Impala Public Jenkins has submitted this change and it was merged. ( http://gerrit.cloudera.org:8080/17502 )
Change subject: IMPALA-10197 (Part 2): Add KUDU_REPLICA_SELECTION query option ...................................................................... IMPALA-10197 (Part 2): Add KUDU_REPLICA_SELECTION query option The previous patch added a new test case in PlannerTest for Kudu, which check for specific number of hosts and instances for distributed plan with query option KUDU_REPLICA_SELECTION set as LEADER_ONLY. However, the leadership isn't deterministic since each Kudu partition has its own Raft group and the leaders of these groups are not exactly balanced across hosts in a cluster. There's no guarantee that we'll get a certain number of leader hosts for a query which access multiple KUDU partitions. This makes the unit-test flaky. This patch removed the distributed plans to avoid nondeterminism. Testing: - Reran the Planner test and verified the issue did not happen. Change-Id: I3e23667c06c273a261e03de3d81fc7ee1f6b0682 Reviewed-on: http://gerrit.cloudera.org:8080/17502 Reviewed-by: Quanlong Huang <[email protected]> Tested-by: Impala Public Jenkins <[email protected]> --- M testdata/workloads/functional-planner/queries/PlannerTest/kudu-replica-selection-closest-replica.test M testdata/workloads/functional-planner/queries/PlannerTest/kudu-replica-selection-leader-only.test 2 files changed, 11 insertions(+), 182 deletions(-) Approvals: Quanlong Huang: Looks good to me, approved Impala Public Jenkins: Verified -- To view, visit http://gerrit.cloudera.org:8080/17502 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: merged Gerrit-Change-Id: I3e23667c06c273a261e03de3d81fc7ee1f6b0682 Gerrit-Change-Number: 17502 Gerrit-PatchSet: 6 Gerrit-Owner: Wenzhe Zhou <[email protected]> Gerrit-Reviewer: Grant Henke <[email protected]> Gerrit-Reviewer: Impala Public Jenkins <[email protected]> Gerrit-Reviewer: Qifan Chen <[email protected]> Gerrit-Reviewer: Quanlong Huang <[email protected]> Gerrit-Reviewer: Wenzhe Zhou <[email protected]>
