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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-3278) AssertionError in LoadBalancer
Date Wed, 24 Nov 2010 23:55:13 GMT
AssertionError in LoadBalancer
------------------------------

                 Key: HBASE-3278
                 URL: https://issues.apache.org/jira/browse/HBASE-3278
             Project: HBase
          Issue Type: Bug
            Reporter: Jean-Daniel Cryans
             Fix For: 0.90.0


While running PE with low splitting configuration, I got this:

{noformat}

2010-11-24 23:23:24,508 INFO org.apache.hadoop.hbase.master.ServerManager: Received REGION_SPLIT:
TestTable,0002485653,...
2010-11-24 23:23:26,129 INFO org.apache.hadoop.hbase.master.ServerManager: Received REGION_SPLIT:
TestTable,0004309306,...
2010-11-24 23:23:26,132 INFO org.apache.hadoop.hbase.master.ServerManager: Received REGION_SPLIT:
TestTable,0001281491...
2010-11-24 23:23:26,162 FATAL org.apache.hadoop.hbase.master.HMaster$1: sv2borg180:61000-BalancerChoreerror
java.lang.AssertionError
	at org.apache.hadoop.hbase.master.LoadBalancer.balanceCluster(LoadBalancer.java:296)
	at org.apache.hadoop.hbase.master.HMaster.balance(HMaster.java:679)
	at org.apache.hadoop.hbase.master.HMaster$1.chore(HMaster.java:578)
	at org.apache.hadoop.hbase.Chore.run(Chore.java:66)
2010-11-24 23:23:26,163 INFO org.apache.hadoop.hbase.master.HMaster$1: sv2borg180:61000-BalancerChore
exiting
2010-11-24 23:23:26,236 INFO org.apache.hadoop.hbase.master.ServerManager: Received REGION_SPLIT:
TestTable,0000921369,...
{noformat}

The thread dies but the master survives. There's nothing specific before that in the log,
just regions splitting.

The line in LoadBalancer is:

{code}
    assert(regionidx == regionsToMove.size());
{code}

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