[HBASE-2927] BaseScanner gets stale HRegionInfo in some race cases

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.20.6, 0.89.20100621
• Fix Version/s: 0.90.0
• Hadoop Flags: Reviewed
• Assignee: Jean-Daniel Cryans
• Reporter: Jean-Daniel Cryans
• Created: 18/Aug/10 19:31
• Updated: 20/Nov/15 12:43
• Resolved: 18/Aug/10 19:42

Description

This issue is a branch of HBASE-2812, as it is a specific fix for disabling tables in some situations. The issue is that the BaseScanner can get a stale HRI by the time it checks if the region is OFFLINE, and even in trunk where we do a double checkAssigned there is no way for us to tell if the region was offlined in the mean time.