Esteban Gutierrez created HBASE-8490:
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Summary: 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
Priority: Minor
{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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