
+                       rpcService, taskManagerComponents.getMemoryManager(),
+                       taskManagerComponents.getIOManager(),
+                       taskManagerComponents.getNetworkEnvironment(),
+                       haServices);
+
+               taskExecutor.start();
+       }
+
+       /**
+        * Creates and returns the task manager components.
+        *
+        * @param resourceID resource ID of the task manager
+        * @param taskManagerAddress address of the task manager
+        * @param taskExecutorConfig task manager configuration
+        * @param configuration of Flink
+        * @return task manager components
+        * @throws Exception
+        */
+       private static TaskManagerComponents createTaskManagerComponents(
+               ResourceID resourceID,
+               InetAddress taskManagerAddress,
+               TaskExecutorConfiguration taskExecutorConfig,
+               Configuration configuration) throws Exception {
+
+               MemoryType memType = 
taskExecutorConfig.getNetworkConfig().memoryType();
+
+               // pre-start checks
+               checkTempDirs(taskExecutorConfig.getTmpDirPaths());
+
+               NetworkEnvironmentConfiguration networkEnvironmentConfiguration 
= taskExecutorConfig.getNetworkConfig();
+
+               NetworkBufferPool networkBufferPool = new NetworkBufferPool(
+                       networkEnvironmentConfiguration.numNetworkBuffers(),
+                       networkEnvironmentConfiguration.networkBufferSize(),
+                       networkEnvironmentConfiguration.memoryType());
+
+               ConnectionManager connectionManager;
+
+               if (networkEnvironmentConfiguration.nettyConfig().isDefined()) {
+                       connectionManager = new 
NettyConnectionManager(networkEnvironmentConfiguration.nettyConfig().get());
+               } else {
+                       connectionManager = new LocalConnectionManager();
+               }
+
+               ResultPartitionManager resultPartitionManager = new 
ResultPartitionManager();
+               TaskEventDispatcher taskEventDispatcher = new 
TaskEventDispatcher();
+
+               KvStateRegistry kvStateRegistry = new KvStateRegistry();
+
+               KvStateServer kvStateServer;
+
+               if (networkEnvironmentConfiguration.nettyConfig().isDefined()) {
+                       NettyConfig nettyConfig = 
networkEnvironmentConfiguration.nettyConfig().get();
+
+                       int numNetworkThreads = 
networkEnvironmentConfiguration.queryServerNetworkThreads() == 0 ?
+                               nettyConfig.getNumberOfSlots() : 
networkEnvironmentConfiguration.queryServerNetworkThreads();
+
+                       int numQueryThreads = 
networkEnvironmentConfiguration.queryServerQueryThreads() == 0 ?
+                               nettyConfig.getNumberOfSlots() : 
networkEnvironmentConfiguration.queryServerQueryThreads();
+
+                       kvStateServer = new KvStateServer(
+                               taskManagerAddress,
+                               
networkEnvironmentConfiguration.queryServerPort(),
+                               numNetworkThreads,
+                               numQueryThreads,
+                               kvStateRegistry,
+                               new DisabledKvStateRequestStats());
+               } else {
+                       kvStateServer = null;
+               }
+
+               // we start the network first, to make sure it can allocate its 
buffers first
+               final NetworkEnvironment network = new NetworkEnvironment(
+                       networkBufferPool,
+                       connectionManager,
+                       resultPartitionManager,
+                       taskEventDispatcher,
+                       kvStateRegistry,
+                       kvStateServer,
+                       networkEnvironmentConfiguration.ioMode(),
+                       
networkEnvironmentConfiguration.partitionRequestInitialBackoff(),
+                       
networkEnvironmentConfiguration.partitinRequestMaxBackoff());
+
+               network.start();
+
+               final TaskManagerLocation taskManagerLocation = new 
TaskManagerLocation(
+                       resourceID,
+                       taskManagerAddress,
+                       network.getConnectionManager().getDataPort());
+
+               // computing the amount of memory to use depends on how much 
memory is available
+               // it strictly needs to happen AFTER the network stack has been 
