Tim Armstrong has uploaded a new patch set (#2). ( http://gerrit.cloudera.org:8080/15545 )
Change subject: IMPALA-9099: allow mt_dop for joins by default ...................................................................... IMPALA-9099: allow mt_dop for joins by default This allows running *any* read-only query with mt_dop > 0. Before this patch, no joins were allowed with mt_dop > 0. Previous patches, particularly IMPALA-9156, added significantly more code coverage for multithreading+joins. It should be safe to allow enabling on a query-by-query basis. Many improvements are still planned - see IMPALA-3902. So behaviour and performance characteristics of mt_dop > 0 with more complex plans and joins will continue to change. Testing: Updated the mt_dop validation tests and remove redundant planner test that doesn't provide much additional coverage of the validation support. Ran exhaustive tests. Change-Id: I9c6566abb239db0e775f2beaa25a62c36313cd6f --- M bin/run-all-tests.sh M fe/src/main/java/org/apache/impala/planner/Planner.java M fe/src/main/java/org/apache/impala/planner/SingleNodePlanner.java M fe/src/test/java/org/apache/impala/planner/PlannerTest.java D testdata/workloads/functional-planner/queries/PlannerTest/mt-dop-validation-hdfs-num-rows-est-enabled.test M testdata/workloads/functional-planner/queries/PlannerTest/mt-dop-validation.test M testdata/workloads/functional-query/queries/QueryTest/mt-dop-auto-fallback.test M tests/custom_cluster/test_mt_dop.py 8 files changed, 179 insertions(+), 369 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/45/15545/2 -- To view, visit http://gerrit.cloudera.org:8080/15545 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newpatchset Gerrit-Change-Id: I9c6566abb239db0e775f2beaa25a62c36313cd6f Gerrit-Change-Number: 15545 Gerrit-PatchSet: 2 Gerrit-Owner: Tim Armstrong <[email protected]>
