svn merge -c 1302645 from trunk to branch-0.23 FIXES MAPREDUCE-4025. AM can crash if task attempt reports bogus progress value (Jason Lowe via bobby)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-0.23@1302646 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -108,6 +108,9 @@ Release 0.23.2 - UNRELEASED
     MAPREDUCE-3954. Added new envs to separate heap size for different daemons
     started via bin scripts. (Robert Joseph Evans via vinodkv)
 
+    MAPREDUCE-4025.  AM can crash if task attempt reports bogus progress value
+    (Jason Lowe via bobby)
+
   OPTIMIZATIONS
 
     MAPREDUCE-3901. Modified JobHistory records in YARN to lazily load job and

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/job/impl/TaskAttemptImpl.java

@@ -1030,6 +1030,7 @@ public abstract class TaskAttemptImpl implements
   
   private void updateProgressSplits() {
     double newProgress = reportedStatus.progress;
+    newProgress = Math.max(Math.min(newProgress, 1.0D), 0.0D);
     Counters counters = reportedStatus.counters;
     if (counters == null)
       return;