Repository: incubator-reef
Updated Branches:
  refs/heads/master cd77ecc1c -> 44cea4921


[REEF-360] Fix violations / reconfigure checkstyle checks in "Blocks" category

This addressed the issue by
  * fixing LeftCurly and NeedBraces violations
  * fixing most AvoidNestedBlocks and EmptyBlock violations
  * configuring AvoidNestedBlocks to allow nested blocks in switch case
  * configuring EmptyBlock to allow blocks with comments only
  * allowing to configure per-case warning suppressions and suppressing 
AvoidNestedBlocks in org/apache/reef/util/MemoryUtils.java

JIRA:
  [REEF-360](https://issues.apache.org/jira/browse/REEF-360)

Pull Request:
  This closes #223


Project: http://git-wip-us.apache.org/repos/asf/incubator-reef/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-reef/commit/44cea492
Tree: http://git-wip-us.apache.org/repos/asf/incubator-reef/tree/44cea492
Diff: http://git-wip-us.apache.org/repos/asf/incubator-reef/diff/44cea492

Branch: refs/heads/master
Commit: 44cea4921d91a1cef18c9ac7b634a8f0077b4050
Parents: cd77ecc
Author: Mariia Mykhailova <[email protected]>
Authored: Fri Jun 12 13:19:33 2015 -0700
Committer: Brian Cho <[email protected]>
Committed: Wed Jun 17 09:48:36 2015 +0900

----------------------------------------------------------------------
 .../reef/javabridge/generic/JobDriver.java      |  3 +-
 .../util/logging/CLRBufferedLogHandler.java     |  9 +-
 .../src/main/java/org/apache/reef/io/Tuple.java | 16 +++-
 .../common/driver/DriverStatusManager.java      | 20 ++---
 .../common/driver/client/ClientManager.java     |  9 +-
 .../driver/context/ContextRepresenters.java     |  4 +-
 .../evaluator/EvaluatorMessageDispatcher.java   | 88 ++++++++++----------
 .../launch/REEFUncaughtExceptionHandler.java    |  4 +-
 .../common/utils/BroadCastEventHandler.java     |  3 +-
 .../java/org/apache/reef/util/MemoryUtils.java  | 11 ++-
 .../src/main/resources/checkstyle.xml           | 11 ++-
 .../examples/group/utils/math/VectorCodec.java  |  3 +-
 .../reef/examples/group/utils/math/Window.java  |  9 +-
 .../apache/reef/examples/pool/JobDriver.java    |  4 +-
 .../reef/examples/scheduler/TaskEntity.java     | 16 +++-
 .../impl/EvaluatorToPartitionMapper.java        |  3 +-
 .../io/data/loading/impl/NumberedSplit.java     |  9 +-
 .../reef/io/network/util/StringIdentifier.java  |  6 +-
 .../reef/io/storage/FramingOutputStream.java    |  4 +-
 .../reef/io/storage/ram/SortingRamSpool.java    |  3 +-
 .../reef/io/storage/util/GetAllIterable.java    |  3 +-
 .../reef/runtime/hdinsight/cli/TFileParser.java |  3 +-
 .../client/yarnrest/HDInsightInstance.java      |  1 +
 .../hdinsight/client/yarnrest/StringEntry.java  |  8 +-
 .../runtime/mesos/driver/REEFExecutors.java     |  4 +-
 .../yarn/client/YarnSubmissionHelper.java       | 28 +++----
 .../yarn/driver/YarnContainerManager.java       |  3 +-
 .../org/apache/reef/tang/InjectionFuture.java   |  4 +-
 .../implementation/java/ClassHierarchyImpl.java |  9 +-
 .../tang/implementation/types/AbstractNode.java |  8 +-
 .../types/ConstructorDefImpl.java               |  3 +-
 .../reef/tang/util/ReflectionUtilities.java     | 12 ++-
 .../java/org/apache/reef/tang/util/Tint.java    |  7 +-
 .../java/org/apache/reef/util/Optional.java     |  8 +-
 .../reef/wake/examples/join/BlockingJoin.java   |  4 +-
 .../reef/wake/examples/p2p/Pull2Push.java       |  2 -
 .../wake/impl/DefaultIdentifierFactory.java     |  3 +-
 .../reef/wake/impl/DefaultThreadFactory.java    |  9 +-
 .../reef/wake/impl/MultiEventHandler.java       |  3 +-
 .../apache/reef/wake/impl/ThreadPoolStage.java  |  3 +-
 .../org/apache/reef/wake/impl/TimerStage.java   |  4 +-
 .../wake/impl/WakeUncaughtExceptionHandler.java |  3 +-
 .../reef/wake/metrics/UniformHistogram.java     |  3 +-
 .../apache/reef/wake/profiler/WakeProfiler.java |  2 -
 .../reef/wake/remote/impl/MultiEncoder.java     |  5 +-
 .../remote/impl/OrderedRemoteReceiverStage.java |  6 +-
 .../wake/remote/impl/ProxyEventHandler.java     |  3 +-
 .../wake/remote/impl/RemoteEventComparator.java |  6 +-
 .../wake/remote/impl/RemoteEventEncoder.java    |  6 +-
 .../remote/impl/RemoteReceiverEventHandler.java |  3 +-
 .../remote/impl/RemoteSenderEventHandler.java   |  3 +-
 .../netty/NettyMessagingTransport.java          |  4 +-
 .../reef/wake/rx/impl/RxThreadPoolStage.java    |  3 +-
 .../reef/wake/rx/impl/TimeoutSubject.java       |  4 +-
 .../java/org/apache/reef/wake/time/Time.java    | 16 +++-
 .../reef/wake/time/runtime/LogicalTimer.java    |  4 +-
 .../reef/wake/time/runtime/RuntimeClock.java    |  9 +-
 57 files changed, 273 insertions(+), 171 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-bridge-java/src/main/java/org/apache/reef/javabridge/generic/JobDriver.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-bridge-java/src/main/java/org/apache/reef/javabridge/generic/JobDriver.java
 
b/lang/java/reef-bridge-java/src/main/java/org/apache/reef/javabridge/generic/JobDriver.java
index da75cb7..4bcc629 100644
--- 
a/lang/java/reef-bridge-java/src/main/java/org/apache/reef/javabridge/generic/JobDriver.java
+++ 
b/lang/java/reef-bridge-java/src/main/java/org/apache/reef/javabridge/generic/JobDriver.java
@@ -240,8 +240,9 @@ public final class JobDriver {
 
   private CLRBufferedLogHandler getCLRBufferedLogHandler() {
     for (Handler handler : Logger.getLogger("").getHandlers()) {
-      if (handler instanceof CLRBufferedLogHandler)
+      if (handler instanceof CLRBufferedLogHandler) {
         return (CLRBufferedLogHandler) handler;
+      }
     }
     return null;
   }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-bridge-java/src/main/java/org/apache/reef/util/logging/CLRBufferedLogHandler.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-bridge-java/src/main/java/org/apache/reef/util/logging/CLRBufferedLogHandler.java
 
b/lang/java/reef-bridge-java/src/main/java/org/apache/reef/util/logging/CLRBufferedLogHandler.java
index 14a9a1e..dacdd50 100644
--- 
a/lang/java/reef-bridge-java/src/main/java/org/apache/reef/util/logging/CLRBufferedLogHandler.java
+++ 
b/lang/java/reef-bridge-java/src/main/java/org/apache/reef/util/logging/CLRBufferedLogHandler.java
@@ -74,16 +74,19 @@ public class CLRBufferedLogHandler extends Handler {
    */
   @Override
   public void publish(LogRecord record) {
-    if (record == null)
+    if (record == null) {
       return;
+    }
 
-    if (!isLoggable(record))
+    if (!isLoggable(record)) {
       return;
+    }
 
     synchronized (this) {
       this.logs.add(record);
-      if (!this.driverInitialized || this.logs.size() < BUFFER_LEN)
+      if (!this.driverInitialized || this.logs.size() < BUFFER_LEN) {
         return;
+      }
     }
 
     logAll();

