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Eli Collins commented on HDFS-3664: ----------------------------------- Here's the relevant portion of the log: 2012-07-14 20:28:44,991 INFO namenode.FSNamesystem (FSNamesystem.java:stopActiveServices(673)) - Stopping services started for active state 2012-07-14 20:28:44,991 WARN blockmanagement.DecommissionManager (DecommissionManager.java:run(78)) - Monitor interrupted: java.lang.InterruptedException: sleep interrupted 2012-07-14 20:28:44,991 INFO namenode.FSNamesystem (FSNamesystem.java:stopStandbyServices(731)) - Stopping services started for standby state 2012-07-14 20:28:44,992 WARN ipc.Server (Server.java:run(1706)) - IPC Server handler 2 on 58865, call org.apache.hadoop.hdfs.protocol.ClientProtocol.addBlock from 127.0.0.1:60713: error: java.lang.NullPointerException java.lang.NullPointerException at org.apache.hadoop.hdfs.server.blockmanagement.BlocksMap.getBlockCollection(BlocksMap.java:98) at org.apache.hadoop.hdfs.server.blockmanagement.BlockManager.getBlockCollection(BlockManager.java:2893) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.isValidBlock(FSNamesystem.java:4437) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.allocateBlock(FSNamesystem.java:2409) at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:2170) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.addBlock(NameNodeRpcServer.java:470) at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.addBlock(ClientNamenodeProtocolServerSideTranslatorPB.java:292) at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:42602) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:452) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:898) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1693) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1689) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1332) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1687) > TestPersistBlocks#TestRestartDfsWithFlush failed with NPE > --------------------------------------------------------- > > Key: HDFS-3664 > URL: https://issues.apache.org/jira/browse/HDFS-3664 > Project: Hadoop HDFS > Issue Type: Bug > Components: test > Reporter: Eli Collins > > Looks like there's a race hit by the test where we try to allocate a block > after BlocksMap#close, resulting in an NPE. -- 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