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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-2515) ChangeTableState considers split&&offline regions as being served
Date Wed, 05 May 2010 00:46:06 GMT
ChangeTableState considers split&&offline regions as being served
-----------------------------------------------------------------

                 Key: HBASE-2515
                 URL: https://issues.apache.org/jira/browse/HBASE-2515
             Project: Hadoop HBase
          Issue Type: Bug
            Reporter: Jean-Daniel Cryans
            Assignee: Jean-Daniel Cryans
            Priority: Critical
             Fix For: 0.20.5, 0.21.0


A region is considered as being serverd and unserved at the same time in the ChangeTableState
(and TableOperation) class. This translates to logs like this:

{code}
2010-05-04 17:26:01,073 INFO org.apache.hadoop.hbase.master.ServerManager: Processing MSG_REPORT_SPLIT_INCLUDES_DAUGHTERS:
TestTable,0000518811,1273019008135: Daughters; 
TestTable,0000518811,1273019159867, TestTable,0000584541,1273019159867 from 10.10.1.177,60020,1273018776034;
1 of 1
<<disable is called>>
2010-05-04 17:26:25,893 DEBUG org.apache.hadoop.hbase.master.ChangeTableState: Skipping region
REGION => {NAME => 'TestTable,0000518811,1273019008135', STARTKEY => '0000518811',
ENDKEY => '0000650817', 
ENCODED => 143183187, OFFLINE => true, SPLIT => true, TABLE => {{NAME => 'TestTable',
FAMILIES => [{NAME => 'info', VERSIONS => '3', COMPRESSION => 'NONE', TTL =>
'2147483647', BLOCKSIZE => '65536', IN_MEMORY => 
'false', BLOCKCACHE => 'true'}]}} because it is offline and split
2010-05-04 17:26:25,902 DEBUG org.apache.hadoop.hbase.master.ChangeTableState: Adding region
TestTable,0000518811,1273019008135 to setClosing list
2010-05-04 17:26:27,008 DEBUG org.apache.hadoop.hbase.master.ChangeTableState: Skipping region
REGION => {NAME => 'TestTable,0000518811,1273019008135', STARTKEY => '0000518811',
ENDKEY => '0000650817', 
ENCODED => 143183187, OFFLINE => true, SPLIT => true, TABLE => {{NAME => 'TestTable',
FAMILIES => [{NAME => 'info', VERSIONS => '3', COMPRESSION => 'NONE', TTL =>
'2147483647', BLOCKSIZE => '65536', IN_MEMORY =>
 'false', BLOCKCACHE => 'true'}]}} because it is offline and split
2010-05-04 17:26:27,018 DEBUG org.apache.hadoop.hbase.master.ChangeTableState: Adding region
TestTable,0000518811,1273019008135 to setClosing list
{code}

The region gets stuck in transition! More details in a comment to come.

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