initialized
+
+               // check if a value has been configured
+               long configuredMemory = 
configuration.getLong(ConfigConstants.TASK_MANAGER_MEMORY_SIZE_KEY, -1L);
+               checkConfigParameter(configuredMemory == -1 || configuredMemory 
> 0, configuredMemory,
+                       ConfigConstants.TASK_MANAGER_MEMORY_SIZE_KEY,
+                       "MemoryManager needs at least one MB of memory. " +
+                               "If you leave this config parameter empty, the 
system automatically " +
+                               "pick a fraction of the available memory.");
+
+               final long memorySize;
+               boolean preAllocateMemory = configuration.getBoolean(
+                       ConfigConstants.TASK_MANAGER_MEMORY_PRE_ALLOCATE_KEY,
+                       
ConfigConstants.DEFAULT_TASK_MANAGER_MEMORY_PRE_ALLOCATE);
+               if (configuredMemory > 0) {
+                       if (preAllocateMemory) {
+                               LOG.info("Using {} MB for managed memory." , 
configuredMemory);
+                       } else {
+                               LOG.info("Limiting managed memory to {} MB, 
memory will be allocated lazily." , configuredMemory);
+                       }
+                       memorySize = configuredMemory << 20; // megabytes to 
bytes
+               } else {
+                       float fraction = configuration.getFloat(
+                               
ConfigConstants.TASK_MANAGER_MEMORY_FRACTION_KEY,
+                               
ConfigConstants.DEFAULT_MEMORY_MANAGER_MEMORY_FRACTION);
+                       checkConfigParameter(fraction > 0.0f && fraction < 
1.0f, fraction,
+                               
ConfigConstants.TASK_MANAGER_MEMORY_FRACTION_KEY,
+                               "MemoryManager fraction of the free memory must 
be between 0.0 and 1.0");
+
+                       if (memType == MemoryType.HEAP) {
+                               long relativeMemSize = (long) 
(EnvironmentInformation.getSizeOfFreeHeapMemoryWithDefrag() * fraction);
+                               if (preAllocateMemory) {
+                                       LOG.info("Using {} of the currently 
free heap space for managed heap memory ({} MB)." ,
+                                               fraction , relativeMemSize >> 
20);
+                               } else {
+                                       LOG.info("Limiting managed memory to {} 
of the currently free heap space ({} MB), " +
+                                               "memory will be allocated 
lazily." , fraction , relativeMemSize >> 20);
+                               }
+                               memorySize = relativeMemSize;
+                       } else if (memType == MemoryType.OFF_HEAP) {
+                               // The maximum heap memory has been adjusted 
according to the fraction
+                               long maxMemory = 
EnvironmentInformation.getMaxJvmHeapMemory();
+                               long directMemorySize = (long) (maxMemory / 
(1.0 - fraction) * fraction);
+                               if (preAllocateMemory) {
+                                       LOG.info("Using {} of the maximum 
memory size for managed off-heap memory ({} MB)." ,
+                                               fraction, directMemorySize >> 
20);
+                               } else {
+                                       LOG.info("Limiting managed memory to {} 
of the maximum memory size ({} MB)," +
+                                               " memory will be allocated 
lazily.", fraction, directMemorySize >> 20);
+                               }
+                               memorySize = directMemorySize;
+                       } else {
+                               throw new RuntimeException("No supported memory 
type detected.");
+                       }
+               }
+
+               // now start the memory manager
+               final MemoryManager memoryManager;
+               try {
+                       memoryManager = new MemoryManager(
+                               memorySize,
+                               taskExecutorConfig.getNumberOfSlots(),
+                               
taskExecutorConfig.getNetworkConfig().networkBufferSize(),
+                               memType,
+                               preAllocateMemory);
+               } catch (OutOfMemoryError e) {
+                       if (memType == MemoryType.HEAP) {
+                               throw new Exception("OutOfMemory error (" + 
e.getMessage() +
+                                       ") while allocating the TaskManager 
heap memory (" + memorySize + " bytes).", e);
+                       } else if (memType == MemoryType.OFF_HEAP) {
+                               throw new Exception("OutOfMemory error (" + 
e.getMessage() +
+                                       ") while allocating the TaskManager 
off-heap memory (" + memorySize +
+                                       " bytes).Try increasing the maximum 
direct memory (-XX:MaxDirectMemorySize)", e);
+                       } else {
+                               throw e;
+                       }
+               }
+
+               // start the I/O manager, it will create some temp directories.
+               final IOManager ioManager = new 
IOManagerAsync(taskExecutorConfig.getTmpDirPaths());
+
+               return new TaskManagerComponents(taskManagerLocation, 
memoryManager, ioManager, network);
+       }
+
+       // 
--------------------------------------------------------------------------
+       //  Parsing and checking the TaskManager Configuration
+       // 
--------------------------------------------------------------------------
+
+       /**
+        * Utility method to extract TaskManager config parameters from the 
configuration and to
+        * sanity check them.
+        *
+        * @param configuration                         The configuration.
+        * @param taskManagerHostname           The host name under which the 
TaskManager communicates.
+        * @param localTaskManagerCommunication             True, to skip 
initializing the network stack.
+        *                                      Use only in cases where only 
one task manager runs.
+        * @return TaskExecutorConfiguration that wrappers 
InstanceConnectionInfo, NetworkEnvironmentConfiguration, etc.
+        */
+       private static TaskExecutorConfiguration parseTaskManagerConfiguration(
+               Configuration configuration,
+               String taskManagerHostname,
+               boolean localTaskManagerCommunication) throws Exception {
+
+               // ------- read values from the config and check them ---------
+               //                      (a lot of them)
+
+               // ----> hosts / ports for communication and data exchange
+
+               int dataport = 
configuration.getInteger(ConfigConstants.TASK_MANAGER_DATA_PORT_KEY,
+                       ConfigConstants.DEFAULT_TASK_MANAGER_DATA_PORT);
+
+               checkConfigParameter(dataport > 0, dataport, 
ConfigConstants.TASK_MANAGER_DATA_PORT_KEY,
+                       "Leave config parameter empty or use 0 to let the 
system choose a port automatically.");
+
+               InetAddress taskManagerAddress = 
InetAddress.getByName(taskManagerHostname);
+               final InetSocketAddress taskManagerInetSocketAddress = new 
InetSocketAddress(taskManagerAddress, dataport);
+
+               // ----> memory / network stack (shuffles/broadcasts), task 
slots, temp directories
+
+               // we need this because many configs have been written with a 
"-1" entry
+               int slots = 
configuration.getInteger(ConfigConstants.TASK_MANAGER_NUM_TASK_SLOTS, 1);
+               if (slots == -1) {
+                       slots = 1;
+               }
+
+               checkConfigParameter(slots >= 1, slots, 
ConfigConstants.TASK_MANAGER_NUM_TASK_SLOTS,
+                       "Number of task slots must be at least one.");
+
+               final int numNetworkBuffers = configuration.getInteger(
+                       ConfigConstants.TASK_MANAGER_NETWORK_NUM_BUFFERS_KEY,
+                       
ConfigConstants.DEFAULT_TASK_MANAGER_NETWORK_NUM_BUFFERS);
+
+               checkConfigParameter(numNetworkBuffers > 0, numNetworkBuffers,
+                       ConfigConstants.TASK_MANAGER_NETWORK_NUM_BUFFERS_KEY, 
"");
+
+               final int pageSize = configuration.getInteger(
+                       ConfigConstants.TASK_MANAGER_MEMORY_SEGMENT_SIZE_KEY,
+                       
ConfigConstants.DEFAULT_TASK_MANAGER_MEMORY_SEGMENT_SIZE);
+
+               // check page size of for minimum size
+               checkConfigParameter(pageSize >= MemoryManager.MIN_PAGE_SIZE, 
pageSize,
+                       ConfigConstants.TASK_MANAGER_MEMORY_SEGMENT_SIZE_KEY,
+                       "Minimum memory segment size is " + 
MemoryManager.MIN_PAGE_SIZE);
+
+               // check page size for power of two
+               checkConfigParameter(MathUtils.isPowerOf2(pageSize), pageSize,
