Peter Rozsa has posted comments on this change. ( http://gerrit.cloudera.org:8080/24818 )
Change subject: IMPALA-15033: Optimize simple LIMIT queries on Iceberg V2 tables ...................................................................... Patch Set 1: (1 comment) http://gerrit.cloudera.org:8080/#/c/24818/1/fe/src/main/java/org/apache/impala/planner/IcebergScanPlanner.java File fe/src/main/java/org/apache/impala/planner/IcebergScanPlanner.java: http://gerrit.cloudera.org:8080/#/c/24818/1/fe/src/main/java/org/apache/impala/planner/IcebergScanPlanner.java@373 PS1, Line 373: for (IcebergFileDescriptor fd : dataFilesWithoutDeletes_) { What about ordering the files by cardinality? consider an example where the files are coming with cardinality as 1,1,1,1,1,1,1,1, 100, and the limit is 80; this would only help by dropping the delete file + data file amending. -- 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: comment Gerrit-Change-Id: I416d947e3c6e3fb0e4c2da056d75f70c08ac9676 Gerrit-Change-Number: 24818 Gerrit-PatchSet: 1 Gerrit-Owner: Nandor Kollar <[email protected]> Gerrit-Reviewer: Impala Public Jenkins <[email protected]> Gerrit-Reviewer: Nandor Kollar <[email protected]> Gerrit-Reviewer: Noemi Pap-Takacs <[email protected]> Gerrit-Reviewer: Peter Rozsa <[email protected]> Gerrit-Reviewer: Zoltan Borok-Nagy <[email protected]> Gerrit-Comment-Date: Tue, 15 Sep 2026 13:20:30 +0000 Gerrit-HasComments: Yes
