Github user tillrohrmann commented on a diff in the pull request:
https://github.com/apache/flink/pull/2315#discussion_r74950002
--- Diff:
flink-mesos/src/main/java/org/apache/flink/mesos/runtime/clusterframework/MesosApplicationMasterRunner.java
---
@@ -0,0 +1,618 @@
+/*
+ * 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.mesos.runtime.clusterframework;
+
+import akka.actor.ActorRef;
+import akka.actor.ActorSystem;
+import akka.actor.Props;
+
+import org.apache.curator.framework.CuratorFramework;
+import org.apache.flink.configuration.ConfigConstants;
+import org.apache.flink.configuration.Configuration;
+import org.apache.flink.configuration.GlobalConfiguration;
+import org.apache.flink.configuration.IllegalConfigurationException;
+import org.apache.flink.mesos.cli.FlinkMesosSessionCli;
+import
org.apache.flink.mesos.runtime.clusterframework.store.MesosWorkerStore;
+import
org.apache.flink.mesos.runtime.clusterframework.store.StandaloneMesosWorkerStore;
+import
org.apache.flink.mesos.runtime.clusterframework.store.ZooKeeperMesosWorkerStore;
+import org.apache.flink.mesos.util.MesosArtifactServer;
+import org.apache.flink.mesos.util.MesosConfiguration;
+import org.apache.flink.mesos.util.ZooKeeperUtils;
+import org.apache.flink.runtime.akka.AkkaUtils;
+import org.apache.flink.runtime.clusterframework.BootstrapTools;
+import
org.apache.flink.runtime.clusterframework.ContaineredTaskManagerParameters;
+import org.apache.flink.runtime.jobmanager.JobManager;
+import org.apache.flink.runtime.jobmanager.MemoryArchivist;
+import org.apache.flink.runtime.jobmanager.RecoveryMode;
+import org.apache.flink.runtime.leaderretrieval.LeaderRetrievalService;
+import org.apache.flink.runtime.process.ProcessReaper;
+import org.apache.flink.runtime.taskmanager.TaskManager;
+import org.apache.flink.runtime.util.EnvironmentInformation;
+import org.apache.flink.runtime.util.LeaderRetrievalUtils;
+import org.apache.flink.runtime.util.SignalHandler;
+import org.apache.flink.runtime.webmonitor.WebMonitor;
+
+import org.apache.hadoop.security.UserGroupInformation;
+
+import org.apache.mesos.Protos;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import scala.Option;
+import scala.concurrent.duration.Duration;
+import scala.concurrent.duration.FiniteDuration;
+
+import java.io.File;
+import java.net.InetAddress;
+import java.net.URL;
+import java.security.PrivilegedAction;
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.TimeUnit;
+
+import static org.apache.flink.mesos.Utils.uri;
+import static org.apache.flink.mesos.Utils.variable;
+
+/**
+ * This class is the executable entry point for the Mesos Application
Master.
+ * It starts actor system and the actors for {@link
org.apache.flink.runtime.jobmanager.JobManager}
+ * and {@link MesosFlinkResourceManager}.
+ *
+ * The JobManager handles Flink job execution, while the
MesosFlinkResourceManager handles container
+ * allocation and failure detection.
+ */
+public class MesosApplicationMasterRunner {
+ /** Logger */
+ protected static final Logger LOG =
LoggerFactory.getLogger(MesosApplicationMasterRunner.class);
+
+ /** The maximum time that TaskManagers may be waiting to register at
the JobManager,
+ * before they quit */
+ private static final FiniteDuration TASKMANAGER_REGISTRATION_TIMEOUT =
new FiniteDuration(5, TimeUnit.MINUTES);
+
+ /** The process environment variables */
+ private static final Map<String, String> ENV = System.getenv();
+
+ /** The exit code returned if the initialization of the application
master failed */
+ private static final int INIT_ERROR_EXIT_CODE = 31;
+
+ /** The exit code returned if the process exits because a critical
actor died */
+ private static final int ACTOR_DIED_EXIT_CODE = 32;
+
+ //
------------------------------------------------------------------------
+ // Program entry point
+ //
------------------------------------------------------------------------
+
+ /**
+ * The entry point for the Mesos AppMaster.
+ *
+ * @param args The command line arguments.
