Tim Armstrong has posted comments on this change. ( http://gerrit.cloudera.org:8080/16720 )
Change subject: IMPALA-10325 Parquet scan should use min/max statistics to skip pages based on equi-join predicate ...................................................................... Patch Set 12: (1 comment) http://gerrit.cloudera.org:8080/#/c/16720/12//COMMIT_MSG Commit Message: http://gerrit.cloudera.org:8080/#/c/16720/12//COMMIT_MSG@9 PS12, Line 9: This patch adds the logic to utilize min/max stats > Does this patch also leads to utilizing min/max filters per-row, similarly I think this would be a good thing to do (I think the patch does this automatically). One question I have is, if this is the case, whether the min/max filter is evaluated before the bloom filter or vice-versa. That might have some perf implications. It's not clear to me which order is better or whether it really matters. -- To view, visit http://gerrit.cloudera.org:8080/16720 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: I379405ee75b14929df7d6b5d20dabc6f51375691 Gerrit-Change-Number: 16720 Gerrit-PatchSet: 12 Gerrit-Owner: Qifan Chen <[email protected]> Gerrit-Reviewer: Csaba Ringhofer <[email protected]> Gerrit-Reviewer: Impala Public Jenkins <[email protected]> Gerrit-Reviewer: Tim Armstrong <[email protected]> Gerrit-Reviewer: Zoltan Borok-Nagy <[email protected]> Gerrit-Comment-Date: Fri, 20 Nov 2020 23:17:10 +0000 Gerrit-HasComments: Yes
