TEZ-4340: fix checkstyle/whitespace issues

Author: csjuhasz-c

tez-runtime-library/src/main/java/org/apache/tez/runtime/library/common/shuffle/orderedgrouped/MergeManager.java

@@ -549,8 +549,9 @@ private void trackAndLogCloseInMemoryFile(MapOutput mapOutput) {
   private void startMemToDiskMerge() {
     synchronized (inMemoryMerger) {
       if (!inMemoryMerger.isInProgress()) {
-        LOG.info(inputContext.getInputOutputVertexNames() + ": " + "Starting inMemoryMerger's merge since commitMemory=" +
-            commitMemory + " > mergeThreshold=" + mergeThreshold +
+        LOG.info(inputContext.getInputOutputVertexNames() + ": " +
+            "Starting inMemoryMerger's merge since commitMemory=" + commitMemory +
+            " > mergeThreshold=" + mergeThreshold +
             ". Current usedMemory=" + usedMemory);
         inMemoryMapOutputs.addAll(inMemoryMergedMapOutputs);
         inMemoryMergedMapOutputs.clear();
@@ -788,8 +789,8 @@ public void merge(List<MapOutput> inputs) throws IOException, InterruptedExcepti
 
       Writer writer = new InMemoryWriter(mergedMapOutputs.getMemory());
 
-      LOG.info(inputContext.getInputOutputVertexNames() + ": " + "Initiating Memory-to-Memory merge with " + noInMemorySegments +
-               " segments of total-size: " + mergeOutputSize);
+      LOG.info(inputContext.getInputOutputVertexNames() + ": " + "Initiating Memory-to-Memory merge with " +
+          noInMemorySegments + " segments of total-size: " + mergeOutputSize);
 
       if (Thread.currentThread().isInterrupted()) {
         return; // early exit

tez-tests/src/test/java/org/apache/tez/test/TestInput.java

@@ -352,7 +352,8 @@ public void handleEvents(List<Event> inputEvents) throws Exception {
       if (event instanceof DataMovementEvent) {
         DataMovementEvent dmEvent = (DataMovementEvent) event;
         numCompletedInputs++;
-        LOG.info(getContext().getInputOutputVertexNames() + " Received DataMovement event sourceId : " + dmEvent.getSourceIndex() + 
+        LOG.info(getContext().getInputOutputVertexNames() +
+            " Received DataMovement event sourceId : " + dmEvent.getSourceIndex() +
             " targetId: " + dmEvent.getTargetIndex() +
             " version: " + dmEvent.getVersion() +
             " numInputs: " + getNumPhysicalInputs() +