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Hudson commented on HDFS-2533: ------------------------------ Integrated in Hadoop-Hdfs-trunk #852 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/852/]) HDFS-2533. Remove needless synchronization on some FSDataSet methods. Contributed by Todd Lipcon. todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1196902 Files : * /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/datanode/FSDataset.java > Remove needless synchronization on FSDataSet.getBlockFile > --------------------------------------------------------- > > Key: HDFS-2533 > URL: https://issues.apache.org/jira/browse/HDFS-2533 > Project: Hadoop HDFS > Issue Type: Improvement > Components: data-node, performance > Affects Versions: 0.23.0 > Reporter: Todd Lipcon > Assignee: Todd Lipcon > Priority: Minor > Fix For: 0.24.0, 0.23.1 > > Attachments: hdfs-2533.txt, hdfs-2533.txt > > > HDFS-1148 discusses lock contention issues in FSDataset. It provides a more > comprehensive fix, converting it all to RWLocks, etc. This JIRA is for one > very specific fix which gives a decent performance improvement for > TestParallelRead: getBlockFile() currently holds the lock which is completely > unnecessary. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira