Task succeeds even when committer.commitTask fails with IOException
-------------------------------------------------------------------
Key: MAPREDUCE-838
URL: https://issues.apache.org/jira/browse/MAPREDUCE-838
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: task
Affects Versions: 0.20.1
Reporter: Koji Noguchi
In MAPREDUCE-837, job succeeded with empty output even though all the tasks
were throwing IOException at commiter.commitTask.
{noformat}
2009-08-07 17:51:47,458 INFO org.apache.hadoop.mapred.TaskRunner: Task
attempt_200907301448_8771_r_000000_0 is allowed to commit now
2009-08-07 17:51:47,466 WARN org.apache.hadoop.mapred.TaskRunner: Failure
committing: java.io.IOException: Can not get the relative path: \
base =
hdfs://mynamenode:8020/user/knoguchi/test2.har/_temporary/_attempt_200907301448_8771_r_000000_0
\
child =
hdfs://mynamenode/user/knoguchi/test2.har/_temporary/_attempt_200907301448_8771_r_000000_0/_index
at
org.apache.hadoop.mapred.FileOutputCommitter.getFinalPath(FileOutputCommitter.java:150)
at
org.apache.hadoop.mapred.FileOutputCommitter.moveTaskOutputs(FileOutputCommitter.java:106)
at
org.apache.hadoop.mapred.FileOutputCommitter.moveTaskOutputs(FileOutputCommitter.java:126)
at
org.apache.hadoop.mapred.FileOutputCommitter.commitTask(FileOutputCommitter.java:86)
at
org.apache.hadoop.mapred.OutputCommitter.commitTask(OutputCommitter.java:171)
at org.apache.hadoop.mapred.Task.commit(Task.java:768)
at org.apache.hadoop.mapred.Task.done(Task.java:692)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:417)
at org.apache.hadoop.mapred.Child.main(Child.java:170)
2009-08-07 17:51:47,468 WARN org.apache.hadoop.mapred.TaskRunner: Failure
asking whether task can commit: java.io.IOException: \
Can not get the relative path: base =
hdfs://mynamenode:8020/user/knoguchi/test2.har/_temporary/_attempt_200907301448_8771_r_000000_0
\
child =
hdfs://mynamenode/user/knoguchi/test2.har/_temporary/_attempt_200907301448_8771_r_000000_0/_index
at
org.apache.hadoop.mapred.FileOutputCommitter.getFinalPath(FileOutputCommitter.java:150)
at
org.apache.hadoop.mapred.FileOutputCommitter.moveTaskOutputs(FileOutputCommitter.java:106)
at
org.apache.hadoop.mapred.FileOutputCommitter.moveTaskOutputs(FileOutputCommitter.java:126)
at
org.apache.hadoop.mapred.FileOutputCommitter.commitTask(FileOutputCommitter.java:86)
at
org.apache.hadoop.mapred.OutputCommitter.commitTask(OutputCommitter.java:171)
at org.apache.hadoop.mapred.Task.commit(Task.java:768)
at org.apache.hadoop.mapred.Task.done(Task.java:692)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:417)
at org.apache.hadoop.mapred.Child.main(Child.java:170)
2009-08-07 17:51:47,469 INFO org.apache.hadoop.mapred.TaskRunner: Task
attempt_200907301448_8771_r_000000_0 is allowed to commit now
2009-08-07 17:51:47,472 INFO org.apache.hadoop.mapred.TaskRunner: Task
'attempt_200907301448_8771_r_000000_0' done.
{noformat}
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