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https://issues.apache.org/jira/browse/HADOOP-2309?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jim Kellerman updated HADOOP-2309:
----------------------------------
Fix Version/s: 0.16.0
Affects Version/s: 0.16.0
Status: Patch Available (was: Open)
> [hbase] ConcurrentModificationException doing get of all region start keys
> --------------------------------------------------------------------------
>
> Key: HADOOP-2309
> URL: https://issues.apache.org/jira/browse/HADOOP-2309
> Project: Hadoop
> Issue Type: Bug
> Components: contrib/hbase
> Affects Versions: 0.16.0
> Reporter: stack
> Assignee: Jim Kellerman
> Priority: Minor
> Fix For: 0.16.0
>
> Attachments: patch.txt
>
>
> Reported by Paul Saab:
> {code}
> I'm getting the following exception when getting the start key from every
> table. If I try to grab it again, it will succeed. Is this a bug or do you
> need to catch these sort of exceptions in my code?...
> Looking for key: img529/6013/46da7e3f111daje2.jpg
> Exception in thread "main" java.io.IOException: java.io.IOException:
> java.util.ConcurrentModificationException
> at java.util.TreeMap$NavigableSubMap$SubMapIterator.nextEntry
> (TreeMap.java:1572)
> at
> java.util.TreeMap$NavigableSubMap$SubMapEntryIterator.next(TreeMap.java:1620)
> at
> java.util.TreeMap$NavigableSubMap$SubMapEntryIterator.next(TreeMap.java:1614)
> at org.apache.hadoop.hbase.HStore$Memcache.internalGet (HStore.java:223)
> at org.apache.hadoop.hbase.HStore$Memcache.get(HStore.java:152)
> at org.apache.hadoop.hbase.HStore.get(HStore.java:1490)
> at org.apache.hadoop.hbase.HRegion.get(HRegion.java:1002)
> at org.apache.hadoop.hbase.HRegion.get(HRegion.java:959)
> at org.apache.hadoop.hbase.HRegionServer.get(HRegionServer.java:1233)
> at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke
> (DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:379)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java :596)
> 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.RemoteExceptionHandler.decodeRemoteException(RemoteExceptionHandler.java
> :82)
> at org.apache.hadoop.hbase.HTable.get(HTable.java:202)
> at us.imageshack.hbase.ListRegions.run(ListRegions.java:25)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> at us.imageshack.hbase.ListRegions.main (ListRegions.java:38)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke
> (DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:155)
> {code}
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