CatalogTracker.getMetaServerConnection() checks for root server connection and
makes waitForMeta to go into infinite loop in region assignment flow.
----------------------------------------------------------------------------------------------------------------------------------------------------
Key: HBASE-5299
URL: https://issues.apache.org/jira/browse/HBASE-5299
Project: HBase
Issue Type: Bug
Reporter: ramkrishna.s.vasudevan
Assignee: ramkrishna.s.vasudevan
Priority: Minor
RSA, RS B and RS C are 3 region servers.
RS A -> META
RS B -> ROOT
RS C -> NON META and NON ROOT
Kill RS B and wait for server shutdown handler to start.
Start RS B again before assigning ROOT to RS C.
Now the cluster will try to assign new regions to RS B.
But as ROOT is not yet assigned the OpenRegionHandler.updateMeta will fail to
update the regions just because ROOT is not online.
{code}
a87109263ed53e67158377a149c5a7be from RS_ZK_REGION_OPENING to
RS_ZK_REGION_OPENING
2012-01-30 16:23:25,126 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
regionserver:60020-0x1352e27539c0009 Attempting to transition node
a87109263ed53e67158377a149c5a7be from RS_ZK_REGION_OPENING to
RS_ZK_REGION_OPENING
2012-01-30 16:23:25,159 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
regionserver:60020-0x1352e27539c0009 Successfully transitioned node
a87109263ed53e67158377a149c5a7be from RS_ZK_REGION_OPENING to
RS_ZK_REGION_OPENING
2012-01-30 16:23:35,385 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
regionserver:60020-0x1352e27539c0009 Attempting to transition node
a87109263ed53e67158377a149c5a7be from RS_ZK_REGION_OPENING to
RS_ZK_REGION_OPENING
2012-01-30 16:23:35,449 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
regionserver:60020-0x1352e27539c0009 Successfully transitioned node
a87109263ed53e67158377a149c5a7be from RS_ZK_REGION_OPENING to
RS_ZK_REGION_OPENING
2012-01-30 16:24:16,666 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
regionserver:60020-0x1352e27539c0009 Attempting to transition node
a87109263ed53e67158377a149c5a7be from RS_ZK_REGION_OPENING to
RS_ZK_REGION_OPENING
2012-01-30 16:24:16,701 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
regionserver:60020-0x1352e27539c0009 Successfully transitioned node
a87109263ed53e67158377a149c5a7be from RS_ZK_REGION_OPENING to
RS_ZK_REGION_OPENING
2012-01-30 16:24:20,788 DEBUG
org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler: Interrupting
thread Thread[PostOpenDeployTasks:a87109263ed53e67158377a149c5a7be,5,main]
2012-01-30 16:24:30,699 WARN
org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler: Exception
running postOpenDeployTasks; region=a87109263ed53e67158377a149c5a7be
org.apache.hadoop.hbase.NotAllMetaRegionsOnlineException: Interrupted
at
org.apache.hadoop.hbase.catalog.CatalogTracker.waitForMetaServerConnectionDefault(CatalogTracker.java:439)
at
org.apache.hadoop.hbase.catalog.MetaEditor.updateRegionLocation(MetaEditor.java:142)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.postOpenDeployTasks(HRegionServer.java:1382)
at
org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler$PostOpenDeployTasksThread.run(OpenRegionHandler.java:221)
{code}
So we need to wait for TM to assign the regions again.
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