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https://issues.apache.org/jira/browse/MAPREDUCE-7112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16579766#comment-16579766
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Zhaohui Xin commented on MAPREDUCE-7112:
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This patch made job-webpage loading very fast, but may cause just finished job 
not found temporarily. 

I suggest make this as an optional configuration to make user decide to use it 
or not.

> When load job history webpage we do not need make cache firstly
> ---------------------------------------------------------------
>
>                 Key: MAPREDUCE-7112
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7112
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: jobhistoryserver
>    Affects Versions: 2.6.0
>            Reporter: Zhaohui Xin
>            Priority: Minor
>         Attachments: MAPREDUCE-7112.patch
>
>
> It's very slow to load job history page because of making cache firstly. 
> Obviously, we should skip this.



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