[ https://issues.apache.org/jira/browse/IMPALA-8964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tim Armstrong reassigned IMPALA-8964: ------------------------------------- Assignee: David Rorke > Increase runtime filter wait timeout for mt_dop > ----------------------------------------------- > > Key: IMPALA-8964 > URL: https://issues.apache.org/jira/browse/IMPALA-8964 > Project: IMPALA > Issue Type: Improvement > Components: Distributed Exec > Reporter: Tim Armstrong > Assignee: David Rorke > Priority: Major > Labels: multithreading > > When we enable joins for multithreaded plans, we should adjust the runtime > filter wait time. > A large part of the motivation for the timeout was to allow parallelism > between the different sides of the join - there was some concern that having > a scan block indefinitely would effectively reduce the amount of parallelism > that the plan executed with. > With multithreading, we want to get parallelism across multiple copies of the > same fragment, rather than parallelism across different fragments. So this > motivation no longer applies. Making the filter wait time unlimited would > make query execution more predictable. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-all-unsubscr...@impala.apache.org For additional commands, e-mail: issues-all-h...@impala.apache.org