YARN-4732. *ProcessTree classes have too many whitespace issues

(cherry picked from commit 7fae4c68e6)

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/util/ProcessTree.java

@@ -48,8 +48,8 @@ public class ProcessTree {
   private static final String SIGTERM_STR = "SIGTERM";
   private static final String SIGKILL_STR = "SIGKILL";
 
-
   public static final boolean isSetsidAvailable = isSetsidSupported();
+
   private static boolean isSetsidSupported() {
     ShellCommandExecutor shexec = null;
     boolean setsidSupported = true;
@@ -114,7 +114,6 @@ public class ProcessTree {
     sigKill(pgrpId, true, sleeptimeBeforeSigkill, inBackground);
   }
 
-
   /**
    * Send a specified signal to the specified pid
    *
@@ -215,7 +214,6 @@ public class ProcessTree {
     }  
   }
 
-
   /** Kills the process(OR process group) by sending the signal SIGKILL
    * @param pid Process id(OR process group id) of to-be-deleted-process
    * @param isProcessGroup Is pid a process group id of to-be-deleted-processes
@@ -327,7 +325,6 @@ public class ProcessTree {
     return (shexec.getExitCode() == 0 ? true : false);
   }
 
-
   /**
    * Helper thread class that kills process-tree with SIGKILL in background
    */

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/ProcfsBasedProcessTree.java

@@ -409,13 +409,11 @@ public class ProcfsBasedProcessTree extends ResourceCalculatorProcessTree {
               }
             }
           }
-        
           if (LOG.isDebugEnabled()) {
             LOG.debug(procMemInfo.toString());
           }
         }
       }
-      
     }
     if (total > 0) {
       total *= KB_TO_BYTES; // convert to bytes

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/WindowsBasedProcessTree.java

@@ -45,7 +45,6 @@ public class WindowsBasedProcessTree extends ResourceCalculatorProcessTree {
     long cpuTimeMsDelta; // delta of cpuTime since last update
     int age = 1;
   }
-  
   private String taskProcessId = null;
   private long cpuTimeMs = UNAVAILABLE;
   private Map<String, ProcessInfo> processTree =

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/util/TestProcfsBasedProcessTree.java

@@ -227,7 +227,6 @@ public class TestProcfsBasedProcessTree {
     // ProcessTree is gone now. Any further calls should be sane.
     p.updateProcessTree();
     Assert.assertFalse("ProcessTree must have been gone", isAlive(pid));
-    
     Assert.assertTrue(
       "vmem for the gone-process is " + p.getVirtualMemorySize()
           + " . It should be zero.", p.getVirtualMemorySize() == 0);
@@ -581,7 +580,6 @@ public class TestProcfsBasedProcessTree {
       // verify virtual memory
       Assert.assertEquals("Virtual memory does not match", 700000L,
         processTree.getVirtualMemorySize());
-      
       Assert.assertEquals("Virtual memory (old API) does not match", 700000L,
         processTree.getCumulativeVmem());
 
@@ -602,10 +600,8 @@ public class TestProcfsBasedProcessTree {
       processTree.updateProcessTree();
       Assert.assertEquals("vmem does not include new process",
         1200000L, processTree.getVirtualMemorySize());
-      
       Assert.assertEquals("vmem (old API) does not include new process",
         1200000L, processTree.getCumulativeVmem());
-      
       if (!smapEnabled) {
         long cumuRssMem =
             ProcfsBasedProcessTree.PAGE_SIZE > 0
@@ -632,7 +628,6 @@ public class TestProcfsBasedProcessTree {
       Assert.assertEquals(
           "vmem (old API) shouldn't have included new process", 700000L,
           processTree.getCumulativeVmem(1));
-      
       if (!smapEnabled) {
         long cumuRssMem =
             ProcfsBasedProcessTree.PAGE_SIZE > 0
@@ -645,7 +640,6 @@ public class TestProcfsBasedProcessTree {
         Assert.assertEquals(
           "rssmem (old API) shouldn't have included new process", cumuRssMem,
           processTree.getCumulativeRssmem(1));
-        
       } else {
         Assert.assertEquals(
           "rssmem shouldn't have included new process",
@@ -676,12 +670,10 @@ public class TestProcfsBasedProcessTree {
       Assert.assertEquals(
         "vmem shouldn't have included new processes", 700000L,
         processTree.getVirtualMemorySize(2));
-      
       // verify old API
       Assert.assertEquals(
         "vmem (old API) shouldn't have included new processes", 700000L,
         processTree.getCumulativeVmem(2));
-      
       if (!smapEnabled) {
         long cumuRssMem =
             ProcfsBasedProcessTree.PAGE_SIZE > 0

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/util/TestResourceCalculatorProcessTree.java

@@ -44,7 +44,6 @@ public class TestResourceCalculatorProcessTree {
     public long getRssMemorySize(int age) {
       return 0;
     }
-    
     @SuppressWarnings("deprecation")
     public long getCumulativeRssmem(int age) {
       return 0;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/util/TestWindowsBasedProcessTree.java

@@ -62,7 +62,6 @@ public class TestWindowsBasedProcessTree {
     assertTrue(pTree.getCumulativeVmem() == 2048);
     assertTrue(pTree.getVirtualMemorySize(0) == 2048);
     assertTrue(pTree.getCumulativeVmem(0) == 2048);
-    
     assertTrue(pTree.getRssMemorySize() == 2048);
     assertTrue(pTree.getCumulativeRssmem() == 2048);
     assertTrue(pTree.getRssMemorySize(0) == 2048);