Details
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Bug
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Status: Resolved
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Major
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Resolution: Fixed
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2.0.0
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None
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Reviewed
Description
Observed this on a cluster:
FATAL org.apache.hadoop.hbase.master.HMaster: Unhandled exception. Starting shutdown. java.lang.NullPointerException at org.apache.hadoop.hbase.master.AssignmentManager.replicaRegionsNotRecordedInMeta(AssignmentManager.java:2799) at org.apache.hadoop.hbase.master.AssignmentManager.assignAllUserRegions(AssignmentManager.java:2778) at org.apache.hadoop.hbase.master.AssignmentManager.processDeadServersAndRegionsInTransition(AssignmentManager.java:638) at org.apache.hadoop.hbase.master.AssignmentManager.joinCluster(AssignmentManager.java:485) at org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:723) at org.apache.hadoop.hbase.master.HMaster.access$500(HMaster.java:169) at org.apache.hadoop.hbase.master.HMaster$1.run(HMaster.java:1481) at java.lang.Thread.run(Thread.java:745)
It looks like FSTableDescriptors#get(…) can be expected to return null in some cases, but AssignmentManager.replicaRegionsNotRecordedInMeta(…) does not currently have any handling for such a possibility.