+ */
+ public static void main(String[] args) {
+ EnvironmentInformation.logEnvironmentInfo(LOG, "Mesos
AppMaster", args);
+ SignalHandler.register(LOG);
+
+ // run and exit with the proper return code
+ int returnCode = new MesosApplicationMasterRunner().run(args);
+ System.exit(returnCode);
+ }
+
+ /**
+ * The instance entry point for the Mesos AppMaster. Obtains user group
+ * information and calls the main work method {@link #runPrivileged()}
as a
+ * privileged action.
+ *
+ * @param args The command line arguments.
+ * @return The process exit code.
+ */
+ protected int run(String[] args) {
+ try {
+ LOG.debug("All environment variables: {}", ENV);
+
+ final UserGroupInformation currentUser;
+ try {
+ currentUser =
UserGroupInformation.getCurrentUser();
+ } catch (Throwable t) {
+ throw new Exception("Cannot access
UserGroupInformation information for current user", t);
+ }
+
+ LOG.info("Running Flink as user {}",
currentUser.getShortUserName());
+
+ // run the actual work in a secured privileged action
+ return currentUser.doAs(new PrivilegedAction<Integer>()
{
+ @Override
+ public Integer run() {
+ return runPrivileged();
+ }
+ });
+ }
+ catch (Throwable t) {
+ // make sure that everything whatever ends up in the log
+ LOG.error("Mesos AppMaster initialization failed", t);
+ return INIT_ERROR_EXIT_CODE;
+ }
+ }
+
+ //
------------------------------------------------------------------------
+ // Core work method
+ //
------------------------------------------------------------------------
+
+ /**
+ * The main work method, must run as a privileged action.
+ *
+ * @return The return code for the Java process.
+ */
+ protected int runPrivileged() {
+
+ ActorSystem actorSystem = null;
+ WebMonitor webMonitor = null;
+ MesosArtifactServer artifactServer = null;
+
+ try {
+ // ------- (1) load and parse / validate all
configurations -------
+
+ // loading all config values here has the advantage
that the program fails fast, if any
+ // configuration problem occurs
+
+ final String workingDir =
ENV.get(MesosConfigKeys.ENV_MESOS_SANDBOX);
+ require(workingDir != null, "Sandbox directory variable
(%s) not set", MesosConfigKeys.ENV_MESOS_SANDBOX);
+
+ final String sessionID =
ENV.get(MesosConfigKeys.ENV_SESSION_ID);
+ require(sessionID != null, "Session ID (%s) not set",
MesosConfigKeys.ENV_SESSION_ID);
+
+ // Note that we use the "appMasterHostname" given by
the system, to make sure
+ // we use the hostnames consistently throughout akka.
+ // for akka "localhost" and "localhost.localdomain" are
different actors.
+ final String appMasterHostname =
InetAddress.getLocalHost().getHostName();
+
+ // Flink configuration
+ final Configuration dynamicProperties =
+
FlinkMesosSessionCli.decodeDynamicProperties(ENV.get(MesosConfigKeys.ENV_DYNAMIC_PROPERTIES));
+ LOG.debug("Mesos dynamic properties: {}",
dynamicProperties);
+
+ final Configuration config =
createConfiguration(workingDir, dynamicProperties);
+
+ // Mesos configuration
+ final MesosConfiguration mesosConfig =
createMesosConfig(config, appMasterHostname);
+
+ // environment values related to TM
+ final int taskManagerContainerMemory;
+ final int numInitialTaskManagers;
+ final int slotsPerTaskManager;
+
+ try {
+ taskManagerContainerMemory =
Integer.parseInt(ENV.get(MesosConfigKeys.ENV_TM_MEMORY));
+ } catch (NumberFormatException e) {
+ throw new RuntimeException("Invalid value for "
+ MesosConfigKeys.ENV_TM_MEMORY + " : "
+ + e.getMessage());
+ }
+ try {
+ numInitialTaskManagers =
Integer.parseInt(ENV.get(MesosConfigKeys.ENV_TM_COUNT));
+ } catch (NumberFormatException e) {
+ throw new RuntimeException("Invalid value for "
+ MesosConfigKeys.ENV_TM_COUNT + " : "
+ + e.getMessage());
+ }
+ try {
+ slotsPerTaskManager =
Integer.parseInt(ENV.get(MesosConfigKeys.ENV_SLOTS));
+ } catch (NumberFormatException e) {
+ throw new RuntimeException("Invalid value for "
+ MesosConfigKeys.ENV_SLOTS + " : "
