[ https://issues.apache.org/jira/browse/CASSANDRA-5259?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Ellis resolved CASSANDRA-5259. --------------------------------------- Resolution: Not A Problem Not actually a problem -- gNBT is synchronized to prevent this. Not an elegant solution but adequate. Added a comment. > getNextBackgroundTask gives up too easily > ----------------------------------------- > > Key: CASSANDRA-5259 > URL: https://issues.apache.org/jira/browse/CASSANDRA-5259 > Project: Cassandra > Issue Type: Bug > Components: Core > Affects Versions: 1.2.0 > Reporter: Jonathan Ellis > Assignee: Jonathan Ellis > Priority: Minor > Fix For: 1.2.2 > > > getNextBackgroundTask only attempts once to markSSTablesForCompaction. So if > many task invocations are scanning compaction candidates concurrently (e.g. > because submitBackground fires off a bunch of gNBT at once), it's highly > likely that all will compute the same victim list and only one will return a > CompactionTask, resulting in less compaction concurrency than desired. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira