MAPREDUCE-5837. MRAppMaster fails when checking on uber mode. Contributed by Haohui Mai.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1589903 13f79535-47bb-0310-9956-ffa450edef68

hadoop-mapreduce-project/CHANGES.txt

@@ -187,6 +187,8 @@ Release 2.5.0 - UNRELEASED
 
     MAPREDUCE-5846. Rumen doesn't understand JobQueueChangedEvent (Nathan Roberts via raviprak)
 
+    MAPREDUCE-5837. MRAppMaster fails when checking on uber mode. (wheat9)
+
 Release 2.4.1 - UNRELEASED
 
   INCOMPATIBLE CHANGES

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

@@ -1288,6 +1288,7 @@ public class JobImpl implements org.apache.hadoop.mapreduce.v2.app.job.Job,
       }
     } catch (ClassNotFoundException cnfe) {
       // don't care; assume it's not derived from ChainMapper
+    } catch (NoClassDefFoundError ignored) {
     }
     try {
       String reduceClassName = conf.get(MRJobConfig.REDUCE_CLASS_ATTR);
@@ -1298,6 +1299,7 @@ public class JobImpl implements org.apache.hadoop.mapreduce.v2.app.job.Job,
       }
     } catch (ClassNotFoundException cnfe) {
       // don't care; assume it's not derived from ChainReducer
+    } catch (NoClassDefFoundError ignored) {
     }
     return isChainJob;
   }