+                       ConfigConstants.TASK_MANAGER_MEMORY_SEGMENT_SIZE_KEY,
+                       "Memory segment size must be a power of 2.");
+
+               // check whether we use heap or off-heap memory
+               final MemoryType memType;
+               if 
(configuration.getBoolean(ConfigConstants.TASK_MANAGER_MEMORY_OFF_HEAP_KEY, 
false)) {
+                       memType = MemoryType.OFF_HEAP;
+               } else {
+                       memType = MemoryType.HEAP;
+               }
+
+               // initialize the memory segment factory accordingly
+               if (memType == MemoryType.HEAP) {
+                       if 
(!MemorySegmentFactory.initializeIfNotInitialized(HeapMemorySegment.FACTORY)) {
+                               throw new Exception("Memory type is set to heap 
memory, but memory segment " +
+                                       "factory has been initialized for 
off-heap memory segments");
+                       }
+               } else {
+                       if 
(!MemorySegmentFactory.initializeIfNotInitialized(HybridMemorySegment.FACTORY)) 
{
+                               throw new Exception("Memory type is set to 
off-heap memory, but memory segment " +
+                                       "factory has been initialized for heap 
memory segments");
+                       }
+               }
+
+               final String[] tmpDirs = configuration.getString(
+                       ConfigConstants.TASK_MANAGER_TMP_DIR_KEY,
+                       
ConfigConstants.DEFAULT_TASK_MANAGER_TMP_PATH).split(",|" + File.pathSeparator);
+
+               final NettyConfig nettyConfig;
+               if (!localTaskManagerCommunication) {
+                       nettyConfig = new 
NettyConfig(taskManagerInetSocketAddress.getAddress(),
+                               taskManagerInetSocketAddress.getPort(), 
pageSize, slots, configuration);
+               } else {
+                       nettyConfig = null;
+               }
+
+               // Default spill I/O mode for intermediate results
+               final String syncOrAsync = configuration.getString(
+                       ConfigConstants.TASK_MANAGER_NETWORK_DEFAULT_IO_MODE,
+                       
ConfigConstants.DEFAULT_TASK_MANAGER_NETWORK_DEFAULT_IO_MODE);
+
+               final IOManager.IOMode ioMode;
+               if (syncOrAsync.equals("async")) {
+                       ioMode = IOManager.IOMode.ASYNC;
+               } else {
+                       ioMode = IOManager.IOMode.SYNC;
+               }
+
+               final int queryServerPort =  configuration.getInteger(
+                       ConfigConstants.QUERYABLE_STATE_SERVER_PORT,
+                       ConfigConstants.DEFAULT_QUERYABLE_STATE_SERVER_PORT);
+
+               final int queryServerNetworkThreads =  configuration.getInteger(
+                       ConfigConstants.QUERYABLE_STATE_SERVER_NETWORK_THREADS,
+                       
ConfigConstants.DEFAULT_QUERYABLE_STATE_SERVER_NETWORK_THREADS);
+
+               final int queryServerQueryThreads =  configuration.getInteger(
+                       ConfigConstants.QUERYABLE_STATE_SERVER_QUERY_THREADS,
+                       
ConfigConstants.DEFAULT_QUERYABLE_STATE_SERVER_QUERY_THREADS);
+
+               final NetworkEnvironmentConfiguration networkConfig = new 
NetworkEnvironmentConfiguration(
+                       numNetworkBuffers,
+                       pageSize,
+                       memType,
+                       ioMode,
+                       queryServerPort,
+                       queryServerNetworkThreads,
+                       queryServerQueryThreads,
+                       Option.apply(nettyConfig),
+                       500,
+                       3000);
+
+               // ----> timeouts, library caching, profiling
+
+               final FiniteDuration timeout;
+               try {
+                       timeout = AkkaUtils.getTimeout(configuration);
+               } catch (Exception e) {
+                       throw new IllegalArgumentException(
+                               "Invalid format for '" + 
ConfigConstants.AKKA_ASK_TIMEOUT +
+                                       "'.Use formats like '50 s' or '1 min' 
to specify the timeout.");
+               }
+               LOG.info("Messages between TaskManager and JobManager have a 
max timeout of " + timeout);
+
+               final long cleanupInterval = configuration.getLong(
+                       ConfigConstants.LIBRARY_CACHE_MANAGER_CLEANUP_INTERVAL,
+                       