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-common/src/main/java/org/apache/reef/io/Tuple.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-common/src/main/java/org/apache/reef/io/Tuple.java 
b/lang/java/reef-common/src/main/java/org/apache/reef/io/Tuple.java
index 0ab60fe..cd2d6ed 100644
--- a/lang/java/reef-common/src/main/java/org/apache/reef/io/Tuple.java
+++ b/lang/java/reef-common/src/main/java/org/apache/reef/io/Tuple.java
@@ -41,13 +41,21 @@ public final class Tuple<K, V> {
 
   @Override
   public boolean equals(final Object o) {
-    if (this == o) return true;
-    if (o == null || getClass() != o.getClass()) return false;
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
 
     final Tuple tuple = (Tuple) o;
 
-    if (!k.equals(tuple.k)) return false;
-    if (!v.equals(tuple.v)) return false;
+    if (!k.equals(tuple.k)) {
+      return false;
+    }
+    if (!v.equals(tuple.v)) {
+      return false;
+    }
 
     return true;
   }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/DriverStatusManager.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/DriverStatusManager.java
 
b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/DriverStatusManager.java
index 4a329e2..793a84f 100644
--- 
a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/DriverStatusManager.java
+++ 
b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/DriverStatusManager.java
@@ -180,17 +180,17 @@ public final class DriverStatusManager {
     if (this.driverTerminationHasBeenCommunicatedToClient) {
       LOG.log(Level.SEVERE, ".sendJobEndingMessageToClient() called twice. 
Ignoring the second call");
     } else {
-      { // Log the shutdown situation
-        if (this.shutdownCause.isPresent()) {
-          LOG.log(Level.WARNING, "Sending message about an unclean driver 
shutdown.", this.shutdownCause.get());
-        }
-        if (exception.isPresent()) {
-          LOG.log(Level.WARNING, "There was an exception during 
clock.close().", exception.get());
-        }
-        if (this.shutdownCause.isPresent() && exception.isPresent()) {
-          LOG.log(Level.WARNING, "The driver is shutdown because of an 
exception (see above) and there was an exception during clock.close(). Only the 
first exception will be sent to the client");
-        }
+      // Log the shutdown situation
+      if (this.shutdownCause.isPresent()) {
+        LOG.log(Level.WARNING, "Sending message about an unclean driver 
shutdown.", this.shutdownCause.get());
       }
+      if (exception.isPresent()) {
+        LOG.log(Level.WARNING, "There was an exception during clock.close().", 
exception.get());
+      }
+      if (this.shutdownCause.isPresent() && exception.isPresent()) {
+        LOG.log(Level.WARNING, "The driver is shutdown because of an exception 
(see above) and there was an exception during clock.close(). Only the first 
exception will be sent to the client");
+      }
+
       if (this.shutdownCause.isPresent()) {
         // Send the earlier exception, if there was one
         this.clientConnection.send(getJobEndingMessage(this.shutdownCause));

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/client/ClientManager.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/client/ClientManager.java
 
b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/client/ClientManager.java
index 51d090c..8540837 100644
--- 
a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/client/ClientManager.java
+++ 
b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/client/ClientManager.java
@@ -114,8 +114,9 @@ public final class ClientManager implements 
EventHandler<ClientRuntimeProtocol.J
       return clientCloseDispatcher;
     } else {
       synchronized (this) {
-        if (clientCloseDispatcher == null)
+        if (clientCloseDispatcher == null) {
           clientCloseDispatcher = new 
BroadCastEventHandler<>(clientCloseHandlers.get());
+        }
       }
       return clientCloseDispatcher;
     }
@@ -126,8 +127,9 @@ public final class ClientManager implements 
EventHandler<ClientRuntimeProtocol.J
       return clientCloseWithMessageDispatcher;
     } else {
       synchronized (this) {
-        if (clientCloseWithMessageDispatcher == null)
+        if (clientCloseWithMessageDispatcher == null) {
           clientCloseWithMessageDispatcher = new 
BroadCastEventHandler<>(clientCloseWithMessageHandlers.get());
+        }
       }
       return clientCloseWithMessageDispatcher;
     }
@@ -138,8 +140,9 @@ public final class ClientManager implements 
EventHandler<ClientRuntimeProtocol.J
       return clientMessageDispatcher;
     } else {
       synchronized (this) {
-        if (clientMessageDispatcher == null)
+        if (clientMessageDispatcher == null) {
           clientMessageDispatcher = new 
BroadCastEventHandler<>(clientMessageHandlers.get());
+        }
       }
       return clientMessageDispatcher;
     }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/context/ContextRepresenters.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/context/ContextRepresenters.java
 
b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/context/ContextRepresenters.java
index 0dffd19..b47da36 100644
--- 
a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/context/ContextRepresenters.java
+++ 
b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/context/ContextRepresenters.java
@@ -65,7 +65,9 @@ public final class ContextRepresenters {
    */
   public synchronized EvaluatorContext getContext(final String contextId) {
     for (final EvaluatorContext context : this.contextStack) {
-      if (context.getId().equals(contextId)) return context;
+      if (context.getId().equals(contextId)) {
+        return context;
+      }
     }
     throw new RuntimeException("Unknown evaluator context " + contextId);
   }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/evaluator/EvaluatorMessageDispatcher.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/evaluator/EvaluatorMessageDispatcher.java
 
b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/evaluator/EvaluatorMessageDispatcher.java
index 143d0c9..ef6be8e 100644
--- 
a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/evaluator/EvaluatorMessageDispatcher.java
+++ 
b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/evaluator/EvaluatorMessageDispatcher.java
@@ -118,56 +118,52 @@ public final class EvaluatorMessageDispatcher {
     this.driverRestartApplicationDispatcher = new 
DispatchingEStage(this.serviceDispatcher);
     this.driverRestartServiceDispatcher = new 
DispatchingEStage(this.serviceDispatcher);
 
