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)