ConfigConstants.DEFAULT_LIBRARY_CACHE_MANAGER_CLEANUP_INTERVAL) * 1000;
+
+               final FiniteDuration finiteRegistrationDuration;
+               try {
+                       Duration maxRegistrationDuration = 
Duration.create(configuration.getString(
+                               
ConfigConstants.TASK_MANAGER_MAX_REGISTRATION_DURATION,
+                               
ConfigConstants.DEFAULT_TASK_MANAGER_MAX_REGISTRATION_DURATION));
+                       if (maxRegistrationDuration.isFinite()) {
+                               finiteRegistrationDuration = new 
FiniteDuration(maxRegistrationDuration.toSeconds(), TimeUnit.SECONDS);
+                       } else {
+                               finiteRegistrationDuration = null;
+                       }
+               } catch (NumberFormatException e) {
+                       throw new IllegalArgumentException("Invalid format for 
parameter " +
+                               
ConfigConstants.TASK_MANAGER_MAX_REGISTRATION_DURATION, e);
+               }
+
+               final FiniteDuration initialRegistrationPause;
+               try {
+                       Duration pause = 
Duration.create(configuration.getString(
+                               
ConfigConstants.TASK_MANAGER_INITIAL_REGISTRATION_PAUSE,
+                               
ConfigConstants.DEFAULT_TASK_MANAGER_INITIAL_REGISTRATION_PAUSE));
+                       if (pause.isFinite()) {
+                               initialRegistrationPause = new 
FiniteDuration(pause.toSeconds(), TimeUnit.SECONDS);
+                       } else {
+                               throw new IllegalArgumentException("The initial 
registration pause must be finite: " + pause);
+                       }
+               } catch (NumberFormatException e) {
+                       throw new IllegalArgumentException("Invalid format for 
parameter " +
+                               
ConfigConstants.TASK_MANAGER_INITIAL_REGISTRATION_PAUSE, e);
+               }
+
+               final FiniteDuration maxRegistrationPause;
+               try {
+                       Duration pause = 
Duration.create(configuration.getString(
+                               
ConfigConstants.TASK_MANAGER_MAX_REGISTARTION_PAUSE,
+                               
ConfigConstants.DEFAULT_TASK_MANAGER_MAX_REGISTRATION_PAUSE));
+                       if (pause.isFinite()) {
+                               maxRegistrationPause = new 
FiniteDuration(pause.toSeconds(), TimeUnit.SECONDS);
+                       } else {
+                               throw new IllegalArgumentException("The maximum 
registration pause must be finite: " + pause);
+                       }
+               } catch (NumberFormatException e) {
+                       throw new IllegalArgumentException("Invalid format for 
parameter " +
+                               
ConfigConstants.TASK_MANAGER_INITIAL_REGISTRATION_PAUSE, e);
+               }
+
+               final FiniteDuration refusedRegistrationPause;
+               try {
+                       Duration pause = 
Duration.create(configuration.getString(
+                               
ConfigConstants.TASK_MANAGER_REFUSED_REGISTRATION_PAUSE,
+                               
ConfigConstants.DEFAULT_TASK_MANAGER_REFUSED_REGISTRATION_PAUSE));
+                       if (pause.isFinite()) {
+                               refusedRegistrationPause = new 
FiniteDuration(pause.toSeconds(), TimeUnit.SECONDS);
+                       } else {
+                               throw new IllegalArgumentException("The refused 
registration pause must be finite: " + pause);
+                       }
+               } catch (NumberFormatException e) {
+                       throw new IllegalArgumentException("Invalid format for 
parameter " +
+                               
ConfigConstants.TASK_MANAGER_INITIAL_REGISTRATION_PAUSE, e);
+               }
+
+               return new TaskExecutorConfiguration(
+                       tmpDirs,
+                       cleanupInterval,
+                       networkConfig,
+                       timeout,
+                       finiteRegistrationDuration,
+                       slots,
+                       configuration,
+                       initialRegistrationPause,
+                       maxRegistrationPause,
+                       refusedRegistrationPause);
+       }
+
+       /**
+        * Validates a condition for a config parameter and displays a standard 
exception, if the
+        * the condition does not hold.
+        *
+        * @param condition             The condition that must hold. If the 
condition is false, an exception is thrown.
+        * @param parameter         The parameter value. Will be shown in the 
exception message.
+        * @param name              The name of the config parameter. Will be 
shown in the exception message.
+        * @param errorMessage  The optional custom error message to append to 
the exception message.
+        */
+       private static void checkConfigParameter(
+               boolean condition,
+               Object parameter,
+               String name,
+               String errorMessage) {
+               if (!condition) {
+                       throw new IllegalConfigurationException("Invalid 
configuration value for " + name + " : " + parameter + " - " + errorMessage);
+               }
+       }
+
+       /**
+        * Validates that all the directories denoted by the strings do 
actually exist, are proper
+        * directories (not files), and are writable.
+        *
+        * @param tmpDirs       The array of directory paths to check.
+        * @throws Exception    Thrown if any of the directories does not exist 
or is not writable
+        *                   or is a file, rather than a directory.
+        */
+       private static void checkTempDirs(String[] tmpDirs) throws IOException {
+               for (String dir : tmpDirs) {
+                       if (dir != null && !dir.equals("")) {
+                               File file = new File(dir);
+                               if (!file.exists()) {
+                                       throw new IOException("Temporary file 
directory " + file.getAbsolutePath() + " does not exist.");
+                               }
+                               if (!file.isDirectory()) {
+                                       throw new IOException("Temporary file 
directory " + file.getAbsolutePath() + " is not a directory.");
+                               }
+                               if (!file.canWrite()) {
+                                       throw new IOException("Temporary file 
directory " + file.getAbsolutePath() + " is not writable.");
+                               }
+
+                               if (LOG.isInfoEnabled()) {
+                                       long totalSpaceGb = 
file.getTotalSpace() >> 30;
+                                       long usableSpaceGb = 
file.getUsableSpace() >> 30;
+                                       double usablePercentage = 
(double)usableSpaceGb / totalSpaceGb * 100;
+                                       String path = file.getAbsolutePath();
+                                       LOG.info(String.format("Temporary file 
directory '%s': total %d GB, " + "usable %d GB (%.2f%% usable)",
+                                               path, totalSpaceGb, 
usableSpaceGb, usablePercentage));
+                               }
+                       } else {
+                               throw new IllegalArgumentException("Temporary 
file directory #$id is null.");
+                       }
+               }
+       }
+
+       private static class TaskManagerComponents {
+               private final TaskManagerLocation taskManagerLocation;
+               private final MemoryManager memoryManager;
+               private final IOManager ioManager;
+               private final NetworkEnvironment networkEnvironment;
+
+               private TaskManagerComponents(
+                       TaskManagerLocation taskManagerLocation,
+                       MemoryManager memoryManager,
+                       IOManager ioManager,
+                       NetworkEnvironment networkEnvironment) {
+
+                       this.taskManagerLocation = 
Preconditions.checkNotNull(taskManagerLocation);
+                       this.memoryManager = 
Preconditions.checkNotNull(memoryManager);
+                       this.ioManager = Preconditions.checkNotNull(ioManager);
+                       this.networkEnvironment = 
Preconditions.checkNotNull(networkEnvironment);
+               }
+
+               public MemoryManager getMemoryManager() {
+                       return memoryManager;
+               }
+
+               public IOManager getIOManager() {
+                       return ioManager;
+               }
+
+               public NetworkEnvironment getNetworkEnvironment() {
+                       return networkEnvironment;
+               }
+
+               public TaskManagerLocation getTaskManagerLocation() {
+                       return taskManagerLocation;
+               }
+       }
+}

