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Posted to issues@hbase.apache.org by "Jimmy Xiang (JIRA)" <ji...@apache.org> on 2013/07/25 22:57:49 UTC

[jira] [Created] (HBASE-9044) Merging regions throws NPE

Jimmy Xiang created HBASE-9044:
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             Summary: Merging regions throws NPE
                 Key: HBASE-9044
                 URL: https://issues.apache.org/jira/browse/HBASE-9044
             Project: HBase
          Issue Type: Bug
            Reporter: Jimmy Xiang
            Assignee: Jimmy Xiang


{noformat}
hbase(main):003:0> merge_region '92ade79eb3ac390b09e2b19c74b56dad', '92ade79eb3ac390b09e2b19c74b56dad'
2013-07-25 13:21:23,991 ERROR [main] client.HBaseAdmin: Unexpected exception: com.google.protobuf.ServiceException: org.apache.hadoop.hbase.ipc.RemoteWithExtrasException(java.lang.NullPointerException): java.lang.NullPointerException
	at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2108)
	at org.apache.hadoop.hbase.ipc.RpcServer$CallRunner.run(RpcServer.java:1809)
	at org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.consumerLoop(SimpleRpcScheduler.java:165)
	at org.apache.hadoop.hbase.ipc.SimpleRpcScheduler.access$000(SimpleRpcScheduler.java:41)
	at org.apache.hadoop.hbase.ipc.SimpleRpcScheduler$1.run(SimpleRpcScheduler.java:113)
	at java.lang.Thread.run(Thread.java:662)
 from calling HMaster.dispatchMergingRegions
0 row(s) in 0.0160 seconds
{noformat}

I also saw the following in the master log:

{noformat}
2013-07-25 13:25:12,683 ERROR [MASTER_TABLE_OPERATIONS-a1220:36000-0] executor.EventHandler: Caught throwable while processing event C_M_MERGE_REGION
java.lang.NullPointerException
        at org.apache.hadoop.hbase.master.handler.DispatchMergingRegionHandler.process(DispatchMergingRegionHandler.java:104)
        at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:130)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
{noformat}

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