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https://issues.apache.org/jira/browse/MAPREDUCE-6892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16140481#comment-16140481
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Haibo Chen commented on MAPREDUCE-6892:
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Thanks @Peter for the update, I'll wait for you to fix the test failure before
I review.
I do think the default value for killed failed should be -1 in the schema. -1
means not available/known IIUC.
In our case, the killed and failed counters were not recorded previously, thus
I think -1 makes more sense.
> Issues with the count of failed/killed tasks in the jhist file
> --------------------------------------------------------------
>
> Key: MAPREDUCE-6892
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6892
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: client, jobhistoryserver
> Reporter: Peter Bacsko
> Assignee: Peter Bacsko
> Attachments: MAPREDUCE-6892-001.patch, MAPREDUCE-6892-002.PATCH,
> MAPREDUCE-6892-003.patch, MAPREDUCE-6892-004.patch
>
>
> Recently we encountered some issues with the value of failed tasks. After
> parsing the jhist file, {{JobInfo.getFailedMaps()}} returned 0, but actually
> there were failures.
> Another minor thing is that you cannot get the number of killed tasks
> (although this can be calculated).
> The root cause is that {{JobUnsuccessfulCompletionEvent}} contains only the
> successful map/reduce task counts. Number of failed (or killed) tasks are not
> stored.
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