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From "Siddharth Seth (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3966) Add separate cache for CompletedJobs with tasks loaded and without tasks loaded in JobHIstoryServer
Date Mon, 05 Mar 2012 18:29:58 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3966?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13222486#comment-13222486
] 

Siddharth Seth commented on MAPREDUCE-3966:
-------------------------------------------

Instead of separating the caches, we could just cache the parsed jobInfo instances (currently
caching CompletedJob), and construct CompletedJob,Task etc when required. That's not too expensive
and would simplify the cache.
                
> Add separate cache for CompletedJobs with tasks loaded and without tasks loaded in JobHIstoryServer
> ---------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3966
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3966
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobhistoryserver, mrv2
>    Affects Versions: 0.23.1
>            Reporter: Vinod Kumar Vavilapalli
>
> After MAPREDUCE-3901, we should have separate caches for list of CompletedJob with tasks
loaded and list of CompletedJob without tasks loaded. Once we have separate cache, we should
increase the cache size for the list which doesn't load tasks.

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