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Hudson commented on HDFS-1542: ------------------------------ Integrated in Hadoop-Hdfs-trunk #643 (See [https://builds.apache.org/hudson/job/Hadoop-Hdfs-trunk/643/]) > Deadlock in Configuration.writeXml when serialized form is larger than one > DFS block > ------------------------------------------------------------------------------------ > > Key: HDFS-1542 > URL: https://issues.apache.org/jira/browse/HDFS-1542 > Project: Hadoop HDFS > Issue Type: Bug > Components: hdfs client > Affects Versions: 0.22.0, 0.23.0 > Reporter: Todd Lipcon > Assignee: Todd Lipcon > Priority: Critical > Fix For: 0.22.0 > > Attachments: Test.java, deadlock.txt, hdfs-1542.txt, hdfs-1542.txt, > hdfs-1542.txt, hdfs-1542.txt, hdfs1542_cdh3b3.txt > > > Configuration.writeXml holds a lock on itself and then writes the XML to an > output stream, during which DFSOutputStream will try to get a lock on > ackQueue/dataQueue. Meanwihle the DataStreamer thread will call functions > like conf.getInt() and deadlock against the other thread, since it could be > the same conf object. > This causes a deterministic deadlock whenever the serialized form is larger > than block size. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira