[HBASE-13133] NPE when running TestSplitLogManager

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.0.1, 1.1.0, 2.0.0
• Hadoop Flags: Reviewed
• Assignee: Andrey Stepachev
• Reporter: Duo Zhang
• Created: 02/Mar/15 00:31
• Updated: 04/Apr/18 19:28
• Resolved: 02/Mar/15 03:55

Description

https://builds.apache.org/job/HBase-TRUNK/6187/testReport/junit/org.apache.hadoop.hbase.master/TestSplitLogManager/testOrphanTaskAcquisition/

2015-03-01 01:34:58,902 INFO  [Thread-23] master.TestSplitLogManager(298): TestOrphanTaskAcquisition
2015-03-01 01:34:58,904 DEBUG [Thread-23] coordination.ZKSplitLogManagerCoordination(870): Distributed log replay=true
2015-03-01 01:34:58,907 INFO  [Thread-23] coordination.ZKSplitLogManagerCoordination(594): found orphan task orphan%2Ftest%2Fslash
2015-03-01 01:34:58,913 INFO  [Thread-23] coordination.ZKSplitLogManagerCoordination(598): Found 1 orphan tasks and 0 rescan nodes
2015-03-01 01:34:58,913 ERROR [main-EventThread] zookeeper.ClientCnxn$EventThread(613): Caught unexpected throwable
java.lang.NullPointerException
	at org.apache.hadoop.hbase.coordination.ZKSplitLogManagerCoordination.findOrCreateOrphanTask(ZKSplitLogManagerCoordination.java:546)
	at org.apache.hadoop.hbase.coordination.ZKSplitLogManagerCoordination.heartbeat(ZKSplitLogManagerCoordination.java:556)
	at org.apache.hadoop.hbase.coordination.ZKSplitLogManagerCoordination.getDataSetWatchSuccess(ZKSplitLogManagerCoordination.java:467)
	at org.apache.hadoop.hbase.coordination.ZKSplitLogManagerCoordination.access$700(ZKSplitLogManagerCoordination.java:74)
	at org.apache.hadoop.hbase.coordination.ZKSplitLogManagerCoordination$GetDataAsyncCallback.processResult(ZKSplitLogManagerCoordination.java:1020)
	at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:561)
	at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)

I got this NPE almost every time when running TestSplitLogManager locally. I am not sure whether it is the root cause of test failing, but seems related.