Nandor Kollar has uploaded this change for review. ( http://gerrit.cloudera.org:8080/24818
Change subject: IMPALA-15033: Optimize simple LIMIT queries on Iceberg V2 tables ...................................................................... IMPALA-15033: Optimize simple LIMIT queries on Iceberg V2 tables When OPTIMIZE_SIMPLE_LIMIT is enabled and an Iceberg V2 table has enough delete-free data files to satisfy the LIMIT, bypass the expensive delete-join pipeline and scan only the minimum subset of those files. The optimization fires early in IcebergScanPlanner.createScanPlan() and produces a simple IcebergScanNode with just the selected files. It is skipped for OPTIMIZE TABLE statements, queries with WHERE clauses, and when there aren't enough delete-free rows to cover the limit. Also cleans up Boolean.valueOf(true/false) to Boolean.TRUE/FALSE in SelectStmt.checkSimpleLimitStmt(). Testing: added iceberg-optimize-simple-limit.test covering mixed delete/no-delete files, optimization disabled, no-delete tables, all-deletes tables, and WHERE clause disqualification. Change-Id: I416d947e3c6e3fb0e4c2da056d75f70c08ac9676 Assisted-by: Claude Opus 4.6 (Claude Code) --- M fe/src/main/java/org/apache/impala/analysis/SelectStmt.java M fe/src/main/java/org/apache/impala/planner/IcebergScanPlanner.java M fe/src/test/java/org/apache/impala/planner/PlannerTest.java A testdata/workloads/functional-planner/queries/PlannerTest/iceberg-optimize-simple-limit.test 4 files changed, 172 insertions(+), 3 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/18/24818/1 -- To view, visit http://gerrit.cloudera.org:8080/24818 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: I416d947e3c6e3fb0e4c2da056d75f70c08ac9676 Gerrit-Change-Number: 24818 Gerrit-PatchSet: 1 Gerrit-Owner: Nandor Kollar <[email protected]>
