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https://issues.apache.org/jira/browse/HADOOP-3937?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12627492#action_12627492
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Hudson commented on HADOOP-3937:
--------------------------------
Integrated in Hadoop-trunk #589 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/589/])
> Job history may get disabled due to overly long job names
> ---------------------------------------------------------
>
> Key: HADOOP-3937
> URL: https://issues.apache.org/jira/browse/HADOOP-3937
> Project: Hadoop Core
> Issue Type: Bug
> Affects Versions: 0.17.0, 0.17.1, 0.18.0, 0.19.0
> Reporter: Matei Zaharia
> Assignee: Matei Zaharia
> Fix For: 0.19.0
>
> Attachments: HADOOP-3937.patch
>
>
> Since Hadoop 0.17, the job history logs include the job's name in the
> filename. However, this can lead to overly long filenames, because job names
> may be arbitrarily long. When a filename is too long for the underlying OS,
> file creation fails and the JobHistory class silently disables history from
> that point on. This can lead to days of lost history until somebody notices
> the error in the log.
> Proposed solution: Trim the job name to a reasonable length when selecting a
> filename for the history file.
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