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https://issues.apache.org/jira/browse/HBASE-459?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12573449#action_12573449
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Bryan Duxbury commented on HBASE-459:
-------------------------------------
What version was this test run on? Trunk? Before or after RegionManager
refactoring? If 0.2.0, after refactor, then it's possible this issue is because
of some of the ugliness in HBASE-473. If regions were unreasonably being
offlined over and over, it's possible that you'd get WREs because an expected
region would never be online.
> WrongRegionException should be like NSRE exception?
> ---------------------------------------------------
>
> Key: HBASE-459
> URL: https://issues.apache.org/jira/browse/HBASE-459
> Project: Hadoop HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 0.1.0, 0.2.0
> Reporter: stack
> Priority: Blocker
>
> Jim was just running a loading test. It failed because of a
> WrongRegionException. At first I thought it HBASE-428 -- because we were
> making regions w/ same start and end key -- but looking closer, it looks like
> the client is getting a WRE thought its making a legitimate request; it just
> happens to be asking for a row from the top-half of a region just as it
> split. I would think that on WRE, the client would at least retry in same
> manner in which it does when it gets a NSRE?
> Here is the split detail:
> {code}
> 2008-02-21 19:15:11,747 INFO [regionserver/0:0:0:0:0:0:0:0:8020.compactor]
> hbase.HRegionServer$CompactSplitThread(345): region split, META updated, and
> report to master all successful. Old region=regionname:
> TestTable,0018951818,1203620807290, startKey: <0018951818>, endKey:
> <0022085183>, encodedName: 1601381187, offline: true, split: true, tableDesc:
> {name: TestTable, families: {info:={name: info, max versions: 3, compression:
> NONE, in memory: false, block cache enabled: false, max length: 2147483647,
> bloom filter: none}}}, new regions: TestTable,0018951818,1203621311590,
> TestTable,0020990296,1203621311590. Split took 0sec
> {code}
> Here is the WRE:
> {code}
> org.apache.hadoop.hbase.WrongRegionException:
> org.apache.hadoop.hbase.WrongRegionException: Requested row out of range for
> HRegion TestTable,0018951818,1203620807290, startKey='0018951818',
> getEndKey()='0022085183', row='0062914560'
> at org.apache.hadoop.hbase.HRegion.checkRow(HRegion.java:1496)
> at org.apache.hadoop.hbase.HRegion.obtainRowLock(HRegion.java:1541)
> at org.apache.hadoop.hbase.HRegion.batchUpdate(HRegion.java:1236)
> at
> org.apache.hadoop.hbase.HRegionServer.batchUpdate(HRegionServer.java:1450)
> at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> at java.lang.reflect.Method.invoke(Unknown Source)
> at org.apache.hadoop.hbase.ipc.HbaseRPC$Server.call(HbaseRPC.java:413)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:910)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
> Source)
> at java.lang.reflect.Constructor.newInstance(Unknown Source)
> at
> org.apache.hadoop.hbase.RemoteExceptionHandler.decodeRemoteException(RemoteExceptionHandler.java:82)
> at
> org.apache.hadoop.hbase.client.HTable.getRegionServerWithRetries(HTable.java:1008)
> at org.apache.hadoop.hbase.client.HTable.commit(HTable.java:751)
> at org.apache.hadoop.hbase.client.HTable.commit(HTable.java:740)
> at org.apache.hadoop.hbase.client.HTable.commit(HTable.java:721)
> at
> org.apache.hadoop.hbase.PerformanceEvaluation$SequentialWriteTest.testRow(PerformanceEvaluation.java:463)
> at
> org.apache.hadoop.hbase.PerformanceEvaluation$Test.test(PerformanceEvaluation.java:331)
> at
> org.apache.hadoop.hbase.PerformanceEvaluation.runOneClient(PerformanceEvaluation.java:527)
> at
> org.apache.hadoop.hbase.PerformanceEvaluation$EvaluationMapTask.map(PerformanceEvaluation.java:176)
> at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:50)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:208)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2071)
> {code}
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