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Posted to dev@hbase.apache.org by "Jimmy Xiang (JIRA)" <ji...@apache.org> on 2014/09/06 02:30:29 UTC
[jira] [Created] (HBASE-11906) Meta data loss with distributed log
replay
Jimmy Xiang created HBASE-11906:
-----------------------------------
Summary: Meta data loss with distributed log replay
Key: HBASE-11906
URL: https://issues.apache.org/jira/browse/HBASE-11906
Project: HBase
Issue Type: Bug
Reporter: Jimmy Xiang
In the attached log, you can see, before log replaying, the region is open on e1205:
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A3. 2014-09-05 16:38:46,705 INFO [B.defaultRpcServer.handler=5,queue=2,port=20020] master.RegionStateStore: Updating row IntegrationTestBigLinkedList,\x90Jy\x04\xA7\x90Jp,1409959495482.cbb0d736ebfabcf4a07e5a7b395fcdf7. with state=OPEN&openSeqNum=40118237&server=e1205.halxg.cloudera.com,20020,1409960280431
{noformat}
Why we picked up a wrong value with an older time stamp?
{noformat}
2014-09-05 16:41:11,063 INFO [B.defaultRpcServer.handler=9,queue=0,port=20020] regionserver.RSRpcServices: Meta replay edit type=PUT,mutation={"totalColumns":4,"families":{"info":[{"timestamp":1409959994634,"tag":["3:\\x00\\x00\\x00\\x00\\x00\\x00\\x09\\x99"],"value":"e1209.halxg.cloudera.com:20020","qualifier":"server","vlen":30},{"timestamp":1409959994634,"tag":["3:\\x00\\x00\\x00\\x00\\x00\\x00\\x09\\x99"],"value":"\\x00\\x00\\x01HH \\xF1\\xA3","qualifier":"serverstartcode","vlen":8},{"timestamp":1409959994634,"tag":["3:\\x00\\x00\\x00\\x00\\x00\\x00\\x09\\x99"],"value":"\\x00\\x00\\x00\\x00\\x00\\x01\\xB7\\xAB","qualifier":"seqnumDuringOpen","vlen":8},{"timestamp":1409959994634,"tag":["3:\\x00\\x00\\x00\\x00\\x00\\x00\\x09\\x99"],"value":"OPEN","qualifier":"state","vlen":4}]},"row":"IntegrationTestBigLinkedList,\\x90Jy\\x04\\xA7\\x90Jp,1409959495482.cbb0d736ebfabcf4a07e5a7b395fcdf7."}
{noformat}
After the log replay, we got from meta the region is open on e1209
{noformat}
A4. 2014-09-05 16:41:12,257 INFO [ActiveMasterManager] master.AssignmentManager: Loading from meta: {cbb0d736ebfabcf4a07e5a7b395fcdf7 state=OPEN, ts=1409960472257, server=e1209.halxg.cloudera.com,20020,1409959391651}
{noformat}
The replayed edits show the log does have the edit expected:
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2014-09-05 16:41:11,862 INFO [B.defaultRpcServer.handler=18,queue=0,port=20020] regionserver.RSRpcServices: Meta replay edit type=PUT,mutation={"totalColumns":4,"families":{"info":[{"timestamp":1409960326705,"tag":["3:\\x00\\x00\\x00\\x00\\x02bad"],"value":"e1205.halxg.cloudera.com:20020","qualifier":"server","vlen":30},{"timestamp":1409960326705,"tag":["3:\\x00\\x00\\x00\\x00\\x02bad"],"value":"\\x00\\x00\\x01HH.\\x81o","qualifier":"serverstartcode","vlen":8},{"timestamp":1409960326705,"tag":["3:\\x00\\x00\\x00\\x00\\x02bad"],"value":"\\x00\\x00\\x00\\x00\\x02d'\\xDD","qualifier":"seqnumDuringOpen","vlen":8},{"timestamp":1409960326706,"tag":["3:\\x00\\x00\\x00\\x00\\x02bad"],"value":"OPEN","qualifier":"state","vlen":4}]},"row":"IntegrationTestBigLinkedList,\\x90Jy\\x04\\xA7\\x90Jp,1409959495482.cbb0d736ebfabcf4a07e5a7b395fcdf7."}
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