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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9898) Set SO_KEEPALIVE on all our sockets
Date Thu, 31 Oct 2013 21:16:18 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9898?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13810715#comment-13810715
] 

Hudson commented on HADOOP-9898:
--------------------------------

SUCCESS: Integrated in Hadoop-trunk-Commit #4682 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/4682/])
HADOOP-9898. Set SO_KEEPALIVE on all our sockets. Contributed by Todd Lipcon. (wang: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1537637)
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Client.java
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java


> Set SO_KEEPALIVE on all our sockets
> -----------------------------------
>
>                 Key: HADOOP-9898
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9898
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ipc, net
>    Affects Versions: 3.0.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Minor
>             Fix For: 2.2.1
>
>         Attachments: hadoop-9898.txt
>
>
> We recently saw an issue where network issues between slaves and the NN caused ESTABLISHED
TCP connections to pile up and leak on the NN side. It looks like the RST packets were getting
dropped, which meant that the client thought the connections were closed, while they hung
open forever on the server.
> Setting the SO_KEEPALIVE option on our sockets would prevent this kind of leak from going
unchecked.



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