-    { // Application Context event handlers
-      this.applicationDispatcher.register(ActiveContext.class, 
contextActiveHandlers);
-      this.applicationDispatcher.register(ClosedContext.class, 
contextClosedHandlers);
-      this.applicationDispatcher.register(FailedContext.class, 
contextFailedHandlers);
-      this.applicationDispatcher.register(ContextMessage.class, 
contextMessageHandlers);
-    }
-    { // Service Context event handlers
-      this.serviceDispatcher.register(ActiveContext.class, 
serviceContextActiveHandlers);
-      this.serviceDispatcher.register(ClosedContext.class, 
serviceContextClosedHandlers);
-      this.serviceDispatcher.register(FailedContext.class, 
serviceContextFailedHandlers);
-      this.serviceDispatcher.register(ContextMessage.class, 
serviceContextMessageHandlers);
-    }
-    { // Application Task event handlers.
-      this.applicationDispatcher.register(RunningTask.class, 
taskRunningHandlers);
-      this.applicationDispatcher.register(CompletedTask.class, 
taskCompletedHandlers);
-      this.applicationDispatcher.register(SuspendedTask.class, 
taskSuspendedHandlers);
-      this.applicationDispatcher.register(TaskMessage.class, 
taskMessageEventHandlers);
-      this.applicationDispatcher.register(FailedTask.class, 
taskExceptionEventHandlers);
-    }
-    { // Service Task event handlers
-      this.serviceDispatcher.register(RunningTask.class, 
serviceTaskRunningEventHandlers);
-      this.serviceDispatcher.register(CompletedTask.class, 
serviceTaskCompletedEventHandlers);
-      this.serviceDispatcher.register(SuspendedTask.class, 
serviceTaskSuspendedEventHandlers);
-      this.serviceDispatcher.register(TaskMessage.class, 
serviceTaskMessageEventHandlers);
-      this.serviceDispatcher.register(FailedTask.class, 
serviceTaskExceptionEventHandlers);
-    }
-    { // Application Evaluator event handlers
-      this.applicationDispatcher.register(FailedEvaluator.class, 
evaluatorFailedHandlers);
-      this.applicationDispatcher.register(CompletedEvaluator.class, 
evaluatorCompletedHandlers);
-      this.applicationDispatcher.register(AllocatedEvaluator.class, 
evaluatorAllocatedHandlers);
-    }
-    { // Service Evaluator event handlers
-      this.serviceDispatcher.register(FailedEvaluator.class, 
serviceEvaluatorFailedHandlers);
-      this.serviceDispatcher.register(CompletedEvaluator.class, 
serviceEvaluatorCompletedHandlers);
-      this.serviceDispatcher.register(AllocatedEvaluator.class, 
serviceEvaluatorAllocatedEventHandlers);
-    }
+    // Application Context event handlers
+    this.applicationDispatcher.register(ActiveContext.class, 
contextActiveHandlers);
+    this.applicationDispatcher.register(ClosedContext.class, 
contextClosedHandlers);
+    this.applicationDispatcher.register(FailedContext.class, 
contextFailedHandlers);
+    this.applicationDispatcher.register(ContextMessage.class, 
contextMessageHandlers);
+
+    // Service Context event handlers
+    this.serviceDispatcher.register(ActiveContext.class, 
serviceContextActiveHandlers);
+    this.serviceDispatcher.register(ClosedContext.class, 
serviceContextClosedHandlers);
+    this.serviceDispatcher.register(FailedContext.class, 
serviceContextFailedHandlers);
+    this.serviceDispatcher.register(ContextMessage.class, 
serviceContextMessageHandlers);
+
+    // Application Task event handlers.
+    this.applicationDispatcher.register(RunningTask.class, 
taskRunningHandlers);
+    this.applicationDispatcher.register(CompletedTask.class, 
taskCompletedHandlers);
+    this.applicationDispatcher.register(SuspendedTask.class, 
taskSuspendedHandlers);
+    this.applicationDispatcher.register(TaskMessage.class, 
taskMessageEventHandlers);
+    this.applicationDispatcher.register(FailedTask.class, 
taskExceptionEventHandlers);
+
+    // Service Task event handlers
+    this.serviceDispatcher.register(RunningTask.class, 
serviceTaskRunningEventHandlers);
+    this.serviceDispatcher.register(CompletedTask.class, 
serviceTaskCompletedEventHandlers);
+    this.serviceDispatcher.register(SuspendedTask.class, 
serviceTaskSuspendedEventHandlers);
+    this.serviceDispatcher.register(TaskMessage.class, 
serviceTaskMessageEventHandlers);
+    this.serviceDispatcher.register(FailedTask.class, 
serviceTaskExceptionEventHandlers);
+
+    // Application Evaluator event handlers
+    this.applicationDispatcher.register(FailedEvaluator.class, 
evaluatorFailedHandlers);
+    this.applicationDispatcher.register(CompletedEvaluator.class, 
evaluatorCompletedHandlers);
+    this.applicationDispatcher.register(AllocatedEvaluator.class, 
evaluatorAllocatedHandlers);
+
+    // Service Evaluator event handlers
+    this.serviceDispatcher.register(FailedEvaluator.class, 
serviceEvaluatorFailedHandlers);
+    this.serviceDispatcher.register(CompletedEvaluator.class, 
serviceEvaluatorCompletedHandlers);
+    this.serviceDispatcher.register(AllocatedEvaluator.class, 
serviceEvaluatorAllocatedEventHandlers);
 
     // Application event handlers specific to a Driver restart
-    {
-      this.driverRestartApplicationDispatcher.register(RunningTask.class, 
driverRestartTaskRunningHandlers);
-      this.driverRestartApplicationDispatcher.register(ActiveContext.class, 
driverRestartActiveContextHandlers);
-      
this.driverRestartApplicationDispatcher.register(DriverRestartCompleted.class, 
driverRestartCompletedHandlers);
-    }
+    this.driverRestartApplicationDispatcher.register(RunningTask.class, 
driverRestartTaskRunningHandlers);
+    this.driverRestartApplicationDispatcher.register(ActiveContext.class, 
driverRestartActiveContextHandlers);
+    
this.driverRestartApplicationDispatcher.register(DriverRestartCompleted.class, 
driverRestartCompletedHandlers);
 
     // Service event handlers specific to a Driver restart
-    {
-      this.driverRestartServiceDispatcher.register(RunningTask.class, 
serviceDriverRestartTaskRunningHandlers);
-      this.driverRestartServiceDispatcher.register(ActiveContext.class, 
serviceDriverRestartActiveContextHandlers);
-      
this.driverRestartServiceDispatcher.register(DriverRestartCompleted.class, 
serviceDriverRestartCompletedHandlers);
-    }
+    this.driverRestartServiceDispatcher.register(RunningTask.class, 
serviceDriverRestartTaskRunningHandlers);
+    this.driverRestartServiceDispatcher.register(ActiveContext.class, 
serviceDriverRestartActiveContextHandlers);
+    this.driverRestartServiceDispatcher.register(DriverRestartCompleted.class, 
serviceDriverRestartCompletedHandlers);
+
     LOG.log(Level.FINE, "Instantiated 'EvaluatorMessageDispatcher'");
   }
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/launch/REEFUncaughtExceptionHandler.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/launch/REEFUncaughtExceptionHandler.java
 
b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/launch/REEFUncaughtExceptionHandler.java
index 4030900..5159a4d 100644
--- 
a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/launch/REEFUncaughtExceptionHandler.java
+++ 
b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/launch/REEFUncaughtExceptionHandler.java
@@ -49,9 +49,9 @@ final class REEFUncaughtExceptionHandler implements 
Thread.UncaughtExceptionHand
     LOG.log(Level.SEVERE, msg, throwable);
     this.errorHandler.onNext(new Exception(msg, throwable));
     try {
-      this.wait(100); // TODO: Remove
+      this.wait(100);
     } catch (final InterruptedException e) {
-
+      // try-catch block used to wait and give process a chance to setup 
communication with its parent
     }
     this.errorHandler.close();
     LOG.log(Level.SEVERE, "System.exit(1)");

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/utils/BroadCastEventHandler.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/utils/BroadCastEventHandler.java
 
b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/utils/BroadCastEventHandler.java
index 965441f..517e7b5 100644
--- 
a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/utils/BroadCastEventHandler.java
+++ 
b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/utils/BroadCastEventHandler.java
@@ -33,8 +33,9 @@ public class BroadCastEventHandler<E> implements 
EventHandler<E> {
 
   @Override
   public void onNext(final E event) {
-    for (final EventHandler<E> handler : handlers)
+    for (final EventHandler<E> handler : handlers) {
       handler.onNext(event);
+    }
   }
 
   public void addEventHandler(final EventHandler<E> eventHandler) {

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-common/src/main/java/org/apache/reef/util/MemoryUtils.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-common/src/main/java/org/apache/reef/util/MemoryUtils.java 
b/lang/java/reef-common/src/main/java/org/apache/reef/util/MemoryUtils.java
index 69aced0..3e83319 100644
--- a/lang/java/reef-common/src/main/java/org/apache/reef/util/MemoryUtils.java
+++ b/lang/java/reef-common/src/main/java/org/apache/reef/util/MemoryUtils.java
@@ -98,12 +98,11 @@ public final class MemoryUtils {
 
   public static void main(final String[] args) {
     System.out.println(memPoolNames());
-    {
-      final byte[] b = new byte[1 << 24];
-      System.out.println(currentEdenMemoryUsageMB()
-          + "," + currentOldMemoryUsageMB()
-          + "," + currentPermMemoryUsageMB());
-    }
+
+    final byte[] b = new byte[1 << 24];
+    System.out.println(currentEdenMemoryUsageMB()
+        + "," + currentOldMemoryUsageMB()
+        + "," + currentPermMemoryUsageMB());
 
     System.gc();
     System.out.println(currentEdenMemoryUsageMB()

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-common/src/main/resources/checkstyle.xml
----------------------------------------------------------------------
diff --git a/lang/java/reef-common/src/main/resources/checkstyle.xml 
b/lang/java/reef-common/src/main/resources/checkstyle.xml
index b1af586..9f377e6 100644
--- a/lang/java/reef-common/src/main/resources/checkstyle.xml
+++ b/lang/java/reef-common/src/main/resources/checkstyle.xml
@@ -65,7 +65,10 @@
     <module name="FileLength"/>
     <module name="FileTabCharacter"/>
 
+    <module name="SuppressWarningsFilter"/>
+
     <module name="TreeWalker">
+        <module name="SuppressWarningsHolder"/>
 
         <!-- Checks for Javadoc comments.                     -->
         <!-- See http://checkstyle.sf.net/config_javadoc.html -->
@@ -147,8 +150,12 @@
 
         <!-- Checks for blocks. You know, those {}'s         -->
         <!-- See http://checkstyle.sf.net/config_blocks.html -->
-        <module name="AvoidNestedBlocks"/>
-        <module name="EmptyBlock"/>
+        <module name="AvoidNestedBlocks">
+            <property name="allowInSwitchCase" value="true"/>
+        </module>
+        <module name="EmptyBlock">
+            <property name="option" value="text"/>
+        </module>
         <module name="LeftCurly"/>
         <module name="NeedBraces"/>
         <module name="RightCurly"/>

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/utils/math/VectorCodec.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/utils/math/VectorCodec.java
 
b/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/utils/math/VectorCodec.java
index 36448d2..92ec713 100644
--- 
a/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/utils/math/VectorCodec.java
+++ 
b/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/utils/math/VectorCodec.java
@@ -44,8 +44,9 @@ public class VectorCodec implements Codec<Vector> {
     try (DataInputStream dais = new DataInputStream(bais)) {
       int size = dais.readInt();
       result = new DenseVector(size);
-      for (int i = 0; i < size; i++)
+      for (int i = 0; i < size; i++) {
         result.set(i, dais.readDouble());
+      }
     } catch (IOException e) {
       throw new RuntimeException(e.getCause());
     }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/utils/math/Window.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/utils/math/Window.java
 
b/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/utils/math/Window.java
index 9bb32d3..bd02439 100644
--- 
a/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/utils/math/Window.java
+++ 
b/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/utils/math/Window.java
@@ -44,8 +44,9 @@ public class Window {
   }
 
   public double avg() {
-    if (list.size() == 0)
+    if (list.size() == 0) {
       return 0;
+    }
     double retVal = 0;
     for (double d : list) {
       retVal += d;
@@ -54,12 +55,14 @@ public class Window {
   }
 
   public double avgIfAdded(double d) {
-    if (list.isEmpty())
+    if (list.isEmpty()) {
       return d;
+    }
     int start = (list.size() < maxSize) ? 0 : 1;
     int numElems = (list.size() < maxSize) ? list.size() + 1 : maxSize;
-    for (int i = start; i < list.size(); i++)
+    for (int i = start; i < list.size(); i++) {
       d += list.get(i);
+    }
     return d / numElems;
   }
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-examples/src/main/java/org/apache/reef/examples/pool/JobDriver.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-examples/src/main/java/org/apache/reef/examples/pool/JobDriver.java
 
b/lang/java/reef-examples/src/main/java/org/apache/reef/examples/pool/JobDriver.java
index 2f983bf..150739b 100644
--- 
a/lang/java/reef-examples/src/main/java/org/apache/reef/examples/pool/JobDriver.java
+++ 
b/lang/java/reef-examples/src/main/java/org/apache/reef/examples/pool/JobDriver.java
@@ -227,7 +227,9 @@ public final class JobDriver {
 
       LOG.log(Level.INFO, "TIME: Active Context {0}", context.getId());
 
-      if (isPiggyback) return; // Task already submitted
+      if (isPiggyback) {
+        return; // Task already submitted
+      }
 
       final boolean runTask;
       final int nTask;

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-examples/src/main/java/org/apache/reef/examples/scheduler/TaskEntity.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-examples/src/main/java/org/apache/reef/examples/scheduler/TaskEntity.java
 
b/lang/java/reef-examples/src/main/java/org/apache/reef/examples/scheduler/TaskEntity.java
index ba837ff..42456f4 100644
--- 
a/lang/java/reef-examples/src/main/java/org/apache/reef/examples/scheduler/TaskEntity.java
+++ 
b/lang/java/reef-examples/src/main/java/org/apache/reef/examples/scheduler/TaskEntity.java
@@ -45,13 +45,21 @@ final class TaskEntity {
 
   @Override
   public boolean equals(Object o) {
-    if (this == o) return true;
-    if (o == null || getClass() != o.getClass()) return false;
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
 
     TaskEntity that = (TaskEntity) o;
 
-    if (taskId != that.taskId) return false;
-    if (!command.equals(that.command)) return false;
+    if (taskId != that.taskId) {
+      return false;
+    }
+    if (!command.equals(that.command)) {
+      return false;
+    }
 
     return true;
   }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-io/src/main/java/org/apache/reef/io/data/loading/impl/EvaluatorToPartitionMapper.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-io/src/main/java/org/apache/reef/io/data/loading/impl/EvaluatorToPartitionMapper.java
 
b/lang/java/reef-io/src/main/java/org/apache/reef/io/data/loading/impl/EvaluatorToPartitionMapper.java
index e7d17e1..3ac11e9 100644
--- 
a/lang/java/reef-io/src/main/java/org/apache/reef/io/data/loading/impl/EvaluatorToPartitionMapper.java
+++ 
b/lang/java/reef-io/src/main/java/org/apache/reef/io/data/loading/impl/EvaluatorToPartitionMapper.java
@@ -132,8 +132,9 @@ public class EvaluatorToPartitionMapper<V extends 
InputSplit> {
     }
     while (true) {
       final NumberedSplit<V> split = value.poll();
-      if (split == null)
+      if (split == null) {
         return null;
+      }
       if (value == unallocatedSplits || unallocatedSplits.remove(split)) {
         LOG.log(Level.FINE, "Found split-" + split.getIndex() + " in the 
queue");
         final NumberedSplit<V> old = 
evaluatorToSplits.putIfAbsent(evaluatorId, split);

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-io/src/main/java/org/apache/reef/io/data/loading/impl/NumberedSplit.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-io/src/main/java/org/apache/reef/io/data/loading/impl/NumberedSplit.java
 
b/lang/java/reef-io/src/main/java/org/apache/reef/io/data/loading/impl/NumberedSplit.java
index 9efa127..f3cbc97 100644
--- 
a/lang/java/reef-io/src/main/java/org/apache/reef/io/data/loading/impl/NumberedSplit.java
+++ 
b/lang/java/reef-io/src/main/java/org/apache/reef/io/data/loading/impl/NumberedSplit.java
@@ -53,11 +53,12 @@ final class NumberedSplit<E> implements 
Comparable<NumberedSplit<E>> {
 
   @Override
   public int compareTo(final NumberedSplit<E> o) {
-    if (this.index == o.index)
+    if (this.index == o.index) {
       return 0;
-    if (this.index < o.index)
+    }
+    if (this.index < o.index) {
       return -1;
-    else
-      return 1;
+    }
+    return 1;
   }
 }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-io/src/main/java/org/apache/reef/io/network/util/StringIdentifier.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/util/StringIdentifier.java
 
b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/util/StringIdentifier.java
index c833562..f8da208 100644
--- 
a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/util/StringIdentifier.java
+++ 
b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/util/StringIdentifier.java
@@ -68,12 +68,14 @@ public class StringIdentifier implements 
ComparableIdentifier {
   @Override
   public int compareTo(Identifier o) {
     if (o == null) {
-      if (str == null)
+      if (str == null) {
         return 0;
+      }
       return 1;
     } else {
-      if (str == null)
+      if (str == null) {
         return -1;
+      }
       return str.compareTo(o.toString());
     }
   }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/FramingOutputStream.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/FramingOutputStream.java
 
b/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/FramingOutputStream.java
index 5c3b32f..3fe4145 100644
--- 
a/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/FramingOutputStream.java
+++ 
b/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/FramingOutputStream.java
@@ -86,7 +86,9 @@ public class FramingOutputStream extends OutputStream 
implements Accumulable<byt
   public void close() throws IOException {
     if (!closed) {
       try {
-        if (this.offset > 0) nextFrame();
+        if (this.offset > 0) {
+          nextFrame();
+        }
       } catch (StorageException e) {
         throw (IOException) e.getCause();
       }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/ram/SortingRamSpool.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/ram/SortingRamSpool.java
 
b/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/ram/SortingRamSpool.java
index 5c8ee60..1ba55f4 100644
--- 
a/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/ram/SortingRamSpool.java
+++ 
b/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/ram/SortingRamSpool.java
@@ -32,8 +32,9 @@ public class SortingRamSpool<T> implements Spool<T> {
   private Accumulator<T> acc = new Accumulator<T>() {
     @Override
     public void add(T datum) throws StorageException {
-      if (ready)
+      if (ready) {
         throw new IllegalStateException("add called after close!");
+      }
       heap.add(datum);
     }
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/util/GetAllIterable.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/util/GetAllIterable.java
 
b/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/util/GetAllIterable.java
index 68583b1..8be1b37 100644
--- 
a/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/util/GetAllIterable.java
+++ 
b/lang/java/reef-io/src/main/java/org/apache/reef/io/storage/util/GetAllIterable.java
@@ -62,8 +62,9 @@ public class GetAllIterable<T> implements
         final CharSequence key = curKey;
         curKey = findNextKey();
         lastKey = key;
-        if (key == null)
+        if (key == null) {
           throw new NoSuchElementException();
+        }
 
         final T v = map.get(key);
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/cli/TFileParser.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/cli/TFileParser.java
 
b/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/cli/TFileParser.java
index 621187a..3bbe9dd 100644
--- 
a/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/cli/TFileParser.java
+++ 
b/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/cli/TFileParser.java
@@ -88,8 +88,9 @@ final class TFileParser {
     final TFile.Reader.Scanner scanner = reader.createScanner();
     for (int counter = 0;
          counter < 3 && !scanner.atEnd();
-         counter += 1, scanner.advance()) {
+         counter += 1) {
       //skip VERSION, APPLICATION_ACL, and APPLICATION_OWNER
+      scanner.advance();
     }
     LOG.log(Level.FINE, "Created Scanner for path {0}", path);
     return scanner;

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/HDInsightInstance.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/HDInsightInstance.java
 
b/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/HDInsightInstance.java
index ecad319..5894c8c 100644
--- 
a/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/HDInsightInstance.java
+++ 
b/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/HDInsightInstance.java
@@ -233,6 +233,7 @@ public final class HDInsightInstance {
 
     // Prime the cache
     try (final CloseableHttpResponse response = 
this.httpClient.execute(targetHost, httpget, result)) {
+      // empty try block used to automatically close resources
     }
     return result;
   }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/StringEntry.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/StringEntry.java
 
b/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/StringEntry.java
index 897eb2b..994496b 100644
--- 
a/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/StringEntry.java
+++ 
b/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/StringEntry.java
@@ -77,8 +77,12 @@ public final class StringEntry {
   @Override
   public boolean equals(final Object o) {
 
-    if (this == o) return true;
-    if (o == null || getClass() != o.getClass()) return false;
+    if (this == o) {
+      return true;
+    }
+    if (o == null || getClass() != o.getClass()) {
+      return false;
+    }
 
     final StringEntry that = (StringEntry) o;
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/REEFExecutors.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/REEFExecutors.java
 
b/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/REEFExecutors.java
index 5df00ad..1de9817 100644
--- 
a/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/REEFExecutors.java
+++ 
b/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/REEFExecutors.java
@@ -48,7 +48,9 @@ final class REEFExecutors {
     this.executors.remove(id);
   }
 
-  public Set<String> getExecutorIds() { return executors.keySet(); }
+  public Set<String> getExecutorIds() {
+    return executors.keySet();
+  }
 
   public int getMemory(final String id) {
     return executors.get(id).getMemory();

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/client/YarnSubmissionHelper.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/client/YarnSubmissionHelper.java
 
b/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/client/YarnSubmissionHelper.java
index 0d573a9..637c6fd 100644
--- 
a/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/client/YarnSubmissionHelper.java
+++ 
b/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/client/YarnSubmissionHelper.java
@@ -60,21 +60,19 @@ public final class YarnSubmissionHelper implements 
Closeable{
                               final ClasspathProvider classpath) throws 
IOException, YarnException {
     this.fileNames = fileNames;
     this.classpath = classpath;
-    {
-      LOG.log(Level.FINE, "Initializing YARN Client");
-      this.yarnClient = YarnClient.createYarnClient();
-      this.yarnClient.init(yarnConfiguration);
-      this.yarnClient.start();
-      LOG.log(Level.FINE, "Initialized YARN Client");
-    }
-    {
-      LOG.log(Level.FINE, "Requesting Application ID from YARN.");
-      this.yarnClientApplication = this.yarnClient.createApplication();
-      this.applicationResponse = 
yarnClientApplication.getNewApplicationResponse();
-      this.applicationSubmissionContext = 
yarnClientApplication.getApplicationSubmissionContext();
-      this.applicationId = applicationSubmissionContext.getApplicationId();
-      LOG.log(Level.FINEST, "YARN Application ID: {0}", applicationId);
-    }
+
+    LOG.log(Level.FINE, "Initializing YARN Client");
+    this.yarnClient = YarnClient.createYarnClient();
+    this.yarnClient.init(yarnConfiguration);
+    this.yarnClient.start();
+    LOG.log(Level.FINE, "Initialized YARN Client");
+
+    LOG.log(Level.FINE, "Requesting Application ID from YARN.");
+    this.yarnClientApplication = this.yarnClient.createApplication();
+    this.applicationResponse = 
yarnClientApplication.getNewApplicationResponse();
+    this.applicationSubmissionContext = 
yarnClientApplication.getApplicationSubmissionContext();
+    this.applicationId = applicationSubmissionContext.getApplicationId();
+    LOG.log(Level.FINEST, "YARN Application ID: {0}", applicationId);
   }
 
   /**

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/driver/YarnContainerManager.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/driver/YarnContainerManager.java
 
b/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/driver/YarnContainerManager.java
index cdb10e1..1efbbf6 100644
--- 
a/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/driver/YarnContainerManager.java
+++ 
b/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/driver/YarnContainerManager.java
@@ -666,8 +666,7 @@ final class YarnContainerManager
     logContainerChange(entry);
   }
 
-  private void logContainerChange(final String entry)
-  {
+  private void logContainerChange(final String entry) {
     try {
       writeToEvaluatorLog(entry);
     } catch (final IOException e) {

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/InjectionFuture.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/InjectionFuture.java
 
b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/InjectionFuture.java
index 79dc98e..c6ddde7 100644
--- 
a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/InjectionFuture.java
+++ 
b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/InjectionFuture.java
@@ -108,7 +108,9 @@ public final class InjectionFuture<T> implements Future<T> {
   @SuppressWarnings("unchecked")
   @Override
   public T get() {
-    if (instance != null) return instance;
+    if (instance != null) {
+      return instance;
+    }
     try {
       synchronized (injector) {
         final T t;

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/ClassHierarchyImpl.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/ClassHierarchyImpl.java
 
b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/ClassHierarchyImpl.java
index dedf318..8c898e9 100644
--- 
a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/ClassHierarchyImpl.java
+++ 
b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/ClassHierarchyImpl.java
@@ -299,6 +299,7 @@ public class ClassHierarchyImpl implements 
JavaClassHierarchy {
       Node n = getAlreadyBoundNode(c);
       return n;
     } catch (NameResolutionException e) {
+      // node not bound yet
     }
     // First, walk up the class hierarchy, registering all out parents. This
     // can't be loopy.
@@ -344,11 +345,8 @@ public class ClassHierarchyImpl implements 
JavaClassHierarchy {
             NamedParameterNode<?> np = (NamedParameterNode<?>) register(arg
                 .getNamedParameterName());
             try {
-              if (np.isSet()) {
-                /// XXX When handling sets, need to track target of generic 
parameter, and check the type here!
-              } else if (np.isList()) {
-
-              } else {
+              // TODO: When handling sets, need to track target of generic 
parameter, and check the type here!
+              if (!np.isSet() && !np.isList()) {
                 if 
(!ReflectionUtilities.isCoercable(classForName(arg.getType()),
                     classForName(np.getFullArgName()))) {
                   throw new ClassHierarchyException(
@@ -385,6 +383,7 @@ public class ClassHierarchyImpl implements 
JavaClassHierarchy {
     try {
       return getAlreadyBoundNode(c);
     } catch (NameResolutionException e) {
+      // node not bound yet
     }
 
     final Node n = buildPathToNode(c);

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/types/AbstractNode.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/types/AbstractNode.java
 
b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/types/AbstractNode.java
index cc95b0f..845471e 100644
--- 
a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/types/AbstractNode.java
+++ 
b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/types/AbstractNode.java
@@ -55,8 +55,12 @@ public abstract class AbstractNode implements Node {
 
   @Override
   public boolean equals(Object o) {
-    if (o == null) return false;
-    if (o == this) return true;
+    if (o == null) {
+      return false;
+    }
+    if (o == this) {
+      return true;
+    }
 
     AbstractNode n = (AbstractNode) o;
     final boolean parentsEqual;

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/types/ConstructorDefImpl.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/types/ConstructorDefImpl.java
 
b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/types/ConstructorDefImpl.java
index 4241490..46b2655 100644
--- 
a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/types/ConstructorDefImpl.java
+++ 
b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/types/ConstructorDefImpl.java
@@ -135,8 +135,9 @@ public class ConstructorDefImpl<T> implements 
ConstructorDef<T> {
         }
       }
       // If not, then argument j from def is not in our list.  Return false.
-      if (!found)
+      if (!found) {
         return false;
+      }
     }
     // Everything in def's arg list is in ours.  Do we have at least one extra
     // argument?

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/util/ReflectionUtilities.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/util/ReflectionUtilities.java
 
b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/util/ReflectionUtilities.java
index 4bff7f4..ae77ff2 100644
--- 
a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/util/ReflectionUtilities.java
+++ 
b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/util/ReflectionUtilities.java
@@ -108,7 +108,9 @@ public class ReflectionUtilities {
       if (c instanceof Class) {
         Class<?> clz = (Class<?>) c;
         final Type sc = clz.getSuperclass();
-        if (sc != null) workQueue.add(sc); //c.getSuperclass());
+        if (sc != null) {
+          workQueue.add(sc); //c.getSuperclass());
+        }
         workQueue.addAll(Arrays.asList(clz.getGenericInterfaces()));
       } else if (c instanceof ParameterizedType) {
         ParameterizedType pt = (ParameterizedType) c;
@@ -116,7 +118,9 @@ public class ReflectionUtilities {
         final Type sc = rawPt.getSuperclass();
 //        workQueue.add(pt);
 //        workQueue.add(rawPt);
-        if (sc != null) workQueue.add(sc);
+        if (sc != null) {
+          workQueue.add(sc);
+        }
         workQueue.addAll(Arrays.asList(rawPt.getGenericInterfaces()));
       } else if (c instanceof WildcardType) {
         workQueue.add(Object.class); // XXX not really correct, but close 
enough?
@@ -262,7 +266,9 @@ public class ReflectionUtilities {
       ArrayList<Type> al = new ArrayList<>();
       al.addAll(Arrays.asList(clazz.getGenericInterfaces()));
       Type sc = clazz.getGenericSuperclass();
-      if (sc != null) al.add(sc);
+      if (sc != null) {
+        al.add(sc);
+      }
 
       final Type[] interfaces = al.toArray(new Type[0]);
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/util/Tint.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/util/Tint.java 
b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/util/Tint.java
index 6d48943..130e93f 100644
--- a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/util/Tint.java
+++ b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/util/Tint.java
@@ -339,8 +339,9 @@ public class Tint {
           for (int j = 1; j < tok.length; j++) {
             if (tok[j].matches("^[A-Z].*") || j > 4) {
               break;
-            } else
+            } else {
               sb.append("." + tok[j]);
+            }
           }
           String pack = sb.toString();
           if (!currentPackage.equals(pack)) {
@@ -488,7 +489,7 @@ public class Tint {
                     }
                   }
                 } catch (NameResolutionException ex) {
-
+                  //
                 }
                 try {
                   String s = e.getValue();
@@ -505,7 +506,7 @@ public class Tint {
                     }
                   }
                 } catch (NameResolutionException ex) {
-
+                  //
                 }
               }
             }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-utils/src/main/java/org/apache/reef/util/Optional.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-utils/src/main/java/org/apache/reef/util/Optional.java 
b/lang/java/reef-utils/src/main/java/org/apache/reef/util/Optional.java
index 1940e0b..46d321d 100644
--- a/lang/java/reef-utils/src/main/java/org/apache/reef/util/Optional.java
+++ b/lang/java/reef-utils/src/main/java/org/apache/reef/util/Optional.java
@@ -108,9 +108,13 @@ public final class Optional<T> implements Serializable {
   @Override
   public boolean equals(final Object obj) {
 
-    if (this == obj) return true;
+    if (this == obj) {
+      return true;
+    }
 
-    if (obj == null || getClass() != obj.getClass()) return false;
+    if (obj == null || getClass() != obj.getClass()) {
+      return false;
+    }
 
     final Optional that = (Optional) obj;
     return this.value == that.value || (this.value != null && 
this.value.equals(that.value));

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/examples/join/BlockingJoin.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/examples/join/BlockingJoin.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/examples/join/BlockingJoin.java
index ed02117..72c6ea6 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/examples/join/BlockingJoin.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/examples/join/BlockingJoin.java
@@ -75,7 +75,9 @@ public class BlockingJoin implements StaticObservable {
 
       @Override
       public void onNext(TupleEvent value) {
-        if (!leftDone) waitUntilLeftIsDone();
+        if (!leftDone) {
+          waitUntilLeftIsDone();
+        }
         if (left.contains(value)) {
           out.onNext(value);
         }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/examples/p2p/Pull2Push.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/examples/p2p/Pull2Push.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/examples/p2p/Pull2Push.java
index ae4378b..dd3d7ee 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/examples/p2p/Pull2Push.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/examples/p2p/Pull2Push.java
@@ -81,8 +81,6 @@ public final class Pull2Push<T> implements Runnable, 
AutoCloseable {
           // The message source has returned null as the next message. We drop 
the message source in that case.
           Logger.getLogger(Pull2Push.class.getName()).log(Level.INFO, "Droping 
message source {0} from the queue", nextSource.toString());
         }
-      } else {
-        // No source where available. We could put a wait() here.
       }
     }
   }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/DefaultIdentifierFactory.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/DefaultIdentifierFactory.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/DefaultIdentifierFactory.java
index b652452..4b6a3f7 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/DefaultIdentifierFactory.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/DefaultIdentifierFactory.java
@@ -70,8 +70,9 @@ public class DefaultIdentifierFactory implements 
IdentifierFactory {
   @Override
   public Identifier getNewInstance(String str) {
     int index = str.indexOf("://");
-    if (index < 0)
+    if (index < 0) {
       throw new RemoteRuntimeException("Invalid name " + str);
+    }
     String type = str.substring(0, index);
     Class<? extends Identifier> clazz = typeToClazzMap.get(type);
     Class<?>[] argTypes = {String.class};

