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Posted to commits@reef.apache.org by we...@apache.org on 2015/07/01 02:48:31 UTC

[1/2] incubator-reef git commit: [REEF-414]: Fix violations of checks in "Naming" category for private variables/methods

Repository: incubator-reef
Updated Branches:
  refs/heads/master 1ea52a7d5 -> 760e82e60


http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/MergingEventHandler.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/MergingEventHandler.java b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/MergingEventHandler.java
index 19169bf..8a99311 100644
--- a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/MergingEventHandler.java
+++ b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/MergingEventHandler.java
@@ -38,7 +38,7 @@ import java.util.logging.Logger;
 @Unit
 public final class MergingEventHandler<L, R> {
 
-  private static Logger LOG = Logger.getLogger(MergingEventHandler.class.getName());
+  private static final Logger LOG = Logger.getLogger(MergingEventHandler.class.getName());
   public final EventHandler<L> left = new Left();
   public final EventHandler<R> right = new Right();
   private final Object mutex = new Object();

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/StageManager.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/StageManager.java b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/StageManager.java
index f867ec1..a82e071 100644
--- a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/StageManager.java
+++ b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/impl/StageManager.java
@@ -34,7 +34,7 @@ public final class StageManager implements Stage {
 
   private static final Logger LOG = Logger.getLogger(StageManager.class.getName());
 
-  private static final StageManager instance = new StageManager();
+  private static final StageManager INSTANCE = new StageManager();
 
   private final List<Stage> stages = Collections.synchronizedList(new ArrayList<Stage>());
   private final AtomicBoolean closed = new AtomicBoolean(false);
@@ -58,7 +58,7 @@ public final class StageManager implements Stage {
   }
 
   public static StageManager instance() {
-    return instance;
+    return INSTANCE;
   }
 
   public void register(final Stage stage) {

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/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 63eec6b..a46a03b 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
@@ -37,7 +37,7 @@ import java.util.logging.Logger;
 
 public class WakeProfiler implements Aspect {
   private static final Logger LOG = Logger.getLogger(WakeProfiler.class.toString());
-  private final Map<Object, Vertex<?>> vertex_object = new MonotonicHashMap<>();
+  private final Map<Object, Vertex<?>> vertexObject = new MonotonicHashMap<>();
   private final Map<InjectionFuture<?>, Object> futures = new MonotonicHashMap<>();
   private final Map<Object, Stats> stats = new MonotonicHashMap<>();
 
@@ -51,11 +51,11 @@ public class WakeProfiler implements Aspect {
     if (t instanceof Set) {
       return (Vertex<T>) newSetVertex((Set<?>) t);
     } else {
-      Vertex<T> v = (Vertex<T>) vertex_object.get(t);
+      Vertex<T> v = (Vertex<T>) vertexObject.get(t);
       // Add dummy vertices for objects that were bound volatile.
       if (v == null) {
         v = new Vertex<>(t);
-        vertex_object.put(t, v);
+        vertexObject.put(t, v);
       }
       return v;
     }
@@ -68,26 +68,26 @@ public class WakeProfiler implements Aspect {
 
   @SuppressWarnings("unchecked")
   private <T> Vertex<?> newSetVertex(Set<T> s) {
-    if (vertex_object.containsKey(s)) {
-      return (Vertex<Set<T>>) vertex_object.get(s);
+    if (vertexObject.containsKey(s)) {
+      return (Vertex<Set<T>>) vertexObject.get(s);
     }
     if (s.size() > -1) {
       LOG.fine("new set of size " + s.size());
-      Vertex<?>[] s_args = new Vertex[s.size()];
+      Vertex<?>[] sArgs = new Vertex[s.size()];
       int k = 0;
       for (Object p : s) {
-        s_args[k] = getVertex(p);
+        sArgs[k] = getVertex(p);
         k++;
       }
-      Vertex<Set<T>> sv = new Vertex<>(s, null, s_args);
-      vertex_object.put(s, sv);
+      Vertex<Set<T>> sv = new Vertex<>(s, null, sArgs);
+      vertexObject.put(s, sv);
       return sv;
 //    } else if(s.size() == 1) {
     } else {
       Object p = s.iterator().next();
       Vertex<?> w = getVertex(p);
       // alias the singleton set to its member
-      vertex_object.put(s, w);
+      vertexObject.put(s, w);
       return w;
     }
 //    } else {
@@ -99,14 +99,14 @@ public class WakeProfiler implements Aspect {
   @Override
   public <T> T inject(ConstructorDef<T> constructorDef, Constructor<T> constructor, Object[] args) throws InvocationTargetException, IllegalAccessException, IllegalArgumentException, InstantiationException {
 //    LOG.info("inject" + constructor + "->" + args.length);
-    Vertex<?>[] v_args = new Vertex[args.length];
+    Vertex<?>[] vArgs = new Vertex[args.length];
     for (int i = 0; i < args.length; i++) {
       Object o = args[i];
       Vertex<?> v = getVertex(o);
       if (o instanceof Set) {
         LOG.fine("Got a set arg for " + constructorDef + " length " + ((Set<?>) o).size());
       }
-      v_args[i] = v;
+      vArgs[i] = v;
     }
 
     T ret;
@@ -156,8 +156,8 @@ public class WakeProfiler implements Aspect {
     } else {
       ret = constructor.newInstance(args);
     }
-    Vertex<T> v = new Vertex<T>(ret, constructorDef, v_args);
-    vertex_object.put(ret, v);
+    Vertex<T> v = new Vertex<T>(ret, constructorDef, vArgs);
+    vertexObject.put(ret, v);
     return ret;
   }
 
@@ -200,19 +200,19 @@ public class WakeProfiler implements Aspect {
 
   public String objectGraphToString() {
     List<Vertex<?>> vertices = new ArrayList<>();
-    Map<Vertex<?>, Integer> off_vertex = new MonotonicHashMap<>();
+    Map<Vertex<?>, Integer> offVertex = new MonotonicHashMap<>();
 
     StringBuffer sb = new StringBuffer("{\"nodes\":[\n");
 
     List<String> nodes = new ArrayList<String>();
     LinkedList<Vertex<?>> workQueue = new LinkedList<>();
-    for (Object o : vertex_object.keySet()) {
+    for (Object o : vertexObject.keySet()) {
       if (whitelist(o)) {
         workQueue.add(getVertex(o));
       }
     }
     for (Object o : futures.values()) {
-      if ((!vertex_object.containsKey(o)) && whitelist(o)) {
+      if ((!vertexObject.containsKey(o)) && whitelist(o)) {
         workQueue.add(getVertex(o));
       }
     }
@@ -250,7 +250,7 @@ public class WakeProfiler implements Aspect {
         s = removeEnhancements(o.getClass().getSimpleName());
       }
       if (s != null) {
-        off_vertex.put(v, vertices.size());
+        offVertex.put(v, vertices.size());
         vertices.add(v);
         if (tooltip == null) {
           nodes.add("{\"name\":\"" + jsonEscape(s) + "\"}");
@@ -269,19 +269,19 @@ public class WakeProfiler implements Aspect {
         LOG.fine("pointed to object " + w.getObject());
         if (w.getObject() instanceof InjectionFuture) {
           Vertex<?> futureTarget = getFuture((InjectionFuture<?>) w.getObject()); //futures.get(w.getObject());
-          Integer off = off_vertex.get(futureTarget);
+          Integer off = offVertex.get(futureTarget);
           LOG.fine("future target " + futureTarget + " off = " + off);
           if (off != null) {
-            links.add("{\"target\":" + off_vertex.get(v) + ",\"source\":" + off + ",\"value\":" + 1.0 + ",\"back\":true}");
+            links.add("{\"target\":" + offVertex.get(v) + ",\"source\":" + off + ",\"value\":" + 1.0 + ",\"back\":true}");
           }
         } else {
-          Integer off = off_vertex.get(w);
+          Integer off = offVertex.get(w);
           if (off != null) {
             Stats s = stats.get(w.getObject());
             if (s != null) {
-              links.add("{\"source\":" + off_vertex.get(v) + ",\"target\":" + off + ",\"value\":" + (s.messageCount.get() + 3.0) + "}");
+              links.add("{\"source\":" + offVertex.get(v) + ",\"target\":" + off + ",\"value\":" + (s.messageCount.get() + 3.0) + "}");
             } else {
-              links.add("{\"source\":" + off_vertex.get(v) + ",\"target\":" + off + ",\"value\":" + 1.0 + "}");
+              links.add("{\"source\":" + offVertex.get(v) + ",\"target\":" + off + ",\"value\":" + 1.0 + "}");
             }
           }
         }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/NetUtils.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/NetUtils.java b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/NetUtils.java
index f1c5542..c4a86d4 100644
--- a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/NetUtils.java
+++ b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/NetUtils.java
@@ -26,14 +26,14 @@ import org.apache.reef.wake.remote.address.LocalAddressProviderFactory;
  */
 @Deprecated
 public final class NetUtils {
-  private static final LocalAddressProvider localAddressProvider = LocalAddressProviderFactory.getInstance();
+  private static final LocalAddressProvider LOCAL_ADDRESS_PROVIDER = LocalAddressProviderFactory.getInstance();
 
   /**
    * @deprecated Use <code>org.apache.reef.wake.remote.address.LocalAddressProvider#getLocalAddress()</code> instead.
    */
   @Deprecated
   public static String getLocalAddress() {
-    return localAddressProvider.getLocalAddress();
+    return LOCAL_ADDRESS_PROVIDER.getLocalAddress();
   }
 
   /**

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/DefaultRemoteManagerImplementation.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/DefaultRemoteManagerImplementation.java b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/DefaultRemoteManagerImplementation.java
index b5b66d8..6dd7c98 100644
--- a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/DefaultRemoteManagerImplementation.java
+++ b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/remote/impl/DefaultRemoteManagerImplementation.java
@@ -47,7 +47,7 @@ public class DefaultRemoteManagerImplementation implements RemoteManager {
 
   private static final Logger LOG = Logger.getLogger(HandlerContainer.class.getName());
 
-  private static final AtomicInteger counter = new AtomicInteger(0);
+  private static final AtomicInteger COUNTER = new AtomicInteger(0);
 
   /**
    * The timeout used for the execute running in close().
@@ -128,7 +128,7 @@ public class DefaultRemoteManagerImplementation implements RemoteManager {
     StageManager.instance().register(this);
 
     LOG.log(Level.FINEST, "RemoteManager {0} instantiated id {1} counter {2} listening on {3}:{4}. Binding address provided by {5}",
-        new Object[]{this.name, this.myIdentifier, counter.incrementAndGet(),
+        new Object[]{this.name, this.myIdentifier, COUNTER.incrementAndGet(),
             this.transport.getLocalAddress().toString(),
             this.transport.getListeningPort(), localAddressProvider}
     );

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/AvroEvaluatorListSerializer.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/AvroEvaluatorListSerializer.java b/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/AvroEvaluatorListSerializer.java
index da614e0..476b976 100644
--- a/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/AvroEvaluatorListSerializer.java
+++ b/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/AvroEvaluatorListSerializer.java
@@ -50,18 +50,18 @@ public class AvroEvaluatorListSerializer implements EvaluatorListSerializer {
       final Map<String, EvaluatorDescriptor> evaluatorMap,
       final int totalEvaluators, final String startTime) {
 
-    final List<AvroEvaluatorEntry> EvaluatorEntities = new ArrayList<>();
+    final List<AvroEvaluatorEntry> evaluatorEntities = new ArrayList<>();
 
     for (final Map.Entry<String, EvaluatorDescriptor> entry : evaluatorMap.entrySet()) {
       final EvaluatorDescriptor descriptor = entry.getValue();
-      EvaluatorEntities.add(AvroEvaluatorEntry.newBuilder()
-          .setId(entry.getKey())
-          .setName(descriptor.getNodeDescriptor().getName())
-          .build());
+      evaluatorEntities.add(AvroEvaluatorEntry.newBuilder()
+              .setId(entry.getKey())
+              .setName(descriptor.getNodeDescriptor().getName())
+              .build());
     }
 
     return AvroEvaluatorList.newBuilder()
-        .setEvaluators(EvaluatorEntities)
+        .setEvaluators(evaluatorEntities)
         .setTotal(totalEvaluators)
         .setStartTime(startTime != null ? startTime : new Date().toString())
         .build();

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/HttpServerReefEventHandler.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/HttpServerReefEventHandler.java b/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/HttpServerReefEventHandler.java
index 5bb62a5..e3447c5 100644
--- a/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/HttpServerReefEventHandler.java
+++ b/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/HttpServerReefEventHandler.java
@@ -49,7 +49,7 @@ public final class HttpServerReefEventHandler implements HttpHandler {
 
   private static final Logger LOG = Logger.getLogger(HttpServerReefEventHandler.class.getName());
 
-  private static final String ver = "v1";
+  private static final String VER = "v1";
   private final String driverStdoutFile;
   private final String driverStderrFile;
 
@@ -122,7 +122,7 @@ public final class HttpServerReefEventHandler implements HttpHandler {
       case "evaluators": {
         final String queryStr = parsedHttpRequest.getQueryString();
         if (queryStr == null || queryStr.isEmpty()) {
-          if (version.equals(ver)) {
+          if (version.equals(VER)) {
             writeEvaluatorsJsonOutput(response);
           } else {
             writeEvaluatorsWebOutput(response);
@@ -133,7 +133,7 @@ public final class HttpServerReefEventHandler implements HttpHandler {
         break;
       }
       case "driver":
-        if (version.equals(ver)) {
+        if (version.equals(VER)) {
           writeDriverJsonInformation(response);
         } else {
           writeDriverWebInformation(response);
@@ -199,7 +199,7 @@ public final class HttpServerReefEventHandler implements HttpHandler {
 
       switch (queryTarget) {
         case "id":
-          if (version.equals(ver)) {
+          if (version.equals(VER)) {
             writeEvaluatorInfoJsonOutput(response, entry.getValue());
           } else {
             writeEvaluatorInfoWebOutput(response, entry.getValue());

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/ReefEventStateManager.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/ReefEventStateManager.java b/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/ReefEventStateManager.java
index d19c153..fc8b859 100644
--- a/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/ReefEventStateManager.java
+++ b/lang/java/reef-webserver/src/main/java/org/apache/reef/webserver/ReefEventStateManager.java
@@ -48,9 +48,9 @@ public final class ReefEventStateManager {
   private static final Logger LOG = Logger.getLogger(ReefEventStateManager.class.getName());
 
   /**
-   * date format.
+   * Date format.
    */
-  private static final Format format = new SimpleDateFormat("yyyy MM dd HH:mm:ss");
+  private static final Format FORMAT = new SimpleDateFormat("yyyy MM dd HH:mm:ss");
 
   /**
    * Map of evaluators.
@@ -125,7 +125,7 @@ public final class ReefEventStateManager {
    */
   private String convertTime(final long time) {
     final Date date = new Date(time);
-    return format.format(date).toString();
+    return FORMAT.format(date).toString();
   }
 
   /**


[2/2] incubator-reef git commit: [REEF-414]: Fix violations of checks in "Naming" category for private variables/methods

Posted by we...@apache.org.
[REEF-414]: Fix violations of checks in "Naming" category for private variables/methods

This addressed the issue by renaming private variables accordingly to
checkstyle suggestions

JIRA:
  [REEF-414](https://issues.apache.org/jira/browse/REEF-414)

Pull Request:
  This closes #252


Project: http://git-wip-us.apache.org/repos/asf/incubator-reef/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-reef/commit/760e82e6
Tree: http://git-wip-us.apache.org/repos/asf/incubator-reef/tree/760e82e6
Diff: http://git-wip-us.apache.org/repos/asf/incubator-reef/diff/760e82e6

Branch: refs/heads/master
Commit: 760e82e602b36986d13720f2acadf997677124f5
Parents: 1ea52a7
Author: Mariia Mykhailova <mi...@gmail.com>
Authored: Fri Jun 26 16:01:32 2015 -0700
Committer: Markus Weimer <we...@apache.org>
Committed: Tue Jun 30 17:37:46 2015 -0700

----------------------------------------------------------------------
 .../common/client/JobStatusMessageHandler.java  |  2 +-
 .../driver/catalog/ResourceCatalogImpl.java     | 12 ++---
 .../evaluator/EvaluatorControlHandler.java      |  4 +-
 .../common/evaluator/task/TaskRuntime.java      | 32 +++++++-------
 .../java/org/apache/reef/util/MemoryUtils.java  |  6 +--
 .../org/apache/reef/util/SingletonAsserter.java |  4 +-
 .../src/main/resources/checkstyle.xml           | 16 ++-----
 .../reef/examples/group/bgd/SlaveTask.java      |  8 ++--
 .../bgd/loss/WeightedLogisticLossFunction.java  |  4 +-
 .../network/group/impl/GroupChangesCodec.java   |  6 +--
 .../network/group/impl/driver/FlatTopology.java |  2 +-
 .../group/impl/driver/GroupCommDriverImpl.java  |  4 +-
 .../group/impl/driver/GroupCommService.java     |  6 +--
 .../network/group/impl/driver/TaskNodeImpl.java | 14 +++---
 .../impl/driver/TopologyUpdateWaitHandler.java  |  2 +-
 .../network/group/impl/driver/TreeTopology.java |  2 +-
 .../impl/task/CommunicationGroupClientImpl.java |  4 +-
 .../group/impl/task/OperatorTopologyImpl.java   | 10 ++---
 .../impl/task/OperatorTopologyStructImpl.java   | 10 ++---
 .../group/impl/utils/ConcurrentCountingMap.java |  3 +-
 .../network/group/impl/utils/CountingMap.java   |  3 +-
 .../reef/io/network/group/impl/utils/Utils.java |  2 +-
 .../reef/io/network/impl/NetworkService.java    | 12 ++---
 .../org/apache/reef/io/network/util/Utils.java  |  6 +--
 .../client/yarnrest/ApplicationResponse.java    |  2 +-
 .../client/yarnrest/ApplicationState.java       |  2 +-
 .../runtime/local/process/RunnableProcess.java  |  4 +-
 .../driver/MesosResourceReleaseHandler.java     |  8 ++--
 .../driver/MesosResourceRequestHandler.java     |  8 ++--
 .../mesos/driver/MesosRuntimeStartHandler.java  |  8 ++--
 .../mesos/driver/MesosRuntimeStopHandler.java   |  8 ++--
 .../runtime/mesos/driver/REEFScheduler.java     |  4 +-
 .../runtime/mesos/evaluator/REEFExecutor.java   |  4 +-
 .../yarn/driver/YarnResourceRequestHandler.java |  4 +-
 .../formats/ConfigurationModuleBuilder.java     |  8 ++--
 .../implementation/java/ClassHierarchyImpl.java |  4 +-
 .../tang/implementation/java/InjectorImpl.java  | 24 +++++-----
 .../implementation/java/JavaNodeFactory.java    | 32 +++++++-------
 .../protobuf/ProtocolBufferClassHierarchy.java  | 17 --------
 .../reef/tang/util/ReflectionUtilities.java     | 16 +++----
 .../java/org/apache/reef/tang/util/Tint.java    | 42 +++++++++---------
 .../org/apache/reef/wake/IdentifierParser.java  |  6 +--
 .../reef/wake/impl/DefaultThreadFactory.java    |  6 +--
 .../reef/wake/impl/MergingEventHandler.java     |  2 +-
 .../org/apache/reef/wake/impl/StageManager.java |  4 +-
 .../apache/reef/wake/profiler/WakeProfiler.java | 46 ++++++++++----------
 .../org/apache/reef/wake/remote/NetUtils.java   |  4 +-
 .../DefaultRemoteManagerImplementation.java     |  4 +-
 .../webserver/AvroEvaluatorListSerializer.java  | 12 ++---
 .../webserver/HttpServerReefEventHandler.java   |  8 ++--
 .../reef/webserver/ReefEventStateManager.java   |  6 +--
 51 files changed, 219 insertions(+), 248 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/client/JobStatusMessageHandler.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/client/JobStatusMessageHandler.java b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/client/JobStatusMessageHandler.java
index 78ddeb9..3496812 100644
--- a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/client/JobStatusMessageHandler.java
+++ b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/client/JobStatusMessageHandler.java
@@ -34,7 +34,7 @@ import java.util.logging.Logger;
 @ClientSide
 @Private
 final class JobStatusMessageHandler implements EventHandler<RemoteMessage<ReefServiceProtos.JobStatusProto>> {
-  private final Logger LOG = Logger.getLogger(JobStatusMessageHandler.class.getName());
+  private static final Logger LOG = Logger.getLogger(JobStatusMessageHandler.class.getName());
   private final RunningJobs runningJobs;
 
   @Inject

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/catalog/ResourceCatalogImpl.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/catalog/ResourceCatalogImpl.java b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/catalog/ResourceCatalogImpl.java
index 77f3762..18a08e7 100644
--- a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/catalog/ResourceCatalogImpl.java
+++ b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/catalog/ResourceCatalogImpl.java
@@ -69,18 +69,18 @@ public final class ResourceCatalogImpl implements ResourceCatalog {
   }
 
   public synchronized void handle(final NodeDescriptorEvent node) {
-    final String rack_name = node.getRackName().orElse(DEFAULT_RACK);
+    final String rackName = node.getRackName().orElse(DEFAULT_RACK);
 
     LOG.log(Level.FINEST, "Catalog new node: id[{0}], rack[{1}], host[{2}], port[{3}], memory[{4}]",
-        new Object[]{node.getIdentifier(), rack_name, node.getHostName(), node.getPort(),
+        new Object[]{node.getIdentifier(), rackName, node.getHostName(), node.getPort(),
             node.getMemorySize()}
     );
 
