Eli Collins created HDFS-3936:
---------------------------------
Summary: MiniDFSCluster shutdown may fail due to
BlocksMap#getBlockCollection NPE
Key: HDFS-3936
URL: https://issues.apache.org/jira/browse/HDFS-3936
Project: Hadoop HDFS
Issue Type: Bug
Affects Versions: 2.0.0-alpha
Reporter: Eli Collins
Assignee: Eli Collins
Looks like HDFS-3664 didn't fix the whole issue because the added join times
out because the thread closing the BM (FSN#stopCommonServices) holds the FSN
lock while closing the BM and the BM is block uninterruptedly trying to aquire
the FSN lock.
{noformat}
2012-09-13 18:54:12,526 FATAL hdfs.MiniDFSCluster
(MiniDFSCluster.java:shutdown(1355)) - Test resulted in an unexpected exit
org.apache.hadoop.util.ExitUtil$ExitException: Fatal exception with message null
stack trace
java.lang.NullPointerException
at
org.apache.hadoop.hdfs.server.blockmanagement.BlocksMap.getBlockCollection(BlocksMap.java:101)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeReplicationWorkForBlocks(BlockManager.java:1132)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeReplicationWork(BlockManager.java:1107)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.computeDatanodeWork(BlockManager.java:3061)
at
org.apache.hadoop.hdfs.server.blockmanagement.BlockManager$ReplicationMonitor.run(BlockManager.java:3023)
at java.lang.Thread.run(Thread.java:662)
{noformat}
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
