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https://issues.apache.org/jira/browse/HBASE-8490?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Esteban Gutierrez resolved HBASE-8490.
--------------------------------------
Resolution: Duplicate
Assignee: Esteban Gutierrez
> Region mover script can get stuck in infinite loop if UnknownRegionException
> ----------------------------------------------------------------------------
>
> Key: HBASE-8490
> URL: https://issues.apache.org/jira/browse/HBASE-8490
> Project: HBase
> Issue Type: Bug
> Components: shell
> Affects Versions: 0.92.1
> Environment: HBase 0.92.1-cdh4.1.3
> Reporter: Esteban Gutierrez
> Assignee: Esteban Gutierrez
> Priority: Minor
> Labels: noob
>
> {code}
> 13/05/02 23:56:55 INFO region_mover: Moving 1 region(s) from
> procyon-8.nova.cloudera.com,60020,1367530634629 during this cycle
> 13/05/02 23:56:55 INFO region_mover: Moving region
> 588ccd887c699c7c23188a79a3d1807f (0 of 1) to
> server=procyon-5.nova.cloudera.com,60020,1367542172830
> 13/05/02 23:56:55 INFO region_mover: Exception moving
> 588ccd887c699c7c23188a79a3d1807f; split/moved? Continuing:
> java.lang.reflect.UndeclaredThrowableException:
> org.apache.hadoop.hbase.UnknownRegionException:
> 588ccd887c699c7c23188a79a3d1807f
> at org.apache.hadoop.hbase.master.HMaster.move(HMaster.java:1015)
> at sun.reflect.GeneratedMethodAccessor22.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:364)
> at
> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1345)
> {code}
> This was triggered due {{IllegalStateException}} while trying to open an
> unexisting region:
> {code}
> 2013-05-02 16:23:06,558 INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer: Received request to open
> region: TestTable,,1367530404417.588ccd887c699c7c23188a79a3d1
> 807f.
> 2013-05-02 16:23:06,583 INFO org.apache.hadoop.hbase.util.FSUtils:
> hdfs://nameservice1/hbase/TestTable doesn't exist
> 2013-05-02 16:23:06,586 INFO org.apache.hadoop.hbase.util.FSUtils:
> hdfs://nameservice1/hbase/TestTable doesn't exist
> 2013-05-02 16:23:06,586 WARN org.apache.hadoop.hbase.util.FSTableDescriptors:
> The following folder is in HBase's root directory and doesn't contain a table
> descriptor,
> do consider deleting it: TestTable
> 2013-05-02 16:23:06,666 ERROR
> org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler: Failed open
> of region=TestTable,,1367530404417.588ccd887c699c7c23188a79a3
> d1807f.
> java.lang.IllegalStateException: Could not instantiate a region instance.
> at
> org.apache.hadoop.hbase.regionserver.HRegion.newHRegion(HRegion.java:3123)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.openHRegion(HRegion.java:3254)
> at
> org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.openRegion(OpenRegionHandler.java:331)
> at
> org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler.process(OpenRegionHandler.java:107)
> at
> org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:169)
> 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)
> Caused by: java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.newHRegion(HRegion.java:3120)
> ... 7 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.loadTableCoprocessors(RegionCoprocessorHost.java:133)
> at
> org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost.<init>(RegionCoprocessorHost.java:125)
> at org.apache.hadoop.hbase.regionserver.HRegion.<init>(HRegion.java:376)
> ... 12 more
> {code}
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