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ryan rawson commented on HDFS-1002: ----------------------------------- I forgot, this is a hadoop 0.21 build, based on SVN revision 901028, its from http://github.com/apache/hadoop-hdfs/commit/de5d50187a34d35e5e1a9ea8bfa1a2fedb9a7df4 which is actually https://svn.apache.org/repos/asf/hadoop/hdfs/branches/branch-0...@901028 Inspecting the code on my systems also verifies that yes we have this commit: http://svn.apache.org/viewvc/hadoop/hdfs/branches/branch-0.21/src/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java?p2=/hadoop/hdfs/branches/branch-0.21/src/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java&p1=/hadoop/hdfs/branches/branch-0.21/src/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java&r1=824955&r2=824954&view=diff&pathrev=824955 > Secondary Name Node crash, NPE in edit log replay > ------------------------------------------------- > > Key: HDFS-1002 > URL: https://issues.apache.org/jira/browse/HDFS-1002 > Project: Hadoop HDFS > Issue Type: Bug > Affects Versions: 0.21.0 > Reporter: ryan rawson > Fix For: 0.21.0 > > Attachments: snn_crash.tar.gz, snn_log.txt > > > An NPE in SNN, the core of the message looks like yay so: > 2010-02-25 11:54:05,834 ERROR > org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode: > java.lang.NullPointerException > at > org.apache.hadoop.hdfs.server.namenode.FSDirectory.addChild(FSDirectory.java:1152) > at > org.apache.hadoop.hdfs.server.namenode.FSDirectory.addChild(FSDirectory.java:1164) > at > org.apache.hadoop.hdfs.server.namenode.FSDirectory.addNode(FSDirectory.java:1067) > at > org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedAddFile(FSDirectory.java:213) > at > org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadEditRecords(FSEditLog.java:511) > at > org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadFSEdits(FSEditLog.java:401) > at > org.apache.hadoop.hdfs.server.namenode.FSEditLog.loadFSEdits(FSEditLog.java:368) > at > org.apache.hadoop.hdfs.server.namenode.FSImage.loadFSEdits(FSImage.java:1172) > at > org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.doMerge(SecondaryNameNode.java:594) > at > org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage.access$000(SecondaryNameNode.java:476) > at > org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doMerge(SecondaryNameNode.java:353) > at > org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.doCheckpoint(SecondaryNameNode.java:317) > at > org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode.run(SecondaryNameNode.java:219) > at java.lang.Thread.run(Thread.java:619) > This happens even if I restart SNN over and over again. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.