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From "Jonathan Hsieh (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5675) Create table fails if we keep refreshing master's UI for task monitor status
Date Thu, 29 Mar 2012 22:19:29 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5675?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13241866#comment-13241866
] 

Jonathan Hsieh commented on HBASE-5675:
---------------------------------------

The fix was in HBASE-5535 and in the 0.94 branch and above.  I'll mark this issue as duplicate,
and get it added into the issues to fix in CDH. 
                
> Create table fails if we keep refreshing master's UI for task monitor status
> ----------------------------------------------------------------------------
>
>                 Key: HBASE-5675
>                 URL: https://issues.apache.org/jira/browse/HBASE-5675
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.90.4, 0.92.0, 0.94.0
>            Reporter: Mubarak Seyed
>            Assignee: Mubarak Seyed
>              Labels: noob
>
> I tried to create a table with 2K pre-split regions, region assignment was in middle
and i was keep refreshing master's web UI to find the status of the task using task monitor,
table creation was failed and {{META}} was showing 2K regions with server location value is
{{null}} and regions weren't deployed onto region-servers.
> {code}
> table_ACreating table table_A
> java.io.IOException: java.io.IOException: java.util.ConcurrentModificationException
> 	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.ipc.RemoteException.instantiateException(RemoteException.java:95)
> 	at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:79)
> 	at org.apache.hadoop.hbase.client.HBaseAdmin.createTableAsync(HBaseAdmin.java:384)
> 	at org.apache.hadoop.hbase.client.HBaseAdmin.createTable(HBaseAdmin.java:294)
> 	at com.test.tools.hbase.schema.createIfNotExists(schema.java:520)
> 	at com.test.tools.hbase.schema.main(schema.java:627)
> Caused by: org.apache.hadoop.ipc.RemoteException: java.io.IOException: java.util.ConcurrentModificationException
> 	at java.util.SubList.checkForComodification(AbstractList.java:752)
> 	at java.util.SubList.add(AbstractList.java:632)
> 	at java.util.SubList.add(AbstractList.java:633)
> 	at java.util.SubList.add(AbstractList.java:633)
> 	..
> 	..
> 	at java.util.SubList.add(AbstractList.java:633)
> 	at java.util.AbstractList.add(AbstractList.java:91)
> 	at org.apache.hadoop.hbase.monitoring.TaskMonitor.createStatus(TaskMonitor.java:76)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.close(HRegion.java:510)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.close(HRegion.java:490)
> 	at org.apache.hadoop.hbase.master.HMaster.createTable(HMaster.java:853)
> 	at org.apache.hadoop.hbase.master.HMaster.createTable(HMaster.java:813)
> 	at org.apache.hadoop.hbase.master.HMaster.createTable(HMaster.java:780)
> 	at sun.reflect.GeneratedMethodAccessor27.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.HBaseRPC$Server.call(HBaseRPC.java:570)
> 	at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1039)
> 	at org.apache.hadoop.hbase.ipc.HBaseClient.call(HBaseClient.java:771)
> 	at org.apache.hadoop.hbase.ipc.HBaseRPC$Invoker.invoke(HBaseRPC.java:257)
> 	at $Proxy5.createTable(Unknown Source)
> 	at org.apache.hadoop.hbase.client.HBaseAdmin.createTableAsync(HBaseAdmin.java:382)	
> {code}

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