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https://issues.apache.org/jira/browse/HADOOP-3071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12581230#action_12581230
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Raghu Angadi commented on HADOOP-3071:
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This does not affect 0.16. Closing s.getOutputStream() also closes the socket
(not just the otherway round). o.a.h.SocketOutputStream() should do the same.
But still I think patch is good as it is.. it cleans up the code a bit and
closes the socket if connection fails inside createBlockOutputStream().
> DFSOutputStream does not close all the sockets
> ----------------------------------------------
>
> Key: HADOOP-3071
> URL: https://issues.apache.org/jira/browse/HADOOP-3071
> Project: Hadoop Core
> Issue Type: Bug
> Affects Versions: 0.17.0
> Reporter: Raghu Angadi
> Assignee: Raghu Angadi
> Fix For: 0.17.0
>
> Attachments: HADOOP-3071.patch
>
>
> When DFSOutputStream writes to multiple blocks, it closes only the socket
> opened for the last block. When it is done with writing to one block it
> should close the socket.
> I noticed this when I was fixing HADOOP-3067. After fixing HADOOP-3067, there
> were still a lot of sockets open (but not enough to fail the tests). These
> sockets were used to write to blocks.
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