-    if (!this.racks.containsKey(rack_name)) {
-      final RackDescriptorImpl rack = new RackDescriptorImpl(rack_name);
-      this.racks.put(rack_name, rack);
+    if (!this.racks.containsKey(rackName)) {
+      final RackDescriptorImpl rack = new RackDescriptorImpl(rackName);
+      this.racks.put(rackName, rack);
     }
-    final RackDescriptorImpl rack = this.racks.get(rack_name);
+    final RackDescriptorImpl rack = this.racks.get(rackName);
     final InetSocketAddress address = new InetSocketAddress(node.getHostName(), node.getPort());
     final NodeDescriptorImpl nodeDescriptor = new NodeDescriptorImpl(node.getIdentifier(), address, rack, node.getMemorySize());
     this.nodes.put(nodeDescriptor.getId(), nodeDescriptor);

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/evaluator/EvaluatorControlHandler.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/evaluator/EvaluatorControlHandler.java b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/evaluator/EvaluatorControlHandler.java
index e648b87..979690f 100644
--- a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/evaluator/EvaluatorControlHandler.java
+++ b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/driver/evaluator/EvaluatorControlHandler.java
@@ -37,7 +37,7 @@ import java.util.logging.Logger;
 @Private
 public final class EvaluatorControlHandler {
 
-  private static Logger LOG = Logger.getLogger(EvaluatorControlHandler.class.getName());
+  private static final Logger LOG = Logger.getLogger(EvaluatorControlHandler.class.getName());
   private final EvaluatorStatusManager stateManager;
   private final RemoteManager remoteManager;
   private final String evaluatorId;
@@ -70,7 +70,7 @@ public final class EvaluatorControlHandler {
     }
     if (!this.stateManager.isRunning()) {
       LOG.log(Level.WARNING, "Trying to send an EvaluatorControlProto to Evaluator [{0}] that is in state [{1}], not [RUNNING]. The control message was: {2}",
-          new Object[]{this.evaluatorId, this.stateManager, evaluatorControlProto});
+              new Object[]{this.evaluatorId, this.stateManager, evaluatorControlProto});
       return;
     }
     this.wrapped.get().onNext(evaluatorControlProto);

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/evaluator/task/TaskRuntime.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/evaluator/task/TaskRuntime.java b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/evaluator/task/TaskRuntime.java
index de63d60..2a80bb1 100644
--- a/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/evaluator/task/TaskRuntime.java
+++ b/lang/java/reef-common/src/main/java/org/apache/reef/runtime/common/evaluator/task/TaskRuntime.java
@@ -52,9 +52,9 @@ public final class TaskRuntime implements Runnable {
    */
   private final Task task;
 
-  private final InjectionFuture<EventHandler<CloseEvent>> f_closeHandler;
-  private final InjectionFuture<EventHandler<SuspendEvent>> f_suspendHandler;
-  private final InjectionFuture<EventHandler<DriverMessage>> f_messageHandler;
+  private final InjectionFuture<EventHandler<CloseEvent>> fCloseHandler;
+  private final InjectionFuture<EventHandler<SuspendEvent>> fSuspendHandler;
+  private final InjectionFuture<EventHandler<DriverMessage>> fMessageHandler;
   private final TaskLifeCycleHandlers taskLifeCycleHandlers;
 
   /**
@@ -75,11 +75,11 @@ public final class TaskRuntime implements Runnable {
       final HeartBeatManager heartBeatManager,
       final Task task,
       final TaskStatus currentStatus,
-      @Parameter(TaskConfigurationOptions.CloseHandler.class) final InjectionFuture<EventHandler<CloseEvent>> f_closeHandler,
-      @Parameter(TaskConfigurationOptions.SuspendHandler.class) final InjectionFuture<EventHandler<SuspendEvent>> f_suspendHandler,
-      @Parameter(TaskConfigurationOptions.MessageHandler.class) final InjectionFuture<EventHandler<DriverMessage>> f_messageHandler,
+      @Parameter(TaskConfigurationOptions.CloseHandler.class) final InjectionFuture<EventHandler<CloseEvent>> fCloseHandler,
+      @Parameter(TaskConfigurationOptions.SuspendHandler.class) final InjectionFuture<EventHandler<SuspendEvent>> fSuspendHandler,
+      @Parameter(TaskConfigurationOptions.MessageHandler.class) final InjectionFuture<EventHandler<DriverMessage>> fMessageHandler,
       final TaskLifeCycleHandlers taskLifeCycleHandlers) {
-    this(heartBeatManager, task, currentStatus, f_closeHandler, f_suspendHandler, f_messageHandler, null, taskLifeCycleHandlers);
+    this(heartBeatManager, task, currentStatus, fCloseHandler, fSuspendHandler, fMessageHandler, null, taskLifeCycleHandlers);
   }
 
   // TODO: Document
@@ -88,9 +88,9 @@ public final class TaskRuntime implements Runnable {
       final HeartBeatManager heartBeatManager,
       final Task task,
       final TaskStatus currentStatus,
-      @Parameter(TaskConfigurationOptions.CloseHandler.class) final InjectionFuture<EventHandler<CloseEvent>> f_closeHandler,
-      @Parameter(TaskConfigurationOptions.SuspendHandler.class) final InjectionFuture<EventHandler<SuspendEvent>> f_suspendHandler,
-      @Parameter(TaskConfigurationOptions.MessageHandler.class) final InjectionFuture<EventHandler<DriverMessage>> f_messageHandler,
+      @Parameter(TaskConfigurationOptions.CloseHandler.class) final InjectionFuture<EventHandler<CloseEvent>> fCloseHandler,
+      @Parameter(TaskConfigurationOptions.SuspendHandler.class) final InjectionFuture<EventHandler<SuspendEvent>> fSuspendHandler,
+      @Parameter(TaskConfigurationOptions.MessageHandler.class) final InjectionFuture<EventHandler<DriverMessage>> fMessageHandler,
       @Parameter(TaskConfigurationOptions.Memento.class) final String memento,
       final TaskLifeCycleHandlers taskLifeCycleHandlers) {
 
@@ -101,9 +101,9 @@ public final class TaskRuntime implements Runnable {
     this.memento = null == memento ? Optional.<byte[]>empty() :
         Optional.of(DatatypeConverter.parseBase64Binary(memento));
 
-    this.f_closeHandler = f_closeHandler;
-    this.f_suspendHandler = f_suspendHandler;
-    this.f_messageHandler = f_messageHandler;
+    this.fCloseHandler = fCloseHandler;
+    this.fSuspendHandler = fSuspendHandler;
+    this.fMessageHandler = fMessageHandler;
 
     this.currentStatus = currentStatus;
   }
@@ -283,7 +283,7 @@ public final class TaskRuntime implements Runnable {
   private void closeTask(final byte[] message) throws TaskCloseHandlerFailure {
     LOG.log(Level.FINEST, "Invoking close handler.");
     try {
-      this.f_closeHandler.get().onNext(new CloseEventImpl(message));
+      this.fCloseHandler.get().onNext(new CloseEventImpl(message));
     } catch (final Throwable throwable) {
       throw new TaskCloseHandlerFailure(throwable);
     }
@@ -294,7 +294,7 @@ public final class TaskRuntime implements Runnable {
    */
   private void deliverMessageToTask(final byte[] message) throws TaskMessageHandlerFailure {
     try {
-      this.f_messageHandler.get().onNext(new DriverMessageImpl(message));
+      this.fMessageHandler.get().onNext(new DriverMessageImpl(message));
     } catch (final Throwable throwable) {
       throw new TaskMessageHandlerFailure(throwable);
     }
@@ -305,7 +305,7 @@ public final class TaskRuntime implements Runnable {
    */
   private void suspendTask(final byte[] message) throws TaskSuspendHandlerFailure {
     try {
-      this.f_suspendHandler.get().onNext(new SuspendEventImpl(message));
+      this.fSuspendHandler.get().onNext(new SuspendEventImpl(message));
     } catch (final Throwable throwable) {
       throw new TaskSuspendHandlerFailure(throwable);
     }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/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 3e83319..981e8c7 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
@@ -29,7 +29,7 @@ import java.util.List;
  */
 public final class MemoryUtils {
 
-  private static final int MBs = 1024 * 1024;
+  private static final int MBS = 1024 * 1024;
 
   private MemoryUtils() {
   }
@@ -61,7 +61,7 @@ public final class MemoryUtils {
     final List<MemoryPoolMXBean> memoryPoolMXBeans = ManagementFactory.getMemoryPoolMXBeans();
     for (final MemoryPoolMXBean bean : memoryPoolMXBeans) {
       if (bean.getName().toLowerCase().indexOf(name) != -1) {
-        return bean.getUsage().getUsed() / MBs;
+        return bean.getUsage().getUsed() / MBS;
       }
     }
     return 0;
@@ -83,7 +83,7 @@ public final class MemoryUtils {
     final List<MemoryPoolMXBean> memoryPoolMXBeans = ManagementFactory.getMemoryPoolMXBeans();
     for (final MemoryPoolMXBean bean : memoryPoolMXBeans) {
       if (bean.getName().toLowerCase().indexOf(name) != -1) {
-        return bean.getPeakUsage().getUsed() / MBs;
+        return bean.getPeakUsage().getUsed() / MBS;
       }
     }
     return 0;

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-common/src/main/java/org/apache/reef/util/SingletonAsserter.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-common/src/main/java/org/apache/reef/util/SingletonAsserter.java b/lang/java/reef-common/src/main/java/org/apache/reef/util/SingletonAsserter.java
index 14e4b4e..5c6d0a9 100644
--- a/lang/java/reef-common/src/main/java/org/apache/reef/util/SingletonAsserter.java
+++ b/lang/java/reef-common/src/main/java/org/apache/reef/util/SingletonAsserter.java
@@ -27,7 +27,7 @@ import java.util.Set;
  */
 public final class SingletonAsserter {
 
-  private static final Set<Class> classes = Collections.synchronizedSet(new HashSet<Class>());
+  private static final Set<Class> CLASSES = Collections.synchronizedSet(new HashSet<Class>());
 
   /**
    * This class operates purely in static mode.
@@ -36,6 +36,6 @@ public final class SingletonAsserter {
   }
 
   public static boolean assertSingleton(final Class clazz) {
-    return classes.add(clazz);
+    return CLASSES.add(clazz);
   }
 }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/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 027d87e..63d7e52 100644
--- a/lang/java/reef-common/src/main/resources/checkstyle.xml
+++ b/lang/java/reef-common/src/main/resources/checkstyle.xml
@@ -92,22 +92,14 @@
         <module name="ConstantName">
             <property name="severity" value="warning"/>
         </module>
-        <module name="LocalFinalVariableName">
-            <property name="severity" value="warning"/>
-        </module>
-        <module name="LocalVariableName">
-            <property name="severity" value="warning"/>
-        </module>
-        <module name="MemberName">
-            <property name="severity" value="warning"/>
-        </module>
+        <module name="LocalFinalVariableName"/>
+        <module name="LocalVariableName"/>
+        <module name="MemberName"/>
         <module name="MethodName">
             <property name="severity" value="warning"/>
         </module>
         <module name="PackageName"/>
-        <module name="ParameterName">
-            <property name="severity" value="warning"/>
-        </module>
+        <module name="ParameterName"/>
         <module name="StaticVariableName">
             <property name="severity" value="warning"/>
         </module>

