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Tim Armstrong commented on IMPALA-6035: --------------------------------------- commit d8ed07f11227257254682fff3b62de8834291d66 Author: Tim Armstrong <tarmstr...@cloudera.com> Date: Thu May 31 16:25:26 2018 -0700 IMPALA-6035: Add query options to limit thread reservation Adds two options: THREAD_RESERVATION_LIMIT and THREAD_RESERVATION_AGGREGATE_LIMIT, which are both enforced by admission control based on planner resource requirements and the schedule. The mechanism used is the same as the minimum reservation checks. THREAD_RESERVATION_LIMIT limits the total number of reserved threads in fragments scheduled on a single backend. THREAD_RESERVATION_AGGREGATE_LIMIT limits the sum of reserved threads across all fragments. This also slightly improves the minimum reservation error message to include the host name. Testing: Added end-to-end tests that exercise the code paths. Ran core tests. Change-Id: I5b5bbbdad5cd6b24442eb6c99a4d38c2ad710007 Reviewed-on: http://gerrit.cloudera.org:8080/10365 Reviewed-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com> > Add query option that rejects queries based on query complexity > --------------------------------------------------------------- > > Key: IMPALA-6035 > URL: https://issues.apache.org/jira/browse/IMPALA-6035 > Project: IMPALA > Issue Type: Sub-task > Components: Distributed Exec > Reporter: Mostafa Mokhtar > Assignee: Tim Armstrong > Priority: Major > Labels: admission-control > Fix For: Impala 2.13.0, Impala 3.1.0 > > > Expose query option to reject queries with a large number of remote > fragments. > Queries with a large number of fragments can negatively affect cluster > behavior. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-all-unsubscr...@impala.apache.org For additional commands, e-mail: issues-all-h...@impala.apache.org