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https://issues.apache.org/jira/browse/HDFS-5669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13966411#comment-13966411
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Hudson commented on HDFS-5669:
------------------------------
SUCCESS: Integrated in Hadoop-Yarn-trunk #537 (See
[https://builds.apache.org/job/Hadoop-Yarn-trunk/537/])
HDFS-5669. Storage#tryLock() should check for null before logging successfull
message. Contributed by Vinayakumar B (umamahesh:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1586392)
* /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/common/Storage.java
> Storage#tryLock() should check for null before logging successfull message
> --------------------------------------------------------------------------
>
> Key: HDFS-5669
> URL: https://issues.apache.org/jira/browse/HDFS-5669
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: datanode
> Affects Versions: 2.2.0
> Reporter: Vinayakumar B
> Assignee: Vinayakumar B
> Fix For: 3.0.0, 2.5.0
>
> Attachments: HDFS-5669.patch, HDFS-5669.patch
>
>
> In the following code in Storage#tryLock(), there is a possibility that
> {{file.getChannel().tryLock()}} returns null if the lock is acquired by some
> other process. In that case even though return value is null, a successfull
> message confuses.
> {code}try {
> res = file.getChannel().tryLock();
> file.write(jvmName.getBytes(Charsets.UTF_8));
> LOG.info("Lock on " + lockF + " acquired by nodename " + jvmName);
> } catch(OverlappingFileLockException oe) {{code}
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