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From "Robert Kanter (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-6652) Add configuration property to prevent JHS from loading jobs with a task count greater than X
Date Fri, 15 Jul 2016 20:38:20 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-6652?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Robert Kanter resolved MAPREDUCE-6652.
       Resolution: Fixed
     Hadoop Flags: Reviewed
    Fix Version/s: 2.9.0

Thanks [~haibochen].  And [~rchiang] for reviewing too.

Committed to trunk and branch-2!

> Add configuration property to prevent JHS from loading jobs with a task count greater
than X
> --------------------------------------------------------------------------------------------
>                 Key: MAPREDUCE-6652
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6652
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: jobhistoryserver
>            Reporter: Haibo Chen
>            Assignee: Haibo Chen
>             Fix For: 2.9.0
>         Attachments: mapreduce6652.001.patch, mapreduce6652.002.patch, mapreduce6652.003.patch,
mapreduce6652.004.patch, mapreduce6652.005.patch, mapreduce6652.007.branch2.patch, mapreduce6652.007.patch,
mapreduce6652.008.branch2.patch, mapreduce6652.008.patch, mapreduce6652.009.branch2.patch,
> Jobs with large number of tasks can have job history files that are large in size and
resource-consuming(mainly memory) to parse in Job History Server. If there are many such jobs,
the job history server can very easily hang.
> It would be a good usability feature if we added a new config property that could be
set to X, where the JHS wouldn't load the details for a job with more than X tasks. The job
would still show up on the list of jobs page, but clicking on it would give a warning message
that the job is too big, instead of actually loading the job. This way we can prevent users
from loading a job that's way too big for the JHS, which currently makes the JHS hang. The
default value can be -1 so that it's disabled.

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