+ + e.getMessage());
+ }
+
+ final ContaineredTaskManagerParameters
containeredParameters =
+ ContaineredTaskManagerParameters.create(config,
taskManagerContainerMemory, slotsPerTaskManager);
+
+ final MesosTaskManagerParameters taskManagerParameters =
+ MesosTaskManagerParameters.create(config,
containeredParameters);
+
+ LOG.info("TaskManagers will be created with {} task
slots",
+
taskManagerParameters.containeredParameters().numSlots());
+ LOG.info("TaskManagers will be started with container
size {} MB, JVM heap size {} MB, " +
+ "JVM direct memory limit {} MB, {}
cpus",
+
taskManagerParameters.containeredParameters().taskManagerTotalMemoryMB(),
+
taskManagerParameters.containeredParameters().taskManagerHeapSizeMB(),
+
taskManagerParameters.containeredParameters().taskManagerDirectMemoryLimitMB(),
+ taskManagerParameters.cpus());
+
+ // JM endpoint, which should be explicitly configured
by the dispatcher (based on acquired net resources)
+ final int listeningPort =
config.getInteger(ConfigConstants.JOB_MANAGER_IPC_PORT_KEY,
+ ConfigConstants.DEFAULT_JOB_MANAGER_IPC_PORT);
+ require(listeningPort >= 0 && listeningPort <= 65536,
"Config parameter \"" +
+ ConfigConstants.JOB_MANAGER_IPC_PORT_KEY + "\"
is invalid, it must be between 0 and 65536");
+
+ // ----------------- (2) start the actor system
-------------------
+
+ // try to start the actor system, JobManager and
JobManager actor system
+ // using the configured address and ports
+ actorSystem = BootstrapTools.startActorSystem(config,
appMasterHostname, listeningPort, LOG);
+
+ final String akkaHostname =
AkkaUtils.getAddress(actorSystem).host().get();
+ final int akkaPort = (Integer)
AkkaUtils.getAddress(actorSystem).port().get();
+
+ LOG.info("Actor system bound to hostname {}.",
akkaHostname);
+
+ // try to start the artifact server
+ LOG.debug("Starting Artifact Server");
+ final int artifactServerPort =
config.getInteger(ConfigConstants.MESOS_ARTIFACT_SERVER_PORT_KEY,
+
ConfigConstants.DEFAULT_MESOS_ARTIFACT_SERVER_PORT);
+ artifactServer = new MesosArtifactServer(sessionID,
akkaHostname, artifactServerPort);
+
+ // ----------------- (3) Generate the configuration for
the TaskManagers -------------------
+
+ final Configuration taskManagerConfig =
BootstrapTools.generateTaskManagerConfiguration(
+ config, akkaHostname, akkaPort,
slotsPerTaskManager, TASKMANAGER_REGISTRATION_TIMEOUT);
+ LOG.debug("TaskManager configuration: {}",
taskManagerConfig);
+
+ final Protos.TaskInfo.Builder taskManagerContext =
createTaskManagerContext(
+ config, mesosConfig, ENV,
+ taskManagerParameters, taskManagerConfig,
+ workingDir, getTaskManagerClass(),
artifactServer, LOG);
+
+ // ----------------- (4) start the actors
-------------------
+
+ // 1) JobManager & Archive (in non-HA case, the leader
service takes this)
+ // 2) Web Monitor (we need its port to register)
+ // 3) Resource Master for Mesos
+ // 4) Process reapers for the JobManager and Resource
Master
+
+ // 1: the JobManager
+ LOG.debug("Starting JobManager actor");
+
+ // we start the JobManager with its standard name
+ ActorRef jobManager = JobManager.startJobManagerActors(
+ config, actorSystem,
+ new scala.Some<>(JobManager.JOB_MANAGER_NAME()),
+ scala.Option.<String>empty(),
+ getJobManagerClass(),
+ getArchivistClass())._1();
+
+
+ // 2: the web monitor
+ LOG.debug("Starting Web Frontend");
+
+ webMonitor =
BootstrapTools.startWebMonitorIfConfigured(config, actorSystem, jobManager,
LOG);
+ if(webMonitor != null) {
+ final URL webMonitorURL = new URL("http",
appMasterHostname, webMonitor.getServerPort(), "/");
+
mesosConfig.frameworkInfo().setWebuiUrl(webMonitorURL.toExternalForm());
+ }
+
+ // 3: Flink's Mesos ResourceManager
+ LOG.debug("Starting Mesos Flink Resource Manager");
+
+ // create the worker store to persist task information
across restarts
+ MesosWorkerStore workerStore =
createWorkerStore(config);
+
+ // we need the leader retrieval service here to be
