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Posted to mapreduce-issues@hadoop.apache.org by "Robert Kanter (JIRA)" <ji...@apache.org> on 2016/07/12 20:59:20 UTC
[jira] [Commented] (MAPREDUCE-6652) Add configuration property to
prevent JHS from loading jobs with a task count greater than X
[ https://issues.apache.org/jira/browse/MAPREDUCE-6652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15373673#comment-15373673 ]
Robert Kanter commented on MAPREDUCE-6652:
------------------------------------------
+1
> 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
> Attachments: mapreduce6652.001.patch, mapreduce6652.002.patch, mapreduce6652.003.patch, mapreduce6652.004.patch, mapreduce6652.005.patch, mapreduce6652.007.branch2.patch, mapreduce6652.007.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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