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https://issues.apache.org/jira/browse/HBASE-9044?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jimmy Xiang updated HBASE-9044:
-------------------------------
Status: Open (was: Patch Available)
Sure, will add a MergeRegionException. Thanks.
> 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
> Attachments: trunk-9044.patch
>
>
> {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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