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/DefaultThreadFactory.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/DefaultThreadFactory.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/DefaultThreadFactory.java
index c94aaf2..e020a7f 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/DefaultThreadFactory.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/DefaultThreadFactory.java
@@ -73,12 +73,15 @@ public final class DefaultThreadFactory implements 
ThreadFactory {
   @Override
   public Thread newThread(Runnable r) {
     Thread t = new Thread(group, r, prefix + threadNumber.getAndIncrement(), 
0);
-    if (t.isDaemon())
+    if (t.isDaemon()) {
       t.setDaemon(false);
-    if (t.getPriority() != Thread.NORM_PRIORITY)
+    }
+    if (t.getPriority() != Thread.NORM_PRIORITY) {
       t.setPriority(Thread.NORM_PRIORITY);
-    if (uncaughtExceptionHandler != null)
+    }
+    if (uncaughtExceptionHandler != null) {
       t.setUncaughtExceptionHandler(uncaughtExceptionHandler);
+    }
     return t;
   }
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/MultiEventHandler.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/MultiEventHandler.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/MultiEventHandler.java
index 7bcfaec..e2f9923 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/MultiEventHandler.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/MultiEventHandler.java
@@ -50,8 +50,9 @@ public class MultiEventHandler<T> implements EventHandler<T> {
   @Override
   public void onNext(T event) {
     EventHandler<T> handler = (EventHandler<T>) map.get(event.getClass());
-    if (handler == null)
+    if (handler == null) {
       throw new WakeRuntimeException("No event " + event.getClass() + " 
handler");
+    }
     handler.onNext(event);
   }
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/ThreadPoolStage.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/ThreadPoolStage.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/ThreadPoolStage.java
index e5c9ff6..22bffd3 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/ThreadPoolStage.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/ThreadPoolStage.java
@@ -78,8 +78,9 @@ public final class ThreadPoolStage<T> extends 
AbstractEStage<T> {
     super(name);
     this.handler = handler;
     this.errorHandler = errorHandler;
-    if (numThreads <= 0)
+    if (numThreads <= 0) {
       throw new WakeRuntimeException(name + " numThreads " + numThreads + " is 
less than or equal to 0");
+    }
     this.numThreads = numThreads;
     this.executor = Executors.newFixedThreadPool(numThreads, new 
DefaultThreadFactory(name));
     StageManager.instance().register(this);

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/TimerStage.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/TimerStage.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/TimerStage.java
index a34af30..191110c 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/TimerStage.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/TimerStage.java
@@ -105,7 +105,9 @@ public final class TimerStage implements Stage {
 
       @Override
       public void run() {
-        if (LOG.isLoggable(Level.FINEST)) LOG.log(Level.FINEST, "{0} {1}", new 
Object[]{name, event});
+        if (LOG.isLoggable(Level.FINEST)) {
+          LOG.log(Level.FINEST, "{0} {1}", new Object[]{name, event});
+        }
         handler.onNext(event);
       }
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/WakeUncaughtExceptionHandler.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/WakeUncaughtExceptionHandler.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/WakeUncaughtExceptionHandler.java
index e3dcd9a..f729fbe 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/WakeUncaughtExceptionHandler.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/WakeUncaughtExceptionHandler.java
@@ -40,7 +40,8 @@ public final class WakeUncaughtExceptionHandler implements 
Thread.UncaughtExcept
   @Override
   public void uncaughtException(Thread t, Throwable e) {
     final String msg = "Thread " + t.getName() + " threw an uncaught 
exception.";
-    if (errorHandler != null)
+    if (errorHandler != null) {
       errorHandler.onNext(new Exception(msg, e));
+    }
   }
 }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/metrics/UniformHistogram.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/metrics/UniformHistogram.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/metrics/UniformHistogram.java
index 7677b6e..c2869ae 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/metrics/UniformHistogram.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/metrics/UniformHistogram.java
@@ -52,8 +52,9 @@ public class UniformHistogram implements Histogram {
   public void update(long value) {
     count.incrementAndGet();
     int index = (int) (value / binWidth);
-    if (index >= numBins)
+    if (index >= numBins) {
       index = numBins - 1;
+    }
     values.incrementAndGet(index);
   }
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/profiler/WakeProfiler.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/profiler/WakeProfiler.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/profiler/WakeProfiler.java
index 8b2d345..96ed581 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/profiler/WakeProfiler.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/profiler/WakeProfiler.java
@@ -110,8 +110,6 @@ public class WakeProfiler implements Aspect {
       Vertex<?> v = getVertex(o);
       if (o instanceof Set) {
         LOG.fine("Got a set arg for " + constructorDef + " length " + 
((Set<?>) o).size());
-      } else if (o instanceof InjectionFuture) {
-//        LOG.info("Got injection future arg. "->" + o);
       }
       v_args[i] = v;
     }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/MultiEncoder.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/MultiEncoder.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/MultiEncoder.java
index 41c9b95..4e3489e 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/MultiEncoder.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/MultiEncoder.java
@@ -38,7 +38,7 @@ public class MultiEncoder<T> implements Encoder<T> {
   /**
    * Constructs an encoder that encodes an object to bytes based on the class 
name.
    *
-   * @param clazzToDecoderMap
+   * @param clazzToEncoderMap
    */
   public MultiEncoder(Map<Class<? extends T>, Encoder<? extends T>> 
clazzToEncoderMap) {
     this.clazzToEncoderMap = clazzToEncoderMap;
@@ -52,8 +52,9 @@ public class MultiEncoder<T> implements Encoder<T> {
   @Override
   public byte[] encode(T obj) {
     Encoder<T> encoder = (Encoder<T>) clazzToEncoderMap.get(obj.getClass());
-    if (encoder == null)
+    if (encoder == null) {
       throw new RemoteRuntimeException("Encoder for " + obj.getClass() + " not 
known.");
+    }
 
     WakeTuplePBuf.Builder tupleBuilder = WakeTuplePBuf.newBuilder();
     tupleBuilder.setClassName(obj.getClass().getName());

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/OrderedRemoteReceiverStage.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/OrderedRemoteReceiverStage.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/OrderedRemoteReceiverStage.java
index 1d3e41f..2e76dac 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/OrderedRemoteReceiverStage.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/OrderedRemoteReceiverStage.java
@@ -125,8 +125,9 @@ class OrderedPushEventHandler implements 
EventHandler<TransportEvent> {
     re.setLocalAddress(value.getLocalAddress());
     re.setRemoteAddress(value.getRemoteAddress());
 
-    if (LOG.isLoggable(Level.FINER))
+    if (LOG.isLoggable(Level.FINER)) {
       LOG.log(Level.FINER, "{0} {1}", new Object[]{value, re});
+    }
 
     LOG.log(Level.FINER, "Value length is {0}", value.getData().length);
 
@@ -155,8 +156,9 @@ class OrderedPullEventHandler implements 
EventHandler<OrderedEventStream> {
 
   @Override
   public void onNext(OrderedEventStream stream) {
-    if (LOG.isLoggable(Level.FINER))
+    if (LOG.isLoggable(Level.FINER)) {
       LOG.log(Level.FINER, "{0}", stream);
+    }
 
     synchronized (stream) {
       RemoteEvent<byte[]> event;

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/ProxyEventHandler.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/ProxyEventHandler.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/ProxyEventHandler.java
index ad0046f..6a9fa06 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/ProxyEventHandler.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/ProxyEventHandler.java
@@ -68,8 +68,9 @@ public class ProxyEventHandler<T> implements EventHandler<T> {
    */
   @Override
   public void onNext(T event) {
-    if (LOG.isLoggable(Level.FINE))
+    if (LOG.isLoggable(Level.FINE)) {
       LOG.log(Level.FINE, "remoteid: {0}\n{1}", new 
Object[]{remoteId.getSocketAddress(), event.toString()});
+    }
     handler.onNext(new RemoteEvent<T>(myId.getSocketAddress(), 
remoteId.getSocketAddress(), "", remoteSinkName,
         seqGen.getNextSeq(remoteId.getSocketAddress()), event));
   }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteEventComparator.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteEventComparator.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteEventComparator.java
index 3e025bd..83eb6ce 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteEventComparator.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteEventComparator.java
@@ -27,10 +27,12 @@ public class RemoteEventComparator<T> implements 
Comparator<RemoteEvent<T>> {
 
