[HBASE-5992] Generalization of region move implementation + manage draining servers in bulk assign

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.95.2
• Fix Version/s: 0.95.0
• Component/s: master, regionserver
• Hadoop Flags: Reviewed
• Assignee: Nicolas Liochon
• Reporter: Nicolas Liochon
• Created: 11/May/12 19:49
• Updated: 23/Sep/13 18:30
• Resolved: 13/May/12 00:38

Description

The region move implementation now has now a similar behavior whatever the destination server is specified or not. This allows:

• to benefit from the improvement in HBASE-5877
• as a side effect to have the coprocessors calls when the destination server is not specified

This includes various fixes around draining servers. Draining servers were not excluded during a bulk assign. This is now fixed.

Issue Links

• is required by: HBASE-5843 Improve HBase MTTR - Mean Time To Recover
• relates to: HBASE-5877 When a query fails because the region has moved, let the regionserver return the new address to the client