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From "Jimmy Xiang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-9044) Merging regions throws NPE
Date Fri, 26 Jul 2013 22:33:49 GMT

     [ https://issues.apache.org/jira/browse/HBASE-9044?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jimmy Xiang updated HBASE-9044:
-------------------------------

    Fix Version/s: 0.95.2
                   0.98.0
           Status: Patch Available  (was: Open)
    
> 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
>             Fix For: 0.98.0, 0.95.2
>
>         Attachments: trunk-9044.patch, trunk-9044_v2.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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