[HBASE-8081] Backport HBASE-7213 (separate hlog for meta tables) to 0.94

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.94.5
• Fix Version/s: 0.94.7

Release Note

The regionserver carrying .META. / -ROOT- region will now write two WALs; the usual one w/ all edits and then a special one with a .meta. suffix into which all edits for .META. / -ROOT- region go. These files will be recovered first on server crash. This feature is turned OFF by default. The configuration hbase.regionserver.separate.hlog.for.meta must be set to true to enable this behavior.

• Assignee: Devaraj Das
• Reporter: Devaraj Das
• Created: 12/Mar/13 18:28
• Updated: 27/Apr/13 15:55
• Resolved: 26/Mar/13 21:01

Description

I am interested in backporting HBASE-7213 to 0.94. Helps to address more of the MTTR story. Offline discussion with Lars indicated he is interested as well.