[HBASE-6160] META entries from daughters can be deleted before parent entries

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.92.2, 0.94.0, 0.95.2
• Fix Version/s: 0.92.2, 0.94.1
• Component/s: Client, regionserver
• Hadoop Flags: Reviewed
• Assignee: Enis Soztutar
• Reporter: Enis Soztutar
• Created: 04/Jun/12 20:21
• Updated: 12/Oct/12 05:36
• Resolved: 05/Jun/12 18:10

Description

HBASE-5986 fixed and issue, where the client sees the META entry for the parent, but not the children. However, after the fix, we have seen the following issue in tests:

Region A is split to -> B, C
Region B is split to -> D, E

After some time, META entry for B is deleted since it is not needed anymore, but META entry for Region A stays in META (C still refers it). In this case, the client throws RegionOfflineException for B.