[ https://issues.apache.org/jira/browse/CASSANDRA-2034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Patricio Echague updated CASSANDRA-2034: ---------------------------------------- Attachment: (was: CASSANDRA-2034-trunk-v2.patch) > Make Read Repair unnecessary when Hinted Handoff is enabled > ----------------------------------------------------------- > > Key: CASSANDRA-2034 > URL: https://issues.apache.org/jira/browse/CASSANDRA-2034 > Project: Cassandra > Issue Type: Improvement > Components: Core > Reporter: Jonathan Ellis > Assignee: Patricio Echague > Fix For: 1.0 > > Attachments: CASSANDRA-2034-trunk.patch > > Original Estimate: 8h > Remaining Estimate: 8h > > Currently, HH is purely an optimization -- if a machine goes down, enabling > HH means RR/AES will have less work to do, but you can't disable RR entirely > in most situations since HH doesn't kick in until the FailureDetector does. > Let's add a scheduled task to the mutate path, such that we return to the > client normally after ConsistencyLevel is achieved, but after RpcTimeout we > check the responseHandler write acks and write local hints for any missing > targets. > This would making disabling RR when HH is enabled a much more reasonable > option, which has a huge impact on read throughput. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira