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Posted to common-dev@hadoop.apache.org by "Tom White (JIRA)" <ji...@apache.org> on 2008/07/18 15:58:31 UTC

[jira] Updated: (HADOOP-3789) Include more detail in the exception message when a streaming task fails

     [ https://issues.apache.org/jira/browse/HADOOP-3789?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tom White updated HADOOP-3789:
------------------------------

    Attachment: hadoop-3789.patch

This patch extends PipeMapRed so that when a HadoopStreaming subprocess terminates with a nonzero exit code, and it's recognized as task failure due to stream.non.zero.exit.is.failure, the resulting Java exception carries recent subprocess stderr. "Recent" means more recent than the last "reporter:" line on stderr, limited to a maximum of 2K (configurable)

> Include more detail in the exception message when a streaming task fails
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-3789
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3789
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: contrib/streaming
>            Reporter: Tom White
>             Fix For: 0.19.0
>
>         Attachments: hadoop-3789.patch
>
>
> When debugging streaming programs, it would be useful to have the last few lines from stderr in the exception message (which is shown in the task's status display).

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