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https://issues.apache.org/jira/browse/HADOOP-3067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12582620#action_12582620
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Hudson commented on HADOOP-3067:
--------------------------------
Integrated in Hadoop-trunk #443 (See
[http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/443/])
> DFSInputStream 'pread' does not close its sockets
> -------------------------------------------------
>
> Key: HADOOP-3067
> URL: https://issues.apache.org/jira/browse/HADOOP-3067
> Project: Hadoop Core
> Issue Type: Bug
> Components: dfs
> Reporter: Raghu Angadi
> Assignee: Raghu Angadi
> Priority: Blocker
> Fix For: 0.17.0
>
> Attachments: HADOOP-3067.patch, HADOOP-3067.patch
>
>
> {{DFSInputStream.read(int, buffer)}} does not close the sockets it opens.
> Main reason this problem did not show up till now is that pread interface is
> not used much.
> TestCrcCorruption failure first reported in HADOOP-2902 is caused by this
> bug. Hadoop 0.17 uses more file descriptors for each thread waiting on socket
> io. Since client does not close sockets, it leaves a lot of DataNode threads
> waiting in the unit test.
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