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/bgd/SlaveTask.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/bgd/SlaveTask.java b/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/bgd/SlaveTask.java
index 9d753e1..1aea74d 100644
--- a/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/bgd/SlaveTask.java
+++ b/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/bgd/SlaveTask.java
@@ -42,7 +42,7 @@ public class SlaveTask implements Task {
 
   private static final Logger LOG = Logger.getLogger(SlaveTask.class.getName());
 
-  private final double FAILURE_PROB;
+  private final double failureProb;
 
   private final CommunicationGroupClient communicationGroup;
   private final Broadcast.Receiver<ControlMessages> controlMessageBroadcaster;
@@ -70,8 +70,8 @@ public class SlaveTask implements Task {
 
     this.dataSet = dataSet;
     this.lossFunction = lossFunction;
-    this.FAILURE_PROB = pFailure;
-    LOG.info("Using pFailure=" + this.FAILURE_PROB);
+    this.failureProb = pFailure;
+    LOG.info("Using pFailure=" + this.failureProb);
     this.ts = ts;
 
     this.communicationGroup = groupCommClient.getCommunicationGroup(AllCommunicationGroup.class);
@@ -141,7 +141,7 @@ public class SlaveTask implements Task {
   }
 
   private void failPerhaps() {
-    if (Math.random() < FAILURE_PROB) {
+    if (Math.random() < failureProb) {
       throw new RuntimeException("Simulated Failure");
     }
   }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/bgd/loss/WeightedLogisticLossFunction.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/bgd/loss/WeightedLogisticLossFunction.java b/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/bgd/loss/WeightedLogisticLossFunction.java
index 7d54acd..1766441 100644
--- a/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/bgd/loss/WeightedLogisticLossFunction.java
+++ b/lang/java/reef-examples/src/main/java/org/apache/reef/examples/group/bgd/loss/WeightedLogisticLossFunction.java
@@ -60,8 +60,8 @@ public final class WeightedLogisticLossFunction implements LossFunction {
     if (predictedTimesLabel >= 0) {
       probability = 1 / (1 + Math.exp(-predictedTimesLabel));
     } else {
-      final double ExpVal = Math.exp(predictedTimesLabel);
-      probability = ExpVal / (1 + ExpVal);
+      final double expVal = Math.exp(predictedTimesLabel);
+      probability = expVal / (1 + expVal);
     }
 
     return (probability - 1) * y * weight;

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/GroupChangesCodec.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/GroupChangesCodec.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/GroupChangesCodec.java
index 946d5d2..e7f2a36 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/GroupChangesCodec.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/GroupChangesCodec.java
@@ -26,6 +26,7 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 public class GroupChangesCodec implements Codec<GroupChanges> {
+  private static final Logger LOG = Logger.getLogger(GroupChangesCodec.class.getName());
 
   @Inject
   public GroupChangesCodec() {
@@ -56,14 +57,11 @@ public class GroupChangesCodec implements Codec<GroupChanges> {
   }
 
   private static void test(final GroupChanges changes, final GroupChanges changes1) {
-
-    final Logger LOG = Logger.getLogger(GroupChangesCodec.class.getName());
-
     final boolean c1 = changes.exist();
     final boolean c2 = changes1.exist();
 
     if (c1 != c2) {
-      LOG.log(Level.SEVERE, "Something is wrong: {0} != {1}", new Object[] {c1, c2});
+      LOG.log(Level.SEVERE, "Something is wrong: {0} != {1}", new Object[]{c1, c2});
     } else {
       LOG.log(Level.INFO, "Codec is fine");
     }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/FlatTopology.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/FlatTopology.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/FlatTopology.java
index 98f3008..497d032 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/FlatTopology.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/FlatTopology.java
@@ -280,7 +280,7 @@ public class FlatTopology implements Topology {
     for (final TaskNode node : toBeUpdatedNodes) {
       node.updatingTopology();
       senderStage.onNext(Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.UpdateTopology, driverId, 0, node.getTaskId(),
-          node.getVersion(), Utils.EmptyByteArr));
+          node.getVersion(), Utils.EMPTY_BYTE_ARR));
     }
     nodeTopologyUpdateWaitStage.onNext(toBeUpdatedNodes);
   }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/GroupCommDriverImpl.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/GroupCommDriverImpl.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/GroupCommDriverImpl.java
index 4710c31..089bfb3 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/GroupCommDriverImpl.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/GroupCommDriverImpl.java
@@ -81,7 +81,7 @@ public class GroupCommDriverImpl implements GroupCommServiceDriver {
   /**
    * TANG instance.
    */
-  private static final Tang tang = Tang.Factory.getTang();
+  private static final Tang TANG = Tang.Factory.getTang();
 
   private final AtomicInteger contextIds = new AtomicInteger(0);
 
@@ -256,7 +256,7 @@ public class GroupCommDriverImpl implements GroupCommServiceDriver {
             BindNSToTask.class)
         .set(ServiceConfiguration.ON_TASK_STOP,
             UnbindNSFromTask.class).build();
-    final Configuration retVal = tang.newConfigurationBuilder(serviceConfiguration)
+    final Configuration retVal = TANG.newConfigurationBuilder(serviceConfiguration)
         .bindNamedParameter(NetworkServiceParameters.NetworkServiceCodec.class,
             GroupCommunicationMessageCodec.class)
         .bindNamedParameter(NetworkServiceParameters.NetworkServiceHandler.class,

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/GroupCommService.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/GroupCommService.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/GroupCommService.java
index cbc57d9..60a43a3 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/GroupCommService.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/GroupCommService.java
@@ -46,7 +46,7 @@ import java.util.logging.Logger;
 public class GroupCommService {
 
   private static final Logger LOG = Logger.getLogger(GroupCommService.class.getName());
-  private static final ConfigurationSerializer confSer = new AvroConfigurationSerializer();
+  private static final ConfigurationSerializer CONF_SER = new AvroConfigurationSerializer();
 
   private final GroupCommServiceDriver groupCommDriver;
 
@@ -63,7 +63,7 @@ public class GroupCommService {
     jcb.bindSetEntry(ServiceEvaluatorFailedHandlers.class, FailedEvaluatorHandler.class);
     jcb.bindNamedParameter(EvaluatorDispatcherThreads.class, "1");
     final Configuration retVal = jcb.build();
-    LOG.exiting("GroupCommService", "getConfiguration", confSer.toString(retVal));
+    LOG.exiting("GroupCommService", "getConfiguration", CONF_SER.toString(retVal));
     return retVal;
   }
 
@@ -72,7 +72,7 @@ public class GroupCommService {
     final Configuration baseConf = getConfiguration();
     final Configuration retConf = Tang.Factory.getTang().newConfigurationBuilder(baseConf)
         .bindNamedParameter(TreeTopologyFanOut.class, Integer.toString(fanOut)).build();
-    LOG.exiting("GroupCommService", "getConfiguration", confSer.toString(retConf));
+    LOG.exiting("GroupCommService", "getConfiguration", CONF_SER.toString(retConf));
     return retConf;
   }
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TaskNodeImpl.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TaskNodeImpl.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TaskNodeImpl.java
index 02ebd98..1589bd7 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TaskNodeImpl.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TaskNodeImpl.java
@@ -137,7 +137,7 @@ public class TaskNodeImpl implements TaskNode {
     if (parent != null && parent.isRunning()) {
       final GroupCommunicationMessage gcm = Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.ParentAdd, parent.getTaskId(),
           parent.getVersion(), taskId,
-          version, Utils.EmptyByteArr);
+          version, Utils.EMPTY_BYTE_ARR);
       taskNodeStatus.expectAckFor(gcm.getType(), gcm.getSrcid());
       senderStage.onNext(gcm);
       parent.onChildRunning(taskId);
@@ -148,7 +148,7 @@ public class TaskNodeImpl implements TaskNode {
       if (child.isRunning()) {
         final GroupCommunicationMessage gcm = Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.ChildAdd, child.getTaskId(),
             child.getVersion(), taskId, version,
-            Utils.EmptyByteArr);
+            Utils.EMPTY_BYTE_ARR);
         taskNodeStatus.expectAckFor(gcm.getType(), gcm.getSrcid());
         senderStage.onNext(gcm);
         child.onParentRunning();
@@ -169,7 +169,7 @@ public class TaskNodeImpl implements TaskNode {
       final String parentTaskId = parent.getTaskId();
       final GroupCommunicationMessage gcm = Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.ParentAdd, parentTaskId,
           parentVersion, taskId, version.get(),
-          Utils.EmptyByteArr);
+          Utils.EMPTY_BYTE_ARR);
       taskNodeStatus.expectAckFor(gcm.getType(), gcm.getSrcid());
       senderStage.onNext(gcm);
     } else {
@@ -188,7 +188,7 @@ public class TaskNodeImpl implements TaskNode {
       taskNodeStatus.updateFailureOf(parent.getTaskId());
       final GroupCommunicationMessage gcm = Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.ParentDead, parentTaskId,
           parentVersion, taskId, version.get(),
-          Utils.EmptyByteArr);
+          Utils.EMPTY_BYTE_ARR);
       taskNodeStatus.expectAckFor(gcm.getType(), gcm.getSrcid());
       senderStage.onNext(gcm);
     } else {
@@ -205,7 +205,7 @@ public class TaskNodeImpl implements TaskNode {
       final int childVersion = childTask.getVersion();
       final GroupCommunicationMessage gcm = Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.ChildAdd, childId,
           childVersion, taskId, version.get(),
-          Utils.EmptyByteArr);
+          Utils.EMPTY_BYTE_ARR);
       taskNodeStatus.expectAckFor(gcm.getType(), gcm.getSrcid());
       senderStage.onNext(gcm);
     } else {
@@ -225,7 +225,7 @@ public class TaskNodeImpl implements TaskNode {
       taskNodeStatus.updateFailureOf(childId);
       final GroupCommunicationMessage gcm = Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.ChildDead, childId,
           childVersion, taskId, version.get(),
-          Utils.EmptyByteArr);
+          Utils.EMPTY_BYTE_ARR);
       taskNodeStatus.expectAckFor(gcm.getType(), gcm.getSrcid());
       senderStage.onNext(gcm);
     } else {
@@ -328,7 +328,7 @@ public class TaskNodeImpl implements TaskNode {
     LOG.entering("TaskNodeImpl", "sendTopoSetupMsg", getQualifiedName() + taskId);
     LOG.fine(getQualifiedName() + "is an active participant in the topology");
     senderStage.onNext(Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.TopologySetup, driverId, 0, taskId,
-        version.get(), Utils.EmptyByteArr));
+        version.get(), Utils.EMPTY_BYTE_ARR));
     taskNodeStatus.onTopologySetupMessageSent();
     final boolean sentAlready = !topoSetupSent.compareAndSet(false, true);
     if (sentAlready) {

