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https://issues.apache.org/jira/browse/MAPREDUCE-6339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14518002#comment-14518002
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zhihai xu commented on MAPREDUCE-6339:
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I did several tests with different patches. The behavior from checkstyle is
strange. It even reports the checkstyle issues from the file I didn't touch. So
It looks like my first patch MAPREDUCE-6339.000.patch didn't introduce any new
checkstyle issues.
> Job history file is not flushed correctly because isTimerActive flag is not
> set true when flushTimerTask is scheduled.
> ----------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-6339
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6339
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Affects Versions: 2.7.0
> Reporter: zhihai xu
> Assignee: zhihai xu
> Priority: Critical
> Attachments: MAPREDUCE-6339.000.patch, MAPREDUCE-6339.001.patch
>
>
> Job history file is not flushed correctly because isTimerActive flag is not
> set true when flushTimerTask is scheduled.
> It looks like we should set isTimerActive to true when flushTimerTask is
> scheduled. Otherwise if a new qualified event comes before the current flush
> timer is expired, flushTimerTask will be canceled and rescheduled.
> Also I didn't find any code which set isTimerActive flag to true, So
> isTimerActive is useless in current code.
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