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https://issues.apache.org/jira/browse/HDFS-3981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13626578#comment-13626578
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Hudson commented on HDFS-3981:
------------------------------
Integrated in Hadoop-Mapreduce-trunk #1394 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1394/])
HDFS-3981. Fix handling of FSN lock in getBlockLocations. Contributed by
Xiaobo Peng and Todd Lipcon. (Revision 1465751)
Result = FAILURE
todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1465751
Files :
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/test/MockitoUtil.java
* /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/FSNamesystem.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestSetTimes.java
> access time is set without holding FSNamesystem write lock
> ----------------------------------------------------------
>
> Key: HDFS-3981
> URL: https://issues.apache.org/jira/browse/HDFS-3981
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 0.23.3, 2.0.3-alpha, 0.23.5
> Reporter: Xiaobo Peng
> Assignee: Xiaobo Peng
> Fix For: 3.0.0, 2.0.5-beta
>
> Attachments: HDFS-3981-branch-0.23.4.patch,
> HDFS-3981-branch-0.23.patch, HDFS-3981-branch-2.patch, HDFS-3981-trunk.patch,
> hdfs-3981.txt
>
>
> Incorrect condition in {{FSNamesystem.getBlockLocatoins()}} can lead to
> updating times without write lock. In most cases this condition will force
> {{FSNamesystem.getBlockLocatoins()}} to hold write lock, even if times do not
> need to be updated.
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