Aleksandr Efimov has posted comments on this change. ( http://gerrit.cloudera.org:8080/24597 )
Change subject: IMPALA-7996: Optimize constant-false outer joins ...................................................................... Patch Set 8: PS8 adds three comments and rebases onto the current IMPALA-15280 (24723 PS2, which grew a subset check on the descriptor-table narrowing). The comments say why the synthetic equi conjunct exists at all - without it the planner picks a nested loop join and the constant buys nothing - what the flag on HashJoinNode stands for, and where the LEFT_OUTER precondition in DistributedPlanner gets its guarantee. -- To view, visit http://gerrit.cloudera.org:8080/24597 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: I6505825fc958720eec12e13d546661834f221b80 Gerrit-Change-Number: 24597 Gerrit-PatchSet: 8 Gerrit-Owner: Aleksandr Efimov <[email protected]> Gerrit-Reviewer: Aleksandr Efimov <[email protected]> Gerrit-Reviewer: Aman Sinha <[email protected]> Gerrit-Reviewer: Csaba Ringhofer <[email protected]> Gerrit-Reviewer: Impala Public Jenkins <[email protected]> Gerrit-Reviewer: Michael Smith <[email protected]> Gerrit-Reviewer: Paul Rogers <[email protected]> Gerrit-Reviewer: Steve Carlin <[email protected]> Gerrit-Reviewer: Yifan Zhang <[email protected]> Gerrit-Comment-Date: Mon, 31 Aug 2026 15:05:12 +0000 Gerrit-HasComments: No
