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https://issues.apache.org/jira/browse/MAPREDUCE-3057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13127755#comment-13127755
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Eric Payne commented on MAPREDUCE-3057:
---------------------------------------

It doesn't look like loadedjobs.cache.size is in mapred-default.xml, unless I'm 
missing something. Should I add it?
                
> Job History Server goes of OutOfMemory with 1200 Jobs and Heap Size set to 10 
> GB
> --------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3057
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3057
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobhistoryserver, mrv2
>    Affects Versions: 0.23.0
>            Reporter: Karam Singh
>            Assignee: Eric Payne
>            Priority: Blocker
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-3057.v1.txt
>
>
> History server was started with -Xmx10000m
> Ran GridMix V3 with 1200 Jobs trace in STRESS mode on 350 nodes with each 
> node 4 NMS.
> All jobs finished as reported by RM Web UI and HADOOP_MAPRED_HOME/bin/mapred 
> job -list all
> But found that GridMix job client was stuck while trying connect to 
> HistoryServer
> Then tried to do HADOOP_MAPRED_HOME/bin/mapred job -status jobid
> JobClient also got stuck while looking for token to connect to History server
> Then looked at History Server logs and found History is trowing 
> "java.lang.OutOfMemoryError: GC overhead limit exceeded" error.
> With 10GB of Heap space and 1200 Jobs, History Server should not go out of 
> memory .
> No matter what are the type of jobs.

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