Wenzhe Zhou has uploaded this change for review. ( http://gerrit.cloudera.org:8080/15250
Change subject: IMPALA-6689: Speed up point lookup for Kudu primary key ...................................................................... IMPALA-6689: Speed up point lookup for Kudu primary key If all primary key columns of the Kudu table are in equivalence predicates pushed down to Kudu, Kudu will return at most one row. In this case, we can adjust the cardinality estimation to speed up point lookup. This patch set the input and output cardinality as 1 if the the number of primary key columns in equivalence predicates pushed down to Kudu equals the total number of primary key columns of the Kudu table, hence enable small query optimization. Testing: - Added test cases in following PlannerTest: small-query-opt.test and disable-codegen.test. - Passed FE PlannerTest with new test cases. Change-Id: I4631cd4d1a528a1152b5cdcb268426f2ba1a0c08 --- M fe/src/main/java/org/apache/impala/planner/KuduScanNode.java M testdata/workloads/functional-planner/queries/PlannerTest/disable-codegen.test M testdata/workloads/functional-planner/queries/PlannerTest/small-query-opt.test 3 files changed, 85 insertions(+), 3 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/50/15250/2 -- To view, visit http://gerrit.cloudera.org:8080/15250 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: I4631cd4d1a528a1152b5cdcb268426f2ba1a0c08 Gerrit-Change-Number: 15250 Gerrit-PatchSet: 2 Gerrit-Owner: Wenzhe Zhou <wz...@cloudera.com> Gerrit-Reviewer: Quanlong Huang <huangquanl...@gmail.com> Gerrit-Reviewer: Thomas Tauber-Marshall <tmarsh...@cloudera.com>
