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https://issues.apache.org/jira/browse/HDFS-3359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13268950#comment-13268950
]
Hudson commented on HDFS-3359:
------------------------------
Integrated in Hadoop-Hdfs-0.23-Build #248 (See
[https://builds.apache.org/job/Hadoop-Hdfs-0.23-Build/248/])
HDFS-3359. DFSClient.close should close cached sockets. Contributed by Todd
Lipcon. (Revision 1334049)
Result = SUCCESS
todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1334049
Files :
*
/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSClient.java
*
/hadoop/common/branches/branch-0.23/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDistributedFileSystem.java
> DFSClient.close should close cached sockets
> -------------------------------------------
>
> Key: HDFS-3359
> URL: https://issues.apache.org/jira/browse/HDFS-3359
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs client
> Affects Versions: 0.22.0, 2.0.0
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Critical
> Fix For: 0.23.3, 2.0.0
>
> Attachments: hdfs-3359-branch-0.23.txt, hdfs-3359.txt, hdfs-3359.txt
>
>
> Some applications like the TT/JT (pre-2.0) and probably the RM/NM cycle
> through DistributedFileSystem objects reasonably frequently. So long as they
> call close() it isn't a big problem, except that currently DFSClient.close()
> doesn't explicitly close the SocketCache. So unless a full GC runs (causing
> the references to get finalized), many SocketCaches can get orphaned, each
> with many open sockets inside. We should fix the close() function to close
> all cached sockets.
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