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https://issues.apache.org/jira/browse/HBASE-1573?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-1573:
-------------------------
Priority: Blocker (was: Major)
Fix Version/s: (was: 0.19.4)
0.20.0
Made it a blocker for 0.20.0 and for 0.19.4. Lets at least double the number
of listeners for default from 10 to 20. Then, lets add to the 'Getting
Started' that upping this is a good idea in loaded cluster. Putting this issue
against 0.20.0 because then we won't forget it.
> Holes in master state change; updated startcode and server go into .META. but
> catalog scanner just got old values
> -----------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-1573
> URL: https://issues.apache.org/jira/browse/HBASE-1573
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Priority: Blocker
> Fix For: 0.20.0
>
> Attachments: 1573-v2.patch, 1573-v3.patch, 1573.patch
>
>
> Here is example of a scan that takes a while because 6k regions acting on
> stale data resulting in double assignment of region:
> {code}
> hbase-Powerset-master-aa0-000-8.u.powerset.com.log.2009-06-22:2009-06-22
> 10:56:06,220 INFO org.apache.hadoop.hbase.master.ServerManager: Received
> MSG_REPORT_OPEN: enwikibase,Cwj1sehVeEbnrUDR_j0xok==,1245604540748:
> safeMode=false from XX.XX.45.121:20020
> hbase-Powerset-master-aa0-000-8.u.powerset.com.log.2009-06-22:2009-06-22
> 10:56:06,220 INFO org.apache.hadoop.hbase.master.RegionServerOperation:
> enwikibase,Cwj1sehVeEbnrUDR_j0xok==,1245604540748 open on XX.XX.45.121:20020
> hbase-Powerset-master-aa0-000-8.u.powerset.com.log.2009-06-22:2009-06-22
> 10:56:06,220 INFO org.apache.hadoop.hbase.master.RegionServerOperation:
> updating row enwikibase,Cwj1sehVeEbnrUDR_j0xok==,1245604540748 in region
> .META.,,1 with with startcode !?B and server XX.XX.45.121:20020
> hbase-Powerset-master-aa0-000-8.u.powerset.com.log.2009-06-22:2009-06-22
> 10:56:06,397 DEBUG org.apache.hadoop.hbase.master.BaseScanner: Current
> assignment of enwikibase,Cwj0sehVeEbnrUDR_j0xok==,1245604540748 is not valid;
> Server 'XX.XX.44.95:20020' unknown.
> hbase-Powerset-master-aa0-000-8.u.powerset.com.log.2009-06-22:2009-06-22
> 10:56:06,582 INFO org.apache.hadoop.hbase.master.RegionManager: Assigning
> region enwikibase,Cwj1sehVeEbnrUDR_j0xok==,1245604540748 to XX.XX.45.97:20020
> hbase-Powerset-master-aa0-000-8.u.powerset.com.log.2009-06-22:2009-06-22
> 10:56:09,587 INFO org.apache.hadoop.hbase.master.ServerManager: Received
> MSG_REPORT_PROCESS_OPEN: enwikibase,Cwj1sehVeEbnrUDR_j0xok==,1245604540748:
> safeMode=false from XX.XX.45.97:20020
> hbase-Powerset-master-aa0-000-8.u.powerset.com.log.2009-06-22:2009-06-22
> 10:56:12,614 INFO org.apache.hadoop.hbase.master.ServerManager: Received
> MSG_REPORT_OPEN: enwikibase,Cwj1sehVeEbnrUDR_j0xok==,1245604540748:
> safeMode=false from XX.XX.45.97:20020
> hbase-Powerset-master-aa0-000-8.u.powerset.com.log.2009-06-22:2009-06-22
> 10:56:13,549 INFO org.apache.hadoop.hbase.master.RegionServerOperation:
> enwikibase,Cwj1sehVeEbnrUDR_j0xok==,1245604540748 open on XX.XX.45.97:20020
> hbase-Powerset-master-aa0-000-8.u.powerset.com.log.2009-06-22:2009-06-22
> 10:56:13,549 INFO org.apache.hadoop.hbase.master.RegionServerOperation:
> updating row enwikibase,Cwj1sehVeEbnrUDR_j0xok==,1245604540748 in region
> .META.,,1 with with startcode !?? and server XX.XX.45.97:20020
> {code}
> We've just updated the server info in the master because of the region open
> message but the scan sees old info in the .META. table though .META. was just
> updated.
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