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TopologyUpdateWaitHandler.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TopologyUpdateWaitHandler.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TopologyUpdateWaitHandler.java
index 1a5c48f..ad3e385 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TopologyUpdateWaitHandler.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TopologyUpdateWaitHandler.java
@@ -87,7 +87,7 @@ public class TopologyUpdateWaitHandler implements EventHandler<List<TaskNode>> {
     LOG.fine(qualifiedName + "All affected parts of the topology are in TopologyUpdate phase. Will send a note to ("
         + dstId + "," + dstVersion + ")");
     senderStage.onNext(Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.TopologyUpdated, driverId, driverVersion, dstId,
-        dstVersion, Utils.EmptyByteArr));
+        dstVersion, Utils.EMPTY_BYTE_ARR));
     LOG.exiting("TopologyUpdateWaitHandler", "onNext", qualifiedName);
   }
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TreeTopology.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TreeTopology.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TreeTopology.java
index df700d1..780a02d 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TreeTopology.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/driver/TreeTopology.java
@@ -313,7 +313,7 @@ public class TreeTopology implements Topology {
       node.updatingTopology();
       LOG.fine(getQualifiedName() + "Asking " + node + " to UpdateTopology");
       senderStage.onNext(Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.UpdateTopology, driverId, 0, node.getTaskId(),
-          node.getVersion(), Utils.EmptyByteArr));
+          node.getVersion(), Utils.EMPTY_BYTE_ARR));
     }
     nodeTopologyUpdateWaitStage.onNext(toBeUpdatedNodes);
     LOG.exiting("TreeTopology", "onUpdateTopology", getQualifiedName() + msg);

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/CommunicationGroupClientImpl.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/CommunicationGroupClientImpl.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/CommunicationGroupClientImpl.java
index a30bb8b..1eacb03 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/CommunicationGroupClientImpl.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/CommunicationGroupClientImpl.java
@@ -206,7 +206,7 @@ public class CommunicationGroupClientImpl implements CommunicationGroupServiceCl
       LOG.finest("Sending TopologyChanges msg to driver");
       try {
         sender.send(Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.TopologyChanges, taskId, op.getVersion(), driverId,
-            0, Utils.EmptyByteArr));
+            0, Utils.EMPTY_BYTE_ARR));
       } catch (final NetworkException e) {
         throw new RuntimeException("NetworkException while sending GetTopologyChanges", e);
       }
@@ -248,7 +248,7 @@ public class CommunicationGroupClientImpl implements CommunicationGroupServiceCl
       final Class<? extends Name<String>> operName = op.getOperName();
       try {
         sender.send(Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.UpdateTopology, taskId, op.getVersion(), driverId,
-            0, Utils.EmptyByteArr));
+            0, Utils.EMPTY_BYTE_ARR));
       } catch (final NetworkException e) {
         throw new RuntimeException("NetworkException while sending UpdateTopology", e);
       }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/OperatorTopologyImpl.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/OperatorTopologyImpl.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/OperatorTopologyImpl.java
index 9a4acd2..50faa82 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/OperatorTopologyImpl.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/OperatorTopologyImpl.java
@@ -325,23 +325,23 @@ public class OperatorTopologyImpl implements OperatorTopology {
         switch (msg.getType()) {
           case UpdateTopology:
             sender.send(Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.TopologySetup, selfId, this.version, driverId,
-                srcVersion, Utils.EmptyByteArr));
+                srcVersion, Utils.EMPTY_BYTE_ARR));
             break;
           case ParentAdd:
             sender.send(Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.ParentAdded, selfId, this.version, srcId,
-                srcVersion, Utils.EmptyByteArr), driverId);
+                srcVersion, Utils.EMPTY_BYTE_ARR), driverId);
             break;
           case ParentDead:
             sender.send(Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.ParentRemoved, selfId, this.version, srcId,
-                srcVersion, Utils.EmptyByteArr), driverId);
+                srcVersion, Utils.EMPTY_BYTE_ARR), driverId);
             break;
           case ChildAdd:
             sender.send(Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.ChildAdded, selfId, this.version, srcId,
-                srcVersion, Utils.EmptyByteArr), driverId);
+                srcVersion, Utils.EMPTY_BYTE_ARR), driverId);
             break;
           case ChildDead:
             sender.send(Utils.bldVersionedGCM(groupName, operName, ReefNetworkGroupCommProtos.GroupCommMessage.Type.ChildRemoved, selfId, this.version, srcId,
-                srcVersion, Utils.EmptyByteArr), driverId);
+                srcVersion, Utils.EMPTY_BYTE_ARR), driverId);
             break;
           default:
             throw new RuntimeException("Received a non control message for acknowledgement");

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/OperatorTopologyStructImpl.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/OperatorTopologyStructImpl.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/OperatorTopologyStructImpl.java
index a82124b..c0b3c10 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/OperatorTopologyStructImpl.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/task/OperatorTopologyStructImpl.java
@@ -178,7 +178,7 @@ public class OperatorTopologyStructImpl implements OperatorTopologyStruct {
       if (data.length > SMALL_MSG_LENGTH) {
         LOG.finest(getQualifiedName() + "Msg too big. Sending readiness to send " + msgType + " msg to " + nodeId);
         sender.send(Utils.bldVersionedGCM(groupName, operName, msgType, selfId, version, nodeId, node.getVersion(),
-            Utils.EmptyByteArr));
+            Utils.EMPTY_BYTE_ARR));
         final byte[] tmpVal = receiveFromNode(node, true);
         if (tmpVal != null) {
           LOG.finest(getQualifiedName() + "Got readiness to accept " + msgType + " msg from " + nodeId
@@ -265,12 +265,12 @@ public class OperatorTopologyStructImpl implements OperatorTopologyStruct {
     if (retVal != null && retVal.length == 0) {
       LOG.finest(getQualifiedName() + "Got msg that parent " + parent.getId()
           + " has large data and is ready to send data. Sending Ack to receive data");
-      sendToNode(Utils.EmptyByteArr, ReefNetworkGroupCommProtos.GroupCommMessage.Type.Broadcast, parent);
+      sendToNode(Utils.EMPTY_BYTE_ARR, ReefNetworkGroupCommProtos.GroupCommMessage.Type.Broadcast, parent);
       retVal = receiveFromNode(parent, true);
       if (retVal != null) {
         LOG.finest(getQualifiedName() + "Received large msg from Parent " + parent.getId()
             + ". Will return it after ACKing it");
-        sendToNode(Utils.EmptyByteArr, ReefNetworkGroupCommProtos.GroupCommMessage.Type.Broadcast, parent);
+        sendToNode(Utils.EMPTY_BYTE_ARR, ReefNetworkGroupCommProtos.GroupCommMessage.Type.Broadcast, parent);
       }
     }
     LOG.exiting("OperatorTopologyStructImpl", "recvFromParent",
@@ -299,12 +299,12 @@ public class OperatorTopologyStructImpl implements OperatorTopologyStruct {
       if (retVal != null && retVal.length == 0) {
         LOG.finest(getQualifiedName() + "Got msg that child " + child.getId()
             + " has large data and is ready to send data. Sending Ack to receive data");
-        sendToNode(Utils.EmptyByteArr, ReefNetworkGroupCommProtos.GroupCommMessage.Type.Reduce, child);
+        sendToNode(Utils.EMPTY_BYTE_ARR, ReefNetworkGroupCommProtos.GroupCommMessage.Type.Reduce, child);
         retVal = receiveFromNode(child, true);
         if (retVal != null) {
           LOG.finest(getQualifiedName() + "Received large msg from child " + child.getId()
               + ". Will reduce it after ACKing it");
-          sendToNode(Utils.EmptyByteArr, ReefNetworkGroupCommProtos.GroupCommMessage.Type.Reduce, child);
+          sendToNode(Utils.EMPTY_BYTE_ARR, ReefNetworkGroupCommProtos.GroupCommMessage.Type.Reduce, child);
         } else {
           LOG.finest(getQualifiedName() + "Will not reduce it");
         }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/ConcurrentCountingMap.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/ConcurrentCountingMap.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/ConcurrentCountingMap.java
index 988dad2..d484170 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/ConcurrentCountingMap.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/ConcurrentCountingMap.java
@@ -31,7 +31,7 @@ import java.util.logging.Logger;
  * Equivalent to Map<K,Map<V,Integer>>
  */
 public class ConcurrentCountingMap<K, V> {
-
+  private static final Logger LOG = Logger.getLogger(ConcurrentCountingMap.class.getName());
   private final ConcurrentMap<K, CountingMap<V>> map = new ConcurrentHashMap<>();
 
   public boolean remove(final K key, final V value) {
@@ -91,7 +91,6 @@ public class ConcurrentCountingMap<K, V> {
   }
 
   public static void main(final String[] args) {
-    final Logger LOG = Logger.getLogger(ConcurrentCountingMap.class.getName());
     final ConcurrentCountingMap<ReefNetworkGroupCommProtos.GroupCommMessage.Type, String> strMap = new ConcurrentCountingMap<>();
     LOG.log(Level.INFO, "OUT: {0}", strMap.isEmpty());
     strMap.add(ReefNetworkGroupCommProtos.GroupCommMessage.Type.ChildAdd, "ST0");

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/CountingMap.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/CountingMap.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/CountingMap.java
index 2742282..0ade442 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/CountingMap.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/CountingMap.java
@@ -31,7 +31,7 @@ import java.util.logging.Logger;
  * and removing key on count==0
  */
 public class CountingMap<L> {
-
+  private static final Logger LOG = Logger.getLogger(CountingMap.class.getName());
   private final Map<L, Integer> map = new HashMap<>();
 
   public boolean containsKey(final L value) {
@@ -78,7 +78,6 @@ public class CountingMap<L> {
   }
 
   public static void main(final String[] args) {
-    final Logger LOG = Logger.getLogger(CountingMap.class.getName());
     final CountingMap<String> strMap = new CountingMap<>();
     strMap.add("Hello");
     LOG.log(Level.INFO, "OUT: {0}", strMap);

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/Utils.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/Utils.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/Utils.java
index 64efcad..633c740 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/Utils.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/group/impl/utils/Utils.java
@@ -30,7 +30,7 @@ import java.util.Iterator;
  */
 public final class Utils {
 
-  public static final byte[] EmptyByteArr = new byte[0];
+  public static final byte[] EMPTY_BYTE_ARR = new byte[0];
 
   public static GroupCommunicationMessage bldVersionedGCM(final Class<? extends Name<String>> groupName,
                                                           final Class<? extends Name<String>> operName,

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/impl/NetworkService.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/impl/NetworkService.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/impl/NetworkService.java
index 6c02309..1e3887e 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/impl/NetworkService.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/impl/NetworkService.java
@@ -56,14 +56,14 @@ public final class NetworkService<T> implements Stage, ConnectionFactory<T> {
 
   private static final Logger LOG = Logger.getLogger(NetworkService.class.getName());
 
