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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4940) namenode OOMs under Bigtop's TestCLI
Date Fri, 28 Jun 2013 19:40:20 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4940?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13695715#comment-13695715
] 

Colin Patrick McCabe commented on HDFS-4940:
--------------------------------------------

You've got 1 GB of data being held in the 'data' element of a {{org.apache.hadoop.ipc.Server$Connection}}
object.  It looks like it's in the buffer inside the connection.
                
> namenode OOMs under Bigtop's TestCLI
> ------------------------------------
>
>                 Key: HDFS-4940
>                 URL: https://issues.apache.org/jira/browse/HDFS-4940
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.1.0-beta
>            Reporter: Roman Shaposhnik
>            Priority: Blocker
>             Fix For: 2.1.0-beta
>
>
> Bigtop's TestCLI when executed against Hadoop 2.1.0 seems to make it OOM quite reliably
regardless of the heap size settings. I'm attaching a heap dump URL. Alliteratively anybody
can just take Bigtop's tests, compiled them against Hadoop 2.1.0 bits and try to reproduce
it.  

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