NPE in PipeMapred.MRErrorThread
-------------------------------
Key: MAPREDUCE-1813
URL: https://issues.apache.org/jira/browse/MAPREDUCE-1813
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: contrib/streaming
Affects Versions: 0.20.1
Reporter: Amareshwari Sriramadasu
Fix For: 0.20.3
Some reduce tasks fail with following NPE
java.lang.RuntimeException: java.lang.NullPointerException
at
org.apache.hadoop.streaming.PipeMapRed.waitOutputThreads(PipeMapRed.java:325)
at
org.apache.hadoop.streaming.PipeMapRed.mapRedFinished(PipeMapRed.java:540)
at org.apache.hadoop.streaming.PipeReducer.close(PipeReducer.java:137)
at
org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:474)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:412)
at org.apache.hadoop.mapred.Child.main(Child.java:159)
Caused by: java.lang.NullPointerException
at
org.apache.hadoop.streaming.PipeMapRed$MRErrorThread.setStatus(PipeMapRed.java:517)
at
org.apache.hadoop.streaming.PipeMapRed$MRErrorThread.run(PipeMapRed.java:449)
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