-  private static final int retryCount;
-  private static final int retryTimeout;
+  private static final int RETRY_COUNT;
+  private static final int RETRY_TIMEOUT;
 
   static {
     try {
       final Injector injector = Tang.Factory.getTang().newInjector();
-      retryCount = injector.getNamedInstance(NameResolverRetryCount.class);
-      retryTimeout = injector.getNamedInstance(NameResolverRetryTimeout.class);
+      RETRY_COUNT = injector.getNamedInstance(NameResolverRetryCount.class);
+      RETRY_TIMEOUT = injector.getNamedInstance(NameResolverRetryTimeout.class);
     } catch (final InjectionException ex) {
       final String msg = "Exception while trying to find default values for retryCount & Timeout";
       LOG.log(Level.SEVERE, msg, ex);
@@ -102,7 +102,7 @@ public final class NetworkService<T> implements Stage, ConnectionFactory<T> {
                         final EventHandler<Exception> exHandler,
                         final LocalAddressProvider localAddressProvider) {
     this(factory, nsPort, nameServerAddr, nameServerPort,
-        retryCount, retryTimeout, codec, tpFactory, recvHandler, exHandler, localAddressProvider);
+            RETRY_COUNT, RETRY_TIMEOUT, codec, tpFactory, recvHandler, exHandler, localAddressProvider);
   }
 
   /**
@@ -118,7 +118,7 @@ public final class NetworkService<T> implements Stage, ConnectionFactory<T> {
                         final EventHandler<Message<T>> recvHandler,
                         final EventHandler<Exception> exHandler) {
     this(factory, nsPort, nameServerAddr, nameServerPort,
-        retryCount, retryTimeout, codec, tpFactory, recvHandler, exHandler, LocalAddressProviderFactory.getInstance());
+            RETRY_COUNT, RETRY_TIMEOUT, codec, tpFactory, recvHandler, exHandler, LocalAddressProviderFactory.getInstance());
   }
 
   /**

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-io/src/main/java/org/apache/reef/io/network/util/Utils.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/util/Utils.java b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/util/Utils.java
index 84936ac..e0433a3 100644
--- a/lang/java/reef-io/src/main/java/org/apache/reef/io/network/util/Utils.java
+++ b/lang/java/reef-io/src/main/java/org/apache/reef/io/network/util/Utils.java
@@ -100,7 +100,7 @@ public final class Utils {
       final ReefNetworkGroupCommProtos.GroupCommMessage.Type msgType,
       final Identifier from, final Identifier to, final byte[]... elements) {
 
-    final ReefNetworkGroupCommProtos.GroupCommMessage.Builder GCMBuilder =
+    final ReefNetworkGroupCommProtos.GroupCommMessage.Builder gcmBuilder =
         ReefNetworkGroupCommProtos.GroupCommMessage.newBuilder()
             .setType(msgType)
             .setSrcid(from.toString())
@@ -111,10 +111,10 @@ public final class Utils {
 
     for (final byte[] element : elements) {
       bodyBuilder.setData(ByteString.copyFrom(element));
-      GCMBuilder.addMsgs(bodyBuilder.build());
+      gcmBuilder.addMsgs(bodyBuilder.build());
     }
 
-    return GCMBuilder.build();
+    return gcmBuilder.build();
   }
 
   /**

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/ApplicationResponse.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/ApplicationResponse.java b/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/ApplicationResponse.java
index 11d70fc..25041fd 100644
--- a/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/ApplicationResponse.java
+++ b/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/ApplicationResponse.java
@@ -34,7 +34,7 @@ import java.io.StringWriter;
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class ApplicationResponse {
 
-  private static String APPLICATION_RESPONSE = "applicationResponse";
+  private static final String APPLICATION_RESPONSE = "applicationResponse";
   private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
 
   private ApplicationState app;

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/ApplicationState.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/ApplicationState.java b/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/ApplicationState.java
index 670a711..6d42efe 100644
--- a/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/ApplicationState.java
+++ b/lang/java/reef-runtime-hdinsight/src/main/java/org/apache/reef/runtime/hdinsight/client/yarnrest/ApplicationState.java
@@ -35,7 +35,7 @@ import java.io.StringWriter;
 @JsonIgnoreProperties(ignoreUnknown = true)
 public final class ApplicationState {
 
-  private static String APPLICATION_STATE = "applicationState";
+  private static final String APPLICATION_STATE = "applicationState";
   private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
 
   private String progress;

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-runtime-local/src/main/java/org/apache/reef/runtime/local/process/RunnableProcess.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-runtime-local/src/main/java/org/apache/reef/runtime/local/process/RunnableProcess.java b/lang/java/reef-runtime-local/src/main/java/org/apache/reef/runtime/local/process/RunnableProcess.java
index 19a3d4a..b8008f0 100644
--- a/lang/java/reef-runtime-local/src/main/java/org/apache/reef/runtime/local/process/RunnableProcess.java
+++ b/lang/java/reef-runtime-local/src/main/java/org/apache/reef/runtime/local/process/RunnableProcess.java
@@ -233,8 +233,8 @@ public final class RunnableProcess implements Runnable {
    * @throws IOException if the file can't be read.
    */
   private long readPID() throws IOException {
-    final String PIDFileName = this.folder.getAbsolutePath() + "/" + PIDStoreStartHandler.PID_FILE_NAME;
-    try (final BufferedReader r = new BufferedReader(new FileReader(PIDFileName))) {
+    final String pidFileName = this.folder.getAbsolutePath() + "/" + PIDStoreStartHandler.PID_FILE_NAME;
+    try (final BufferedReader r = new BufferedReader(new FileReader(pidFileName))) {
       return Long.valueOf(r.readLine());
     }
   }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosResourceReleaseHandler.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosResourceReleaseHandler.java b/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosResourceReleaseHandler.java
index 35c9461..84e0a93 100644
--- a/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosResourceReleaseHandler.java
+++ b/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosResourceReleaseHandler.java
@@ -28,15 +28,15 @@ import javax.inject.Inject;
 @DriverSide
 @Private
 final class MesosResourceReleaseHandler implements ResourceReleaseHandler {
-  private final REEFScheduler REEFScheduler;
+  private final REEFScheduler reefScheduler;
 
   @Inject
-  MesosResourceReleaseHandler(final REEFScheduler REEFScheduler) {
-    this.REEFScheduler = REEFScheduler;
+  MesosResourceReleaseHandler(final REEFScheduler reefScheduler) {
+    this.reefScheduler = reefScheduler;
   }
 
   @Override
   public void onNext(final ResourceReleaseEvent resourceReleaseEvent) {
-    REEFScheduler.onResourceRelease(resourceReleaseEvent);
+    reefScheduler.onResourceRelease(resourceReleaseEvent);
   }
 }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosResourceRequestHandler.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosResourceRequestHandler.java b/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosResourceRequestHandler.java
index 6a594d6..47a996e 100644
--- a/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosResourceRequestHandler.java
+++ b/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosResourceRequestHandler.java
@@ -28,15 +28,15 @@ import javax.inject.Inject;
 @DriverSide
 @Private
 final class MesosResourceRequestHandler implements ResourceRequestHandler {
-  private final REEFScheduler REEFScheduler;
+  private final REEFScheduler reefScheduler;
 
   @Inject
-  MesosResourceRequestHandler(final REEFScheduler REEFScheduler) {
-    this.REEFScheduler = REEFScheduler;
+  MesosResourceRequestHandler(final REEFScheduler reefScheduler) {
+    this.reefScheduler = reefScheduler;
   }
 
   @Override
   public void onNext(final ResourceRequestEvent resourceRequestEvent) {
-    REEFScheduler.onResourceRequest(resourceRequestEvent);
+    reefScheduler.onResourceRequest(resourceRequestEvent);
   }
 }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosRuntimeStartHandler.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosRuntimeStartHandler.java b/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosRuntimeStartHandler.java
index 6ddf3b2..d442a4d 100644
--- a/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosRuntimeStartHandler.java
+++ b/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosRuntimeStartHandler.java
@@ -24,15 +24,15 @@ import org.apache.reef.wake.time.runtime.event.RuntimeStart;
 import javax.inject.Inject;
 
 final class MesosRuntimeStartHandler implements EventHandler<RuntimeStart> {
-  private final REEFScheduler REEFScheduler;
+  private final REEFScheduler reefScheduler;
 
   @Inject
-  MesosRuntimeStartHandler(final REEFScheduler REEFScheduler) {
-    this.REEFScheduler = REEFScheduler;
+  MesosRuntimeStartHandler(final REEFScheduler reefScheduler) {
+    this.reefScheduler = reefScheduler;
   }
 
   @Override
   public void onNext(final RuntimeStart runtimeStart){
-    this.REEFScheduler.onStart();
+    this.reefScheduler.onStart();
   }
 }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosRuntimeStopHandler.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosRuntimeStopHandler.java b/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosRuntimeStopHandler.java
index 273c658..80648d0 100644
--- a/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosRuntimeStopHandler.java
+++ b/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/MesosRuntimeStopHandler.java
@@ -24,15 +24,15 @@ import org.apache.reef.wake.time.runtime.event.RuntimeStop;
 import javax.inject.Inject;
 
 final class MesosRuntimeStopHandler implements EventHandler<RuntimeStop> {
-  private final REEFScheduler REEFScheduler;
+  private final REEFScheduler reefScheduler;
 
   @Inject
-  MesosRuntimeStopHandler(final REEFScheduler REEFScheduler) {
-    this.REEFScheduler = REEFScheduler;
+  MesosRuntimeStopHandler(final REEFScheduler reefScheduler) {
+    this.reefScheduler = reefScheduler;
   }
 
   @Override
   public void onNext(final RuntimeStop runtimeStop) {
-    this.REEFScheduler.onStop();
+    this.reefScheduler.onStop();
   }
 }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/REEFScheduler.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/REEFScheduler.java b/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/REEFScheduler.java
index 4a0136a..3ab11aa 100644
--- a/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/REEFScheduler.java
+++ b/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/driver/REEFScheduler.java
@@ -451,13 +451,13 @@ final class REEFScheduler implements Scheduler {
   }
 
   private String getExecutorLaunchCommand(final String executorID, final int memorySize) {
-    final String DEFAULT_JAVA_PATH = System.getenv("JAVA_HOME") + "/bin/" +  "java";
+    final String defaultJavaPath = System.getenv("JAVA_HOME") + "/bin/" +  "java";
     final String classPath = "-classpath " + StringUtils.join(this.classpath.getEvaluatorClasspath(), ":");
     final String logging = "-Djava.util.logging.config.class=org.apache.reef.util.logging.Config";
     final String mesosExecutorId = "-mesos_executor_id " + executorID;
 
     return (new StringBuilder()
-        .append(DEFAULT_JAVA_PATH + " ")
+        .append(defaultJavaPath + " ")
         .append("-XX:PermSize=128m" + " ")
         .append("-XX:MaxPermSize=128m" + " ")
         .append("-Xmx" + String.valueOf(memorySize) + "m" + " ")

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/evaluator/REEFExecutor.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/evaluator/REEFExecutor.java b/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/evaluator/REEFExecutor.java
index c634fc3..f1e1252 100644
--- a/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/evaluator/REEFExecutor.java
+++ b/lang/java/reef-runtime-mesos/src/main/java/org/apache/reef/runtime/mesos/evaluator/REEFExecutor.java
@@ -243,7 +243,7 @@ public final class REEFExecutor implements Executor {
    */
   public static void main(final String[] args) throws Exception {
     final Injector injector = Tang.Factory.getTang().newInjector(parseCommandLine(args));
-    final REEFExecutor REEFExecutor = injector.getInstance(REEFExecutor.class);
-    REEFExecutor.onStart();
+    final REEFExecutor reefExecutor = injector.getInstance(REEFExecutor.class);
+    reefExecutor.onStart();
   }
 }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/driver/YarnResourceRequestHandler.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/driver/YarnResourceRequestHandler.java b/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/driver/YarnResourceRequestHandler.java
index f178d16..873ab65 100644
--- a/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/driver/YarnResourceRequestHandler.java
+++ b/lang/java/reef-runtime-yarn/src/main/java/org/apache/reef/runtime/yarn/driver/YarnResourceRequestHandler.java
@@ -62,13 +62,13 @@ public final class YarnResourceRequestHandler implements ResourceRequestHandler
     // set the priority for the request
     final Priority pri = getPriority(resourceRequestEvent);
     final Resource resource = getResource(resourceRequestEvent);
-    final boolean relax_locality = resourceRequestEvent.getRelaxLocality().orElse(true);
+    final boolean relaxLocality = resourceRequestEvent.getRelaxLocality().orElse(true);
 
     final AMRMClient.ContainerRequest[] containerRequests =
         new AMRMClient.ContainerRequest[resourceRequestEvent.getResourceCount()];
 
     for (int i = 0; i < resourceRequestEvent.getResourceCount(); i++) {
-      containerRequests[i] = new AMRMClient.ContainerRequest(resource, nodes, racks, pri, relax_locality);
+      containerRequests[i] = new AMRMClient.ContainerRequest(resource, nodes, racks, pri, relaxLocality);
     }
     this.yarnContainerRequestHandler.onContainerRequest(containerRequests);
   }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/formats/ConfigurationModuleBuilder.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/formats/ConfigurationModuleBuilder.java b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/formats/ConfigurationModuleBuilder.java
index 25cbe71..1d5139f 100644
--- a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/formats/ConfigurationModuleBuilder.java
+++ b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/formats/ConfigurationModuleBuilder.java
@@ -37,9 +37,9 @@ import java.util.Set;
 
 public abstract class ConfigurationModuleBuilder {
 
-  private static final Set<Class<?>> paramBlacklist = new MonotonicHashSet<Class<?>>(
+  private static final Set<Class<?>> PARAM_BLACKLIST = new MonotonicHashSet<Class<?>>(
       Param.class, Impl.class);
-  private static final Set<Class<?>> paramTypes = new MonotonicHashSet<Class<?>>(
+  private static final Set<Class<?>> PARAM_TYPES = new MonotonicHashSet<Class<?>>(
       RequiredImpl.class, OptionalImpl.class, RequiredParameter.class,
       OptionalParameter.class);
   final JavaConfigurationBuilder b = Tang.Factory.getTang()
@@ -62,12 +62,12 @@ public abstract class ConfigurationModuleBuilder {
   protected ConfigurationModuleBuilder() {
     for (Field f : getClass().getDeclaredFields()) {
       Class<?> t = f.getType();
-      if (paramBlacklist.contains(t)) {
+      if (PARAM_BLACKLIST.contains(t)) {
         throw new ClassHierarchyException(
             "Found a field of type " + t + " which should be a Required/Optional Parameter/Implementation instead"
         );
       }
-      if (paramTypes.contains(t)) {
+      if (PARAM_TYPES.contains(t)) {
         if (!Modifier.isPublic(f.getModifiers())) {
           throw new ClassHierarchyException(
               "Found a non-public configuration option in " + getClass() + ": "

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/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 8c898e9..10618a9 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
@@ -333,8 +333,8 @@ public class ClassHierarchyImpl implements JavaClassHierarchy {
     // Finally, do things that might introduce cycles that invlove c.
     // This has to be below registerClass, which ensures that any cycles
     // this stuff introduces are broken.
-    for (Class<?> inner_class : c.getDeclaredClasses()) {
-      register(ReflectionUtilities.getFullName(inner_class));
+    for (Class<?> innerClass : c.getDeclaredClasses()) {
+      register(ReflectionUtilities.getFullName(innerClass));
     }
     if (n instanceof ClassNode) {
       ClassNode<?> cls = (ClassNode<?>) n;

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/InjectorImpl.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/InjectorImpl.java b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/InjectorImpl.java
index 8887cb1..fdbe880 100644
--- a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/InjectorImpl.java
+++ b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/InjectorImpl.java
@@ -109,9 +109,9 @@ public class InjectorImpl implements Injector {
         throw new IllegalStateException();
       }
       try {
-        ClassNode<?> new_cn = (ClassNode<?>) i.namespace.getNode(cn
+        ClassNode<?> newCn = (ClassNode<?>) i.namespace.getNode(cn
             .getFullName());
-        i.instances.put(new_cn, old.instances.get(cn));
+        i.instances.put(newCn, old.instances.get(cn));
       } catch (BindException e) {
         throw new IllegalStateException("Could not resolve name "
             + cn.getFullName() + " when copying injector");
@@ -122,9 +122,9 @@ public class InjectorImpl implements Injector {
     for (NamedParameterNode<?> np : old.namedParameterInstances.keySet()) {
       // if (!builder.namedParameters.containsKey(np)) {
       Object o = old.namedParameterInstances.get(np);
-      NamedParameterNode<?> new_np = (NamedParameterNode<?>) i.namespace
+      NamedParameterNode<?> newNp = (NamedParameterNode<?>) i.namespace
           .getNode(np.getFullName());
-      i.namedParameterInstances.put(new_np, o);
+      i.namedParameterInstances.put(newNp, o);
     }
     // Fork the aspect (if any)
     if (old.aspect != null) {
@@ -171,7 +171,7 @@ public class InjectorImpl implements Injector {
       final List<ClassNode<T>> candidateImplementations,
       final Map<Node, InjectionPlan<?>> memo) {
 
-    final List<InjectionPlan<T>> sub_ips = new ArrayList<>();
+    final List<InjectionPlan<T>> subIps = new ArrayList<>();
     for (final ClassNode<T> thisCN : candidateImplementations) {
       final List<Constructor<T>> constructors = new ArrayList<>();
       final List<ConstructorDef<T>> constructorList = new ArrayList<>();
@@ -243,11 +243,11 @@ public class InjectorImpl implements Injector {
         }
       }
       if (constructors.size() > 0) {
-        sub_ips.add(wrapInjectionPlans(thisCN, constructors, false,
-            liveIndices.size() == 1 ? liveIndices.get(0) : -1));
+        subIps.add(wrapInjectionPlans(thisCN, constructors, false,
+                liveIndices.size() == 1 ? liveIndices.get(0) : -1));
       }
     }
-    return sub_ips;
+    return subIps;
   }
 
   @SuppressWarnings("unchecked")
@@ -276,11 +276,11 @@ public class InjectorImpl implements Injector {
       // other impls to the list of things to consider.
       final List<ClassNode<T>> candidateImplementations = new ArrayList<>();
       candidateImplementations.add(cn);
-      final List<InjectionPlan<T>> sub_ips = filterCandidateConstructors(candidateImplementations, memo);
-      if (sub_ips.size() == 1) {
-        return wrapInjectionPlans(cn, sub_ips, false, -1);
+      final List<InjectionPlan<T>> subIps = filterCandidateConstructors(candidateImplementations, memo);
+      if (subIps.size() == 1) {
+        return wrapInjectionPlans(cn, subIps, false, -1);
       } else {
-        return wrapInjectionPlans(cn, sub_ips, true, -1);
+        return wrapInjectionPlans(cn, subIps, true, -1);
       }
     }
   }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/JavaNodeFactory.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/JavaNodeFactory.java b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/JavaNodeFactory.java
index ee359a7..f0c2877 100644
--- a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/JavaNodeFactory.java
+++ b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/java/JavaNodeFactory.java
@@ -166,43 +166,43 @@ public final class JavaNodeFactory {
     }
     final boolean hasStringDefault, hasClassDefault, hasStringSetDefault, hasClassSetDefault;
 
-    int default_count = 0;
+    int defaultCount = 0;
     if (!namedParameter.default_value().isEmpty()) {
       hasStringDefault = true;
-      default_count++;
+      defaultCount++;
     } else {
       hasStringDefault = false;
     }
     if (namedParameter.default_class() != Void.class) {
       hasClassDefault = true;
-      default_count++;
+      defaultCount++;
     } else {
       hasClassDefault = false;
     }
     if (namedParameter.default_values() != null && namedParameter.default_values().length > 0) {
       hasStringSetDefault = true;
-      default_count++;
+      defaultCount++;
     } else {
       hasStringSetDefault = false;
     }
     if (namedParameter.default_classes() != null && namedParameter.default_classes().length > 0) {
       hasClassSetDefault = true;
-      default_count++;
+      defaultCount++;
     } else {
       hasClassSetDefault = false;
     }
-    if (default_count > 1) {
+    if (defaultCount > 1) {
       throw new ClassHierarchyException("Named parameter " + fullName + " defines more than one of default_value, default_class, default_values and default_classes");
     }
 
     final String[] defaultInstanceAsStrings;
 
-    if (default_count == 0) {
+    if (defaultCount == 0) {
       defaultInstanceAsStrings = new String[]{};
     } else if (hasClassDefault) {
-      final Class<?> default_class = namedParameter.default_class();
-      assertIsSubclassOf(clazz, default_class, argClass);
-      defaultInstanceAsStrings = new String[]{ReflectionUtilities.getFullName(default_class)};
+      final Class<?> defaultClass = namedParameter.default_class();
+      assertIsSubclassOf(clazz, defaultClass, argClass);
+      defaultInstanceAsStrings = new String[]{ReflectionUtilities.getFullName(defaultClass)};
     } else if (hasStringDefault) {
       // Don't know if the string is a class or literal here, so don't bother validating.
       defaultInstanceAsStrings = new String[]{namedParameter.default_value()};
@@ -228,7 +228,7 @@ public final class JavaNodeFactory {
         fullArgName, simpleArgName, isSet, isList, documentation, shortName, defaultInstanceAsStrings);
   }
 
-  private static void assertIsSubclassOf(Class<?> named_parameter, Class<?> default_class,
+  private static void assertIsSubclassOf(Class<?> namedParameter, Class<?> defaultClass,
                                          Type argClass) {
     boolean isSubclass = false;
     boolean isGenericSubclass = false;
@@ -239,7 +239,7 @@ public final class JavaNodeFactory {
 
     /// If we have a Name that takes EventHandler<A>, we want to be able to pass in an EventHandler<Object>.
 