http://git-wip-us.apache.org/repos/asf/flink/blob/c34f13c2/flink-runtime/src/test/java/org/apache/flink/runtime/taskexecutor/TaskExecutorTest.java
----------------------------------------------------------------------
diff --git 
a/flink-runtime/src/test/java/org/apache/flink/runtime/taskexecutor/TaskExecutorTest.java
 
b/flink-runtime/src/test/java/org/apache/flink/runtime/taskexecutor/TaskExecutorTest.java
index 09aab18..26218dd 100644
--- 
a/flink-runtime/src/test/java/org/apache/flink/runtime/taskexecutor/TaskExecutorTest.java
+++ 
b/flink-runtime/src/test/java/org/apache/flink/runtime/taskexecutor/TaskExecutorTest.java
@@ -19,17 +19,22 @@
 package org.apache.flink.runtime.taskexecutor;
 
 import org.apache.flink.api.common.time.Time;
-import org.apache.flink.configuration.Configuration;
 import org.apache.flink.runtime.clusterframework.types.ResourceID;
 import org.apache.flink.runtime.highavailability.NonHaServices;
 import 
org.apache.flink.runtime.highavailability.TestingHighAvailabilityServices;
+import org.apache.flink.runtime.io.disk.iomanager.IOManager;
+import org.apache.flink.runtime.io.network.NetworkEnvironment;
 import org.apache.flink.runtime.leaderelection.TestingLeaderRetrievalService;
+import org.apache.flink.runtime.memory.MemoryManager;
 import org.apache.flink.runtime.rpc.TestingRpcService;
 import org.apache.flink.runtime.resourcemanager.ResourceManagerGateway;
+import org.apache.flink.runtime.rpc.TestingSerialRpcService;
+import org.apache.flink.runtime.taskmanager.TaskManagerLocation;
 import org.apache.flink.util.TestLogger;
 