informed of new
+ // leader session IDs, even though there can be only
one leader ever
+ LeaderRetrievalService leaderRetriever =
+
LeaderRetrievalUtils.createLeaderRetrievalService(config, jobManager);
+
+ Props resourceMasterProps =
MesosFlinkResourceManager.createActorProps(
+ getResourceManagerClass(),
+ config,
+ mesosConfig,
+ workerStore,
+ leaderRetriever,
+ taskManagerParameters,
+ taskManagerContext,
+ numInitialTaskManagers,
+ LOG);
+
+ ActorRef resourceMaster =
actorSystem.actorOf(resourceMasterProps, "Mesos_Resource_Master");
+
+
+ // 4: Process reapers
+ // The process reapers ensure that upon unexpected
actor death, the process exits
+ // and does not stay lingering around unresponsive
+
+ LOG.debug("Starting process reapers for JobManager");
+
+ actorSystem.actorOf(
+ Props.create(ProcessReaper.class,
resourceMaster, LOG, ACTOR_DIED_EXIT_CODE),
+ "Mesos_Resource_Master_Process_Reaper");
+
+ actorSystem.actorOf(
+ Props.create(ProcessReaper.class, jobManager,
LOG, ACTOR_DIED_EXIT_CODE),
+ "JobManager_Process_Reaper");
+ }
+ catch (Throwable t) {
+ // make sure that everything whatever ends up in the log
+ LOG.error("Mesos JobManager initialization failed", t);
+
+ if (actorSystem != null) {
+ try {
+ actorSystem.shutdown();
+ } catch (Throwable tt) {
+ LOG.error("Error shutting down actor
system", tt);
+ }
+ }
+
+ if (webMonitor != null) {
+ try {
+ webMonitor.stop();
+ } catch (Throwable ignored) {
+ LOG.warn("Failed to stop the web
frontend", ignored);
+ }
+ }
+
+ if(artifactServer != null) {
+ try {
+ artifactServer.stop();
+ } catch (Throwable ignored) {
+ LOG.error("Failed to stop the artifact
server", ignored);
+ }
+ }
+
+ return INIT_ERROR_EXIT_CODE;
+ }
+
+ // everything started, we can wait until all is done or the
process is killed
+ LOG.info("Mesos JobManager started");
+
+ // wait until everything is done
+ actorSystem.awaitTermination();
+
+ // if we get here, everything work out jolly all right, and we
even exited smoothly
+ if (webMonitor != null) {
+ try {
+ webMonitor.stop();
+ } catch (Throwable t) {
+ LOG.error("Failed to stop the web frontend", t);
+ }
+ }
+
+ try {
+ artifactServer.stop();
+ } catch (Throwable t) {
+ LOG.error("Failed to stop the artifact server", t);
+ }
+
+ return 0;
+ }
+
+ //
------------------------------------------------------------------------
+ // For testing, this allows to override the actor classes used for
+ // JobManager and the archive of completed jobs
+ //
------------------------------------------------------------------------
+
+ protected Class<? extends MesosFlinkResourceManager>
getResourceManagerClass() {
+ return MesosFlinkResourceManager.class;
+ }
+
+ protected Class<? extends JobManager> getJobManagerClass() {
+ return MesosJobManager.class;
+ }
+
+ protected Class<? extends MemoryArchivist> getArchivistClass() {
+ return MemoryArchivist.class;
+ }
+
+ protected Class<? extends TaskManager> getTaskManagerClass() {
+ return MesosTaskManager.class;
+ }
+
+ /**
+ * Validates a condition, throwing a RuntimeException if the condition
is violated.
+ *
+ * @param condition The condition.
+ * @param message The message for the runtime exception, with format
variables as defined by
+ * {@link String#format(String, Object...)}.
+ * @param values The format arguments.
+ */
+ private static void require(boolean condition, String message,
Object... values) {
+ if (!condition) {
+ throw new RuntimeException(String.format(message,
values));
+ }
+ }
+
+ /**
+ *
+ * @param baseDirectory
+ * @param additional
+ *
+ * @return The configuration to be used by the TaskManagers.
+ */
+ @SuppressWarnings("deprecation")
+ private static Configuration createConfiguration(String baseDirectory,
Configuration additional) {
+ LOG.info("Loading config from directory " + baseDirectory);
--- End diff --
Use slf4j's `{}`-placeholder here.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
