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From "Robert Joseph Evans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3373) FileContext HDFS implementation can leak socket caches
Date Fri, 28 Sep 2012 15:21:08 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3373?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13465670#comment-13465670
] 

Robert Joseph Evans commented on HDFS-3373:
-------------------------------------------

The 0.23 patch looks like a fairly straight forward port of the trunk version, but what happened
to hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSocketCache.java?
                
> FileContext HDFS implementation can leak socket caches
> ------------------------------------------------------
>
>                 Key: HDFS-3373
>                 URL: https://issues.apache.org/jira/browse/HDFS-3373
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs client
>    Affects Versions: 0.23.3, 2.0.0-alpha, 3.0.0
>            Reporter: Todd Lipcon
>            Assignee: John George
>             Fix For: 2.0.3-alpha
>
>         Attachments: HDFS-3373.branch-23.patch, HDFS-3373.branch23.patch, HDFS-3373.trunk.patch,
HDFS-3373.trunk.patch.1, HDFS-3373.trunk.patch.2, HDFS-3373.trunk.patch.3, HDFS-3373.trunk.patch.3,
HDFS-3373.trunk.patch.4
>
>
> As noted by Nicholas in HDFS-3359, FileContext doesn't have a close() method, and thus
never calls DFSClient.close(). This means that, until finalizers run, DFSClient will hold
on to its SocketCache object and potentially have a lot of outstanding sockets/fds held on
to.

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