Lars Hofhansl created HBASE-10257:
-------------------------------------
Summary: [0.94] Master aborts due to assignment race
Key: HBASE-10257
URL: https://issues.apache.org/jira/browse/HBASE-10257
Project: HBase
Issue Type: Sub-task
Reporter: Lars Hofhansl
Assignee: Lars Hofhansl
Fix For: 0.94.16
# When a region server attempts to open a region and fails it takes the resp.
znode to PENDING_OPEN followed by FAILED_OPEN in quick succession.
# The HMaster now gets two notifications from ZK.
# If the znode transitioned to FAILED_OPEN before the HMaster could react to
PENDING_OPEN. There will be two ClosedRegionHandler running.
That races causes this condition:
{code}
java.lang.IllegalStateException: Unexpected state :
testRetrying,jjj,1372891751115.9b828792311001062a5ff4b1038fe33b.
state=PENDING_OPEN, ts=1372891751912,
server=hemera.apache.org,39064,1372891746132 .. Cannot transit it to OFFLINE.
at
org.apache.hadoop.hbase.master.AssignmentManager.setOfflineInZooKeeper(AssignmentManager.java:1879)
at
org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1688)
at
org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1424)
at
org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1399)
at
org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1394)
at
org.apache.hadoop.hbase.master.handler.ClosedRegionHandler.process(ClosedRegionHandler.java:105)
at
org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:175)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)
{code}
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