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Jimmy Xiang commented on HBASE-8912: ------------------------------------ [~ram_krish], my only concern using the same thread is that AM has only one ZK event thread in 0.94 (in trunk we have a pool of threads). > [0.94] AssignmentManager throws IllegalStateException from PENDING_OPEN to > OFFLINE > ---------------------------------------------------------------------------------- > > Key: HBASE-8912 > URL: https://issues.apache.org/jira/browse/HBASE-8912 > Project: HBase > Issue Type: Bug > Reporter: Enis Soztutar > Assignee: Lars Hofhansl > Priority: Critical > Fix For: 0.94.16 > > Attachments: 8912-0.94-alt2.txt, 8912-0.94.txt, 8912-fix-race.txt, > HBASE-8912.patch, HBase-0.94 #1036 test - testRetrying [Jenkins].html, > log.txt, org.apache.hadoop.hbase.catalog.TestMetaReaderEditor-output.txt > > > AM throws this exception which subsequently causes the master to abort: > {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} > This exception trace is from the failing test TestMetaReaderEditor which is > failing pretty frequently, but looking at the test code, I think this is not > a test-only issue, but affects the main code path. > https://builds.apache.org/job/HBase-0.94/1036/testReport/junit/org.apache.hadoop.hbase.catalog/TestMetaReaderEditor/testRetrying/ -- This message was sent by Atlassian JIRA (v6.1.5#6160)