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https://issues.apache.org/jira/browse/MAPREDUCE-1828?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Allen Wittenauer resolved MAPREDUCE-1828.
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Resolution: Won't Fix
mapred.child.env has basically been deprecated.
> Job doesn't fail graciously when an invalid mapred.child.env value is
> specified
> -------------------------------------------------------------------------------
>
> Key: MAPREDUCE-1828
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1828
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: tasktracker
> Reporter: Ravi Gummadi
> Assignee: Ravi Gummadi
> Attachments: 1828.patch
>
>
> When invalid input is given to -Dmapred.child.env=,
> ArrayIndexOutOfBoundsException is seen instead of giving a useful error
> message.
> bin/hadoop jar hadoop-streaming.jar -Dmapred.child.env="X:Y" -input inp_empty
> -output out -mapper /bin/cat
> -reducer /bin/cat
> java.lang.Throwable: Child Error at
> org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:242) Caused by:
> java.lang.ArrayIndexOutOfBoundsException: 1 at
> org.apache.hadoop.mapred.TaskRunner.getVMEnvironment(TaskRunner.java:571) at
> org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:212)
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