Nicolas Liochon created HBASE-11209:
---------------------------------------
Summary: Increase the default value for
hbase.hregion.memstore.block.multipler from 2 to 4
Key: HBASE-11209
URL: https://issues.apache.org/jira/browse/HBASE-11209
Project: HBase
Issue Type: Brainstorming
Components: regionserver
Affects Versions: 0.98.2, 0.99.0
Reporter: Nicolas Liochon
Assignee: Nicolas Liochon
Fix For: 0.99.0, 0.98.3
On a YCSB test, I saw a 33% performance increase, both on the max latency and
on the throughput. I'm convinced enough that this value is better that I think
it makes sense to change it on 0.98 as well.
More fundamentally, but outside of the scope of this patch, I think this
parameter should be changed to something at the region server level: today, we
have:
- global memstore check: if we're other 40%, we flush the biggest memstore
- local: no more than 2 (proposed: 4) memstore size per region.
But if we have enough memory and a spike on a region, there is no reason for
not taking the write.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
