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https://issues.apache.org/jira/browse/HADOOP-3068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Chansler updated HADOOP-3068:
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Fix Version/s: (was: 0.17.0)
> hadoop streaming tasks hang for when stream.non.zero.exit.is.failure==true
> and reduce processes exit with non zero status
> -------------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-3068
> URL: https://issues.apache.org/jira/browse/HADOOP-3068
> Project: Hadoop Core
> Issue Type: Bug
> Components: contrib/streaming
> Environment: Java(TM) SE Runtime Environment (build 1.6.0_04-b12);
> Hadoop version 0.17.0-dev, r639662
> Reporter: Yuri Pradkin
>
> When I set *stream.non.zero.exit.is.failure* to true and run a streaming job
> with reducers that exit with a non-zero status, those tasks fail apparently
> waiting for something.
> ...
> 2008-03-21 13:33:53,715 INFO org.apache.hadoop.streaming.PipeMapRed:
> R/W/S=65501/1/0 in:334=65501/196 [rec/s] out:0=1/196 [rec/s]
> 2008-03-21 13:33:53,719 INFO org.apache.hadoop.streaming.PipeMapRed:
> mapRedFinished
> 2008-03-21 13:34:11,228 INFO org.apache.hadoop.streaming.PipeMapRed: Records
> R/W=65536/2
> 2008-03-21 13:34:11,235 INFO org.apache.hadoop.streaming.PipeMapRed:
> PipeMapRed.waitOutputThreads(): subprocess exitted with code 1
> 2008-03-21 13:34:11,235 INFO org.apache.hadoop.streaming.PipeMapRed:
> MRErrorThread done
> 2008-03-21 13:34:11,238 INFO org.apache.hadoop.streaming.PipeMapRed:
> MROutputThread done
> 2008-03-21 13:34:11,245 WARN org.apache.hadoop.mapred.TaskTracker: Error
> running child
> java.lang.RuntimeException: PipeMapRed.waitOutputThreads(): subprocess failed
> with code 1
> at
> org.apache.hadoop.streaming.PipeMapRed.waitOutputThreads(PipeMapRed.java:331)
> at
> org.apache.hadoop.streaming.PipeMapRed.mapRedFinished(PipeMapRed.java:475)
> at org.apache.hadoop.streaming.PipeReducer.close(PipeReducer.java:110)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:399)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2113)
> After that the task still shows up with status:Running, but it just hangs
> there and when/if all tasks get into this state, the whole cluster hangs.
> BTW, may I suggest that we make *stream.non.zero.exit.is.failure* default to
> true after this is fixed?
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