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https://issues.apache.org/jira/browse/MAPREDUCE-4758?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Karthik Kambatla updated MAPREDUCE-4758:
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Target Version/s: 2.6.0 (was: 3.0.0, 2.5.0)
> jobhistory web ui not showing correct # failed reducers
> -------------------------------------------------------
>
> Key: MAPREDUCE-4758
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4758
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobhistoryserver, webapps
> Affects Versions: 0.23.4
> Reporter: Thomas Graves
> Priority: Critical
>
> we had a job fail due to a reducer failing 4 times. Unfortunately the job
> history UI didn't show this particular failed reducer which lead to
> confusion as to why the job failed.
> This reducer failed to launch all 4 task attempts with a Token Expiration
> error and the jobhistory file only gets an event when the task attempt
> transitions to launched. The webapp JobInfo object only counts the task
> attempts in the jobhistory file to display under the "Attempt Type" table, so
> since this task didn't have an attempt with it, it did show it on the UI.
> We need to reconcile the task list with the task attempts or also shows more
> stats for the tasks vs task attempts.
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