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Posted to mapreduce-issues@hadoop.apache.org by "Mahadev konar (Issue Comment Edited) (JIRA)" <ji...@apache.org> on 2011/10/14 04:14:12 UTC

[jira] [Issue Comment Edited] (MAPREDUCE-3057) Job History Server goes of OutOfMemory with 1200 Jobs and Heap Size set to 10 GB

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13127243#comment-13127243 ] 

Mahadev konar edited comment on MAPREDUCE-3057 at 10/14/11 2:12 AM:
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Assuming 25K jobs per day (on a really large cluster), we can keep the last 30 mins of jobs in memory (== 500)? Just a suggestion, am fine either way.
                
      was (Author: mahadev):
    Assuming 25K jobs per day (on a really large cluster), we can keep the last 30 mins of jobs in memory (== 500)? Just a suggestion, am fine either way is fine.
                  
> 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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