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https://issues.apache.org/jira/browse/HADOOP-6030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12722067#action_12722067
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Christian Kunz commented on HADOOP-6030:
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As Qi's comment indicates, the statement in the description should be changed.
'hadoop jar' will return correct exit code depending on the handling of
uncaught exceptions. If the default handler has as consequence a non-zero exit
code (seems to be the case, but is this fact actually documented somewhere?),
then no change is needed.
'mapred pipes' still needs modifications to return non-zero exit code for
improper submission.
> hadoop jar and hadoop/mapred pipes might return exit code 0 even when failing
> -----------------------------------------------------------------------------
>
> Key: HADOOP-6030
> URL: https://issues.apache.org/jira/browse/HADOOP-6030
> Project: Hadoop Core
> Issue Type: Bug
> Components: mapred
> Reporter: Christian Kunz
>
> up to hadoop 0.18.3 org.apache.hadoop.mapred.JobShell ensured that 'hadoop
> jar' returns non-zero exit code when the job fails.
> This is no longer true after moving this to org.apache.hadoop.util.RunJar.
> Pipes jobs submitted through cli never returned proper exit code.
> The main methods in org.apache.hadoop.util.RunJar. and
> org.apache.hadoop.mapred.pipes.Submitter should be modified to return an exit
> code similar to how org.apache.hadoop.mapred.JobShell did it.
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