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https://issues.apache.org/jira/browse/HDFS-1118?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13089031#comment-13089031
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Jitendra Nath Pandey commented on HDFS-1118:
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+1 for hdfs-1118.20s.patch
> DFSOutputStream socket leak when cannot connect to DataNode
> -----------------------------------------------------------
>
> Key: HDFS-1118
> URL: https://issues.apache.org/jira/browse/HDFS-1118
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 0.20.1, 0.20.2, 0.20-append, 0.21.0
> Reporter: Zheng Shao
> Assignee: Zheng Shao
> Fix For: 0.20-append, 0.20.205.0, 0.22.0
>
> Attachments: HDFS-1118.1.patch, HDFS-1118.2.patch,
> hdfs-1118.20s.patch, trunkPatch.txt
>
>
> The offending code is in {{DFSOutputStream.nextBlockOutputStream}}
> This function retries several times to call {{createBlockOutputStream}}. Each
> time when it fails, it leaves a {{Socket}} object in {{DFSOutputStream.s}}.
> That object is never closed, but overwritten the next time
> {{createBlockOutputStream}} is called.
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