Optimize truncate when snapshots are disabled or keyspace not durable ---------------------------------------------------------------------
Key: CASSANDRA-4153 URL: https://issues.apache.org/jira/browse/CASSANDRA-4153 Project: Cassandra Issue Type: Improvement Reporter: Christian Spriegel Priority: Minor My goal is to make truncate to be less IO intensive so that my junit tests run faster (as already explained in CASSANDRA-3710). I think I have now a solution which does not change too much: I created a patch that optimizes three things within truncate: - Skip the whole Commitlog.forceNewSegment/discardCompletedSegments, if durable_writes are disabled for the keyspace. - With CASSANDRA-3710 implemented, truncate does not need to flush memtables to disk when snapshots are disabled. - Reduce the sleep interval The patch works nicely for me. Applying it and disabling durable_writes/autoSnapshot increased the speed of my testsuite vastly. I hope I did not overlook something. Let me know if my patch needs cleanup. I'd be glad to change it, if it means the patch will get accepted. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira