[HBASE-5675] Create table fails if we keep refreshing master's UI for task monitor status

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 0.90.4, 0.92.0
• Component/s: master
• Assignee: Unassigned
• Reporter: Mubarak Seyed
• Created: 29/Mar/12 18:05
• Updated: 13/Jun/22 15:40
• Resolved: 29/Mar/12 22:22

Description

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.

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)