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From "Mubarak Seyed (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-5675) Create table fails if we keep refreshing master's UI for task monitor status
Date Thu, 29 Mar 2012 18:06:22 GMT
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
            Reporter: Mubarak Seyed


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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