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https://issues.apache.org/jira/browse/HBASE-19813?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gavin updated HBASE-19813:
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Comment: was deleted
(was: A comment with security level 'jira-users' was removed.)
> clone_snapshot fails with region failing to open when RS group feature is
> enabled
> ---------------------------------------------------------------------------------
>
> Key: HBASE-19813
> URL: https://issues.apache.org/jira/browse/HBASE-19813
> Project: HBase
> Issue Type: Bug
> Reporter: Ted Yu
> Priority: Major
>
> The following scenario came from support case.
> In cluster 1, create RS group rsg. Move table to rsg group.
> Take snapshot of the table and copy the snapshot to cluster 2 where there is
> no group called rsg.
> Cloning snapshot to table new_t4 on cluster 2 fails :
> {code}
> 2018-01-09 11:45:30,468 INFO [RestoreSnapshot-pool68-t1]
> regionserver.HRegion: Closed
> new_t4,,1514454789243.a6173d2955182ac5bde208301681c6af.
> 2018-01-09 11:45:30,468 INFO [MASTER_TABLE_OPERATIONS-shubh1-1:16000-0]
> snapshot.CloneSnapshotHandler: Clone snapshot=snap_t3 on table=new_t4
> completed!
> 2018-01-09 11:45:30,492 INFO [MASTER_TABLE_OPERATIONS-shubh1-1:16000-0]
> hbase.MetaTableAccessor: Added 1
> 2018-01-09 11:45:30,492 WARN [MASTER_TABLE_OPERATIONS-shubh1-1:16000-0]
> rsgroup.RSGroupBasedLoadBalancer: Group for table new_t4 is null
> 2018-01-09 11:45:30,492 DEBUG [MASTER_TABLE_OPERATIONS-shubh1-1:16000-0]
> rsgroup.RSGroupBasedLoadBalancer: Group Information found to be null. Some
> regions might be unassigned.
> 2018-01-09 11:45:30,492 WARN [MASTER_TABLE_OPERATIONS-shubh1-1:16000-0]
> master.RegionStates: Failed to open/close a6173d2955182ac5bde208301681c6af on
> null, set to FAILED_OPEN
> {code}
> Here is related code from RSGroupBasedLoadBalancer:
> {code}
> List<ServerName> candidateList = filterOfflineServers(info, servers);
> for (RegionInfo region : regionList) {
> currentAssignmentMap.put(region, regions.get(region));
> }
> if(candidateList.size() > 0) {
> assignments.putAll(this.internalBalancer.retainAssignment(
> currentAssignmentMap, candidateList));
> {code}
> candidateList is empty for table new_t4, leaving region for the table in
> FAILED_OPEN state.
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