stack created HBASE-11160:
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Summary: Undo append waiting on region edit/sequence id update
Key: HBASE-11160
URL: https://issues.apache.org/jira/browse/HBASE-11160
Project: HBase
Issue Type: Sub-task
Components: wal
Affects Versions: 0.99.0
Reporter: stack
Assignee: stack
Fix For: 0.99.0
HBASE--11135 changed append to wait on the update of the edit/sequence id.
This slows writes by a significant amount (50% slower?). [~jeffreyz] is going
to look at updating MVCC inside in the ring buffer consumer thread just after
the region edit/sequence id update. If that works, then we can undo having
append wait on the sequence id update and get some of our speedup back.
Marking this 0.99 and blocker so we don't forget about it (Undoing the wait is
just a case of removing the few lines of latch code in FSWALEdit).
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