   @Override
   public int compare(RemoteEvent<T> o1, RemoteEvent<T> o2) {
-    if (o1.getSeq() < o2.getSeq())
+    if (o1.getSeq() < o2.getSeq()) {
       return -1;
-    if (o1.getSeq() > o2.getSeq())
+    }
+    if (o1.getSeq() > o2.getSeq()) {
       return 1;
+    }
     return 0;
   }
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteEventEncoder.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteEventEncoder.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteEventEncoder.java
index 7d3c7da..d5a777b 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteEventEncoder.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteEventEncoder.java
@@ -50,10 +50,12 @@ public class RemoteEventEncoder<T> implements 
Encoder<RemoteEvent<T>> {
    */
   @Override
   public byte[] encode(RemoteEvent<T> obj) {
-    if (obj.getSink() == null)
+    if (obj.getSink() == null) {
       throw new RemoteRuntimeException("Sink stage is null");
-    if (obj.getEvent() == null)
+    }
+    if (obj.getEvent() == null) {
       throw new RemoteRuntimeException("Event is null");
+    }
 
     WakeMessagePBuf.Builder builder = WakeMessagePBuf.newBuilder();
     String source = obj.getSource() == null ? "" : obj.getSource();

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteReceiverEventHandler.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteReceiverEventHandler.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteReceiverEventHandler.java
index b7386b0..c75b30f 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteReceiverEventHandler.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteReceiverEventHandler.java
@@ -54,8 +54,9 @@ class RemoteReceiverEventHandler implements 
EventHandler<TransportEvent> {
     re.setLocalAddress(e.getLocalAddress());
     re.setRemoteAddress(e.getRemoteAddress());
 
-    if (LOG.isLoggable(Level.FINER))
+    if (LOG.isLoggable(Level.FINER)) {
       LOG.log(Level.FINER, "{0} {1}", new Object[]{e, re});
+    }
     handler.onNext(re);
   }
 }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteSenderEventHandler.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteSenderEventHandler.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteSenderEventHandler.java
index 394c310..308afc9 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteSenderEventHandler.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/RemoteSenderEventHandler.java
@@ -107,8 +107,9 @@ class RemoteSenderEventHandler<T> implements 
EventHandler<RemoteEvent<T>> {
         // encode and write bytes
         // consumeQueue();
 
-        if (LOG.isLoggable(Level.FINEST))
+        if (LOG.isLoggable(Level.FINEST)) {
           LOG.log(Level.FINEST, "Send an event from " + 
linkRef.get().getLocalAddress() + " to " + linkRef.get().getRemoteAddress() + " 
value " + value);
+        }
         linkRef.get().write(encoder.encode(value));
       }
     } catch (RemoteRuntimeException ex2) {

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/transport/netty/NettyMessagingTransport.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/transport/netty/NettyMessagingTransport.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/transport/netty/NettyMessagingTransport.java
index 0072b7e..f76edfb 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/transport/netty/NettyMessagingTransport.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/transport/netty/NettyMessagingTransport.java
@@ -187,7 +187,9 @@ public class NettyMessagingTransport implements Transport {
     } else {
       Iterator<Integer> ports = tcpPortProvider.iterator();
       while (acceptor == null) {
-        if (!ports.hasNext()) break;
+        if (!ports.hasNext()) {
+          break;
+        }
         port = ports.next();
         LOG.log(Level.FINEST, "Try port {0}", port);
         try {

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/rx/impl/RxThreadPoolStage.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/rx/impl/RxThreadPoolStage.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/rx/impl/RxThreadPoolStage.java
index e9a4526..82d1208 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/rx/impl/RxThreadPoolStage.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/rx/impl/RxThreadPoolStage.java
@@ -83,8 +83,9 @@ public final class RxThreadPoolStage<T> extends 
AbstractRxStage<T> {
                            @Parameter(NumberOfThreads.class) final int 
numThreads) {
     super(name);
     this.observer = observer;
-    if (numThreads <= 0)
+    if (numThreads <= 0) {
       throw new WakeRuntimeException(name + " numThreads " + numThreads + " is 
less than or equal to 0");
+    }
     tf = new DefaultThreadFactory(name);
     this.executor = Executors.newFixedThreadPool(numThreads, tf);
     this.completionExecutor = Executors.newSingleThreadExecutor(tf);

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/rx/impl/TimeoutSubject.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/rx/impl/TimeoutSubject.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/rx/impl/TimeoutSubject.java
index e8efd96..5d2d3c9 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/rx/impl/TimeoutSubject.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/rx/impl/TimeoutSubject.java
@@ -47,7 +47,9 @@ public class TimeoutSubject<T> implements Subject<T, T> {
           finishedCopy = finished;
           finished = true; // lock out the caller from putting event through 
now
         }
-        if (!finishedCopy) destination.onError(new 
TimeoutException("TimeoutSubject expired"));
+        if (!finishedCopy) {
+          destination.onError(new TimeoutException("TimeoutSubject expired"));
+        }
       }
     });
     this.timeBomb.start();

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/Time.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/Time.java 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/Time.java
index c6619bd..a174461 100644
--- a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/Time.java
+++ b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/Time.java
@@ -40,10 +40,18 @@ public abstract class Time implements Comparable<Time> {
 
   @Override
   public final int compareTo(Time o) {
-    if (this.timestamp < o.timestamp) return -1;
-    if (this.timestamp > o.timestamp) return 1;
-    if (this.hashCode() < o.hashCode()) return -1;
-    if (this.hashCode() > o.hashCode()) return 1;
+    if (this.timestamp < o.timestamp) {
+      return -1;
+    }
+    if (this.timestamp > o.timestamp) {
+      return 1;
+    }
+    if (this.hashCode() < o.hashCode()) {
+      return -1;
+    }
+    if (this.hashCode() > o.hashCode()) {
+      return 1;
+    }
     return 0;
   }
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/runtime/LogicalTimer.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/runtime/LogicalTimer.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/runtime/LogicalTimer.java
index 84b4c10..cc6bee9 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/runtime/LogicalTimer.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/runtime/LogicalTimer.java
@@ -41,7 +41,9 @@ public final class LogicalTimer implements Timer {
 
   @Override
   public boolean isReady(long time) {
-    if (this.current < time) this.current = time;
+    if (this.current < time) {
+      this.current = time;
+    }
     return true;
   }
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/44cea492/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/runtime/RuntimeClock.java
----------------------------------------------------------------------
diff --git 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/runtime/RuntimeClock.java
 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/runtime/RuntimeClock.java
index f4b97d4..6149db4 100644
--- 
a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/runtime/RuntimeClock.java
+++ 
b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/time/runtime/RuntimeClock.java
@@ -148,7 +148,9 @@ public final class RuntimeClock implements Clock {
   public final boolean isIdle() {
     synchronized (this.schedule) {
       for (Time t : this.schedule) {
-        if (t instanceof ClientAlarm) return false;
+        if (t instanceof ClientAlarm) {
+          return false;
+        }
       }
       return true;
     }
@@ -228,9 +230,12 @@ public final class RuntimeClock implements Clock {
             alarm.handle();
           } else {
             this.handlers.onNext(time);
-            if (time instanceof StopTime) break; // we're done.
+            if (time instanceof StopTime) {
+              break; // we're done.
+            }
           }
         } catch (InterruptedException e) {
+          // waiting interrupted - return to loop
         }
       }
       this.handlers.onNext(new RuntimeStop(this.timer.getCurrent()));

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