Aman Sinha has uploaded a new patch set (#2). ( http://gerrit.cloudera.org:8080/16346 )
Change subject: IMPALA-10046: [WIP] Support constant propagation for eligible range predicates ...................................................................... IMPALA-10046: [WIP] Support constant propagation for eligible range predicates This patch adds support for constant propagation of range predicates involving date and timestamp constants. Previously, only equality predicates were considered for propagation. The new type of propagation is shown by the following example: Before constant propagation: WHERE date_col = CAST(timestamp_col as DATE) AND timestamp_col BETWEEN '2019-01-01' AND '2020-01-01' After constant propagation: WHERE date_col >= '2019-01-01' AND date_col <= '2020-01-01' AND timestamp_col >= '2019-01-01' AND timestamp_col <= '2020-01-01' As a consequence, since Impala supports table partitioning by date columns but not timestamp columns, the above propagation enables partition pruning based on timestamp ranges. Existing code for equality based constant propagation was refactored and consolidated into a new class which handles both equality and range based constant propagation. Range based propagation is only applied to date and timestamp columns. Testing: - Added new constant propagation tests to PlannerTest - TODO: run e2e tests Change-Id: I811a1f8d605c27c7704d7fc759a91510c6db3c2b --- A fe/src/main/java/org/apache/impala/analysis/ConstantPredicateHandler.java M fe/src/main/java/org/apache/impala/analysis/Expr.java M testdata/datasets/functional/functional_schema_template.sql M testdata/workloads/functional-planner/queries/PlannerTest/constant-propagation.test 4 files changed, 290 insertions(+), 21 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/46/16346/2 -- To view, visit http://gerrit.cloudera.org:8080/16346 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newpatchset Gerrit-Change-Id: I811a1f8d605c27c7704d7fc759a91510c6db3c2b Gerrit-Change-Number: 16346 Gerrit-PatchSet: 2 Gerrit-Owner: Aman Sinha <[email protected]>
