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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5099) Namenode#copyEditLogSegmentsToSharedDir should close EditLogInputStreams upon finishing
Date Fri, 16 Aug 2013 14:46:52 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13742277#comment-13742277

Hudson commented on HDFS-5099:

FAILURE: Integrated in Hadoop-Mapreduce-trunk #1520 (See [https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1520/])
HDFS-5099. Namenode#copyEditLogSegmentsToSharedDir should close EditLogInputStreams upon finishing.
Contributed by Chuan Liu. (cnauroth: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1514481)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java

> Namenode#copyEditLogSegmentsToSharedDir should close EditLogInputStreams upon finishing
> ---------------------------------------------------------------------------------------
>                 Key: HDFS-5099
>                 URL: https://issues.apache.org/jira/browse/HDFS-5099
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 3.0.0, 2.1.1-beta
>            Reporter: Chuan Liu
>            Assignee: Chuan Liu
>             Fix For: 3.0.0, 2.1.1-beta
>         Attachments: HDFS-5099-trunk.patch
> In {{Namenode#copyEditLogSegmentsToSharedDir()}} method, we open a collection of EditLogInputStreams
to read and apply to shareEditlog. In {{readOpt()}} method, we will open the underlying log
file on disk. After applying all the opts, we do not close the collection of streams currently.
This lead to a file handle leak on Windows as later we would fail to delete those files.
> This happens in TestInitializeSharedEdits test case, where we explicitly called {{Namenode#
initializeSharedEdits()}}, where {{copyEditLogSegmentsToSharedDir()}} is used. Later we fail
to create new MiniDFSCluster with the following exception.
> {noformat}
> java.io.IOException: Could not fully delete C:\hdc\hadoop-hdfs-project\hadoop-hdfs\target\test\data\dfs\name1
> 	at org.apache.hadoop.hdfs.MiniDFSCluster.createNameNodesAndSetConf(MiniDFSCluster.java:759)
> 	at org.apache.hadoop.hdfs.MiniDFSCluster.initMiniDFSCluster(MiniDFSCluster.java:644)
> 	at org.apache.hadoop.hdfs.MiniDFSCluster.<init>(MiniDFSCluster.java:334)
> 	at org.apache.hadoop.hdfs.MiniDFSCluster$Builder.build(MiniDFSCluster.java:316)
> 	at org.apache.hadoop.hdfs.server.namenode.ha.TestInitializeSharedEdits.setupCluster(TestInitializeSharedEdits.java:68)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> …
> {noformat}

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