[ https://issues.apache.org/jira/browse/HBASE-15451?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yu Li updated HBASE-15451: -------------------------- Resolution: Fixed Fix Version/s: 1.3.0 2.0.0 Status: Resolved (was: Patch Available) Pushed to master and branch-1. > Remove unnecessary wait in MVCC > ------------------------------- > > Key: HBASE-15451 > URL: https://issues.apache.org/jira/browse/HBASE-15451 > Project: HBase > Issue Type: Improvement > Affects Versions: 2.0.0, 1.2.0 > Reporter: Yu Li > Assignee: Yu Li > Fix For: 2.0.0, 1.3.0 > > Attachments: HBASE-15451.patch, HBASE-15451.test > > > Currently the return value of MVCC#complete indicates whether readPoint > already advanced over write number of the given WriteEntry: > {code} > return readPoint.get() >= writeEntry.getWriteNumber(); > {code} > While in MVCC#checkAndWait we never take usage of this but always call > waitForRead which will acquire and release lock on {{readWaiters}} and cause > additional context switch. This JIRA will improve this logic and remove the > unnecessary wait. -- This message was sent by Atlassian JIRA (v6.3.4#6332)