 import org.junit.Test;
 
+import org.powermock.api.mockito.PowerMockito;
 import java.util.UUID;
 
 import static org.junit.Assert.*;
@@ -42,19 +47,31 @@ public class TaskExecutorTest extends TestLogger {
                final ResourceID resourceID = ResourceID.generate();
                final String resourceManagerAddress = 
"/resource/manager/address/one";
 
-               final TestingRpcService rpc = new TestingRpcService();
+               final TestingSerialRpcService rpc = new 
TestingSerialRpcService();
                try {
                        // register a mock resource manager gateway
                        ResourceManagerGateway rmGateway = 
mock(ResourceManagerGateway.class);
+                       TaskExecutorConfiguration taskExecutorConfiguration = 
mock(TaskExecutorConfiguration.class);
+                       
PowerMockito.when(taskExecutorConfiguration.getNumberOfSlots()).thenReturn(1);
                        rpc.registerGateway(resourceManagerAddress, rmGateway);
 
+                       TaskManagerLocation taskManagerLocation = 
mock(TaskManagerLocation.class);
+                       
when(taskManagerLocation.getResourceID()).thenReturn(resourceID);
+
                        NonHaServices haServices = new 
NonHaServices(resourceManagerAddress);
-                       TaskExecutor taskManager = 
TaskExecutor.startTaskManagerComponentsAndActor(
-                               new Configuration(), resourceID, rpc, 
"localhost", haServices, true);
-                       String taskManagerAddress = taskManager.getAddress();
+
+                       TaskExecutor taskManager = new TaskExecutor(
+                               taskExecutorConfiguration,
+                               taskManagerLocation,
+                               rpc, mock(MemoryManager.class),
+                               mock(IOManager.class),
+                               mock(NetworkEnvironment.class),
+                               haServices);
+
                        taskManager.start();
+                       String taskManagerAddress = taskManager.getAddress();
 
-                       verify(rmGateway, timeout(5000)).registerTaskExecutor(
+                       verify(rmGateway).registerTaskExecutor(
                                        any(UUID.class), 
eq(taskManagerAddress), eq(resourceID), any(Time.class));
                }
                finally {
@@ -71,7 +88,7 @@ public class TaskExecutorTest extends TestLogger {
                final UUID leaderId1 = UUID.randomUUID();
                final UUID leaderId2 = UUID.randomUUID();
 
-               final TestingRpcService rpc = new TestingRpcService();
+               final TestingSerialRpcService rpc = new 
TestingSerialRpcService();
                try {
                        // register the mock resource manager gateways
                        ResourceManagerGateway rmGateway1 = 
mock(ResourceManagerGateway.class);
@@ -84,10 +101,22 @@ public class TaskExecutorTest extends TestLogger {
                        TestingHighAvailabilityServices haServices = new 
TestingHighAvailabilityServices();
                        
haServices.setResourceManagerLeaderRetriever(testLeaderService);
 
-                       TaskExecutor taskManager = 
TaskExecutor.startTaskManagerComponentsAndActor(
-                               new Configuration(), resourceID, rpc, 
"localhost", haServices, true);
-                       String taskManagerAddress = taskManager.getAddress();
+                       TaskExecutorConfiguration taskExecutorConfiguration = 
mock(TaskExecutorConfiguration.class);
+                       
PowerMockito.when(taskExecutorConfiguration.getNumberOfSlots()).thenReturn(1);
+
+                       TaskManagerLocation taskManagerLocation = 
mock(TaskManagerLocation.class);
+                       
when(taskManagerLocation.getResourceID()).thenReturn(resourceID);
+
+                       TaskExecutor taskManager = new TaskExecutor(
+                               taskExecutorConfiguration,
+                               taskManagerLocation,
+                               rpc, mock(MemoryManager.class),
+                               mock(IOManager.class),
+                               mock(NetworkEnvironment.class),
+                               haServices);
+
                        taskManager.start();
+                       String taskManagerAddress = taskManager.getAddress();
 
                        // no connection initially, since there is no leader
                        assertNull(taskManager.getResourceManagerConnection());
@@ -95,7 +124,7 @@ public class TaskExecutorTest extends TestLogger {
                        // define a leader and see that a registration happens
                        testLeaderService.notifyListener(address1, leaderId1);
 
-                       verify(rmGateway1, timeout(5000)).registerTaskExecutor(
+                       verify(rmGateway1).registerTaskExecutor(
                                        eq(leaderId1), eq(taskManagerAddress), 
eq(resourceID), any(Time.class));
                        
assertNotNull(taskManager.getResourceManagerConnection());
 
@@ -105,7 +134,7 @@ public class TaskExecutorTest extends TestLogger {
                        // set a new leader, see that a registration happens 
                        testLeaderService.notifyListener(address2, leaderId2);
 
-                       verify(rmGateway2, timeout(5000)).registerTaskExecutor(
+                       verify(rmGateway2).registerTaskExecutor(
                                        eq(leaderId2), eq(taskManagerAddress), 
eq(resourceID), any(Time.class));
                        
assertNotNull(taskManager.getResourceManagerConnection());
                }

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