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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2907) dead datanodes because of OutOfMemoryError
Date Thu, 28 Feb 2008 18:17:57 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2907?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12573389#action_12573389
] 

Doug Cutting commented on HADOOP-2907:
--------------------------------------

Recall that running out of file handles can also throw OutOfMemoryError, as well as a few
other conditions.  How much memory is the process actually using?

> dead datanodes because of OutOfMemoryError
> ------------------------------------------
>
>                 Key: HADOOP-2907
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2907
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.16.0
>            Reporter: Christian Kunz
>
> We see more dead datanodes than in previous releases. The common exception is found in
the out file:
> Exception in thread "org.apache.hadoop.dfs.DataBlockScanner@18166e5" java.lang.OutOfMemoryError:
Java heap space
> Exception in thread "DataNode: [dfs.data.dir-value]" java.lang.OutOfMemoryError: Java
heap space

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