-    for (final Type c : ReflectionUtilities.classAndAncestors(default_class)) {
+    for (final Type c : ReflectionUtilities.classAndAncestors(defaultClass)) {
       if (ReflectionUtilities.getRawClass(c).equals(argRawClass)) {
         isSubclass = true;
         if (argClass instanceof ParameterizedType &&
@@ -267,12 +267,12 @@ public final class JavaNodeFactory {
     }
 
     if (!(isSubclass)) {
-      throw new ClassHierarchyException(named_parameter + " defines a default class "
-          + ReflectionUtilities.getFullName(default_class) + " with a raw type that does not extend of its target's raw type " + argRawClass);
+      throw new ClassHierarchyException(namedParameter + " defines a default class "
+          + ReflectionUtilities.getFullName(defaultClass) + " with a raw type that does not extend of its target's raw type " + argRawClass);
     }
     if (!(isGenericSubclass)) {
-      throw new ClassHierarchyException(named_parameter + " defines a default class "
-          + ReflectionUtilities.getFullName(default_class) + " with a type that does not extend its target's type " + argClass);
+      throw new ClassHierarchyException(namedParameter + " defines a default class "
+          + ReflectionUtilities.getFullName(defaultClass) + " with a type that does not extend its target's type " + argClass);
     }
   }
 

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/protobuf/ProtocolBufferClassHierarchy.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/protobuf/ProtocolBufferClassHierarchy.java b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/protobuf/ProtocolBufferClassHierarchy.java
index e21eb4e..e1bd96c 100644
--- a/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/protobuf/ProtocolBufferClassHierarchy.java
+++ b/lang/java/reef-tang/tang/src/main/java/org/apache/reef/tang/implementation/protobuf/ProtocolBufferClassHierarchy.java
@@ -37,7 +37,6 @@ import java.util.List;
 @Deprecated
 public class ProtocolBufferClassHierarchy implements ClassHierarchy {
 
-  private static final String regex = "[\\.\\$\\+]";
   private final PackageNode namespace;
   private HashMap<String, Node> lookupTable = new HashMap<>();
 
@@ -360,22 +359,6 @@ public class ProtocolBufferClassHierarchy implements ClassHierarchy {
   public Node getNode(String fullName) throws NameResolutionException {
 
     Node ret = lookupTable.get(fullName);
-/*    String[] tok = fullName.split(regex);
-
-    Node ret = namespace.get(fullName);
-    for (int i = 0; i < tok.length; i++) {
-      Node n = namespace.get(getNthPrefix(fullName, i));
-      if (n != null) {
-        for (i++; i < tok.length; i++) {
-          n = n.get(tok[i]);
-          if (n == null) {
-            throw new NameResolutionException(fullName, getNthPrefix(fullName,
-                i - 1));
-          }
-        }
-        return n;
-      }
-    } */
     if (ret != null) {
       return ret;
     } else {

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/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 65f2e92..ecfb11c 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
@@ -35,15 +35,15 @@ public final class ReflectionUtilities {
   /**
    * A map from numeric classes to the number of bits used by their representations.
    */
-  private static final Map<Class<?>, Integer> sizeof = new HashMap<>();
+  private static final Map<Class<?>, Integer> SIZEOF = new HashMap<>();
 
   static {
-    sizeof.put(Byte.class, Byte.SIZE);
-    sizeof.put(Short.class, Short.SIZE);
-    sizeof.put(Integer.class, Integer.SIZE);
-    sizeof.put(Long.class, Long.SIZE);
-    sizeof.put(Float.class, Float.SIZE);
-    sizeof.put(Double.class, Double.SIZE);
+    SIZEOF.put(Byte.class, Byte.SIZE);
+    SIZEOF.put(Short.class, Short.SIZE);
+    SIZEOF.put(Integer.class, Integer.SIZE);
+    SIZEOF.put(Long.class, Long.SIZE);
+    SIZEOF.put(Float.class, Float.SIZE);
+    SIZEOF.put(Double.class, Double.SIZE);
   }
 
   /**
@@ -148,7 +148,7 @@ public final class ReflectionUtilities {
     from = boxClass(from);
     if (Number.class.isAssignableFrom(to)
         && Number.class.isAssignableFrom(from)) {
-      return sizeof.get(from) <= sizeof.get(to);
+      return SIZEOF.get(from) <= SIZEOF.get(to);
     }
     return to.isAssignableFrom(from);
   }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/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 5870d1d..e95ef60 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
@@ -158,10 +158,10 @@ public class Tint {
 
       @Override
       public boolean visit(NamedParameterNode<?> node) {
-        String node_s = node.getFullName();
+        String nodeS = node.getFullName();
         for (String s : node.getDefaultInstanceAsStrings()) {
-          if (!usages.contains(s, node_s)) {
-            usages.put(s, node_s);
+          if (!usages.contains(s, nodeS)) {
+            usages.put(s, nodeS);
           }
         }
         return true;
@@ -174,12 +174,12 @@ public class Tint {
 
       @Override
       public boolean visit(ClassNode<?> node) {
-        String node_s = node.getFullName();
+        String nodeS = node.getFullName();
         for (ConstructorDef<?> d : node.getInjectableConstructors()) {
           for (ConstructorArg a : d.getArgs()) {
             if (a.getNamedParameterName() != null &&
-                !usages.contains(a.getNamedParameterName(), node_s)) {
-              usages.put(a.getNamedParameterName(), node_s);
+                !usages.contains(a.getNamedParameterName(), nodeS)) {
+              usages.put(a.getNamedParameterName(), nodeS);
             }
           }
         }
@@ -210,12 +210,12 @@ public class Tint {
 
       for (Field f : modules.keySet()) {
         ConfigurationModule m = modules.get(f);
-        String f_s = ReflectionUtilities.getFullName(f);
+        String fS = ReflectionUtilities.getFullName(f);
         Set<NamedParameterNode<?>> nps = m.getBoundNamedParameters();
         for (NamedParameterNode<?> np : nps) {
-          String np_s = np.getFullName();
-          if (!setters.contains(np_s, f_s)) {
-            setters.put(np_s, f_s);
+          String npS = np.getFullName();
+          if (!setters.contains(npS, fS)) {
+            setters.put(npS, fS);
           }
         }
       }
@@ -436,9 +436,9 @@ public class Tint {
     if (di != null) {
       String diName = di.value() == Void.class ? di.name() : ReflectionUtilities.getFullName(di.value());
       ClassNode<?> cn = (ClassNode<?>) ch.getNode(cmb);
-      String cn_s = cn.getFullName();
-      if (!usages.contains(diName, cn_s)) {
-        usages.put(diName, cn_s);
+      String cnS = cn.getFullName();
+      if (!usages.contains(diName, cnS)) {
+        usages.put(diName, cnS);
         if (!knownClasses.contains(cn)) {
           knownClasses.add(cn);
         }
@@ -467,20 +467,20 @@ public class Tint {
 //          System.err.println("OK: " + f);
           try {
             f.setAccessible(true);
-            String f_s = ReflectionUtilities.getFullName(f);
+            String fS = ReflectionUtilities.getFullName(f);
             if (!modules.containsKey(f)) {
               modules.put(f, (ConfigurationModule) (f.get(null)));
               try {
                 modules.get(f).assertStaticClean();
               } catch (ClassHierarchyException e) {
-                System.err.println(f_s + ": " + e.getMessage());
+                System.err.println(fS + ": " + e.getMessage());
               }
               for (Entry<String, String> e : modules.get(f).toStringPairs()) {
                 //System.err.println("e: " + e.getKey() + "=" + e.getValue());
                 try {
                   Node n = ch.getNode(e.getKey());
-                  if (!setters.contains(e.getKey(), f_s)) {
-                    setters.put(e.getKey(), f_s);
+                  if (!setters.contains(e.getKey(), fS)) {
+                    setters.put(e.getKey(), fS);
                   }
                   if (n instanceof ClassNode) {
                     ClassNode<?> cn = (ClassNode<?>) n;
@@ -564,14 +564,14 @@ public class Tint {
 
       @Override
       public boolean visit(ClassNode<?> node) {
-        String node_s = node.getFullName();
-        if (userKeys.contains(node_s)) {
+        String nodeS = node.getFullName();
+        if (userKeys.contains(nodeS)) {
           names.add(node);
         }
-        if (setterKeys.contains(node_s)) {
+        if (setterKeys.contains(nodeS)) {
           names.add(node);
         }
-        if (usedKeys.contains(node_s)) {
+        if (usedKeys.contains(nodeS)) {
           if (!names.contains(node)) {
             names.add(node);
           }

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/IdentifierParser.java
----------------------------------------------------------------------
diff --git a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/IdentifierParser.java b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/IdentifierParser.java
index d7c9335..437dd9a 100644
--- a/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/IdentifierParser.java
+++ b/lang/java/reef-wake/wake/src/main/java/org/apache/reef/wake/IdentifierParser.java
@@ -28,7 +28,7 @@ import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 
 public class IdentifierParser implements ExternalConstructor<Identifier> {
-  private static final IdentifierFactory factory;
+  private static final IdentifierFactory FACTORY;
 
   // TODO: Modify tang to allow this to use a factory pattern.
   static {
@@ -37,14 +37,14 @@ public class IdentifierParser implements ExternalConstructor<Identifier> {
     map.put("socket", SocketRemoteIdentifier.class);
     map.put("file", FileIdentifier.class);
 
-    factory = new DefaultIdentifierFactory(map);
+    FACTORY = new DefaultIdentifierFactory(map);
   }
 
   final Identifier id;
 
   @Inject
   IdentifierParser(String s) {
-    id = factory.getNewInstance(s);
+    id = FACTORY.getNewInstance(s);
   }
 
   @Override

http://git-wip-us.apache.org/repos/asf/incubator-reef/blob/760e82e6/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 e020a7f..839a13f 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
@@ -25,7 +25,7 @@ import java.util.concurrent.atomic.AtomicInteger;
  * A default thread factory implementation that names created threads.
  */
 public final class DefaultThreadFactory implements ThreadFactory {
-  private static final AtomicInteger poolNumber = new AtomicInteger(1);
+  private static final AtomicInteger POOL_NUMBER = new AtomicInteger(1);
   private final ThreadGroup group;
   private final AtomicInteger threadNumber = new AtomicInteger(1);
   private final String prefix;
@@ -39,7 +39,7 @@ public final class DefaultThreadFactory implements ThreadFactory {
   public DefaultThreadFactory(String prefix) {
     SecurityManager s = System.getSecurityManager();
     this.group = (s != null) ? s.getThreadGroup() : Thread.currentThread().getThreadGroup();
-    this.prefix = prefix + "-pool-" + poolNumber.getAndIncrement() + "-thread-";
+    this.prefix = prefix + "-pool-" + POOL_NUMBER.getAndIncrement() + "-thread-";
     this.uncaughtExceptionHandler = null;
   }
 
@@ -52,7 +52,7 @@ public final class DefaultThreadFactory implements ThreadFactory {
   public DefaultThreadFactory(String prefix, Thread.UncaughtExceptionHandler uncaughtExceptionHandler) {
     SecurityManager s = System.getSecurityManager();
     this.group = (s != null) ? s.getThreadGroup() : Thread.currentThread().getThreadGroup();
-    this.prefix = prefix + "-pool-" + poolNumber.getAndIncrement() + "-thread-";
+    this.prefix = prefix + "-pool-" + POOL_NUMBER.getAndIncrement() + "-thread-";
     this.uncaughtExceptionHandler = uncaughtExceptionHandler;
   }