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From "Marcel Kornacker (Code Review)" <ger...@cloudera.org>
Subject [Impala-ASF-CR] IMPALA-5036: Parquet count star optimization
Date Tue, 09 May 2017 01:02:19 GMT
Marcel Kornacker has posted comments on this change.

Change subject: IMPALA-5036: Parquet count star optimization
......................................................................


Patch Set 1:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/6812/1/testdata/workloads/functional-planner/queries/PlannerTest/parquet-stats-agg.test
File testdata/workloads/functional-planner/queries/PlannerTest/parquet-stats-agg.test:

Line 34: |  output: sum_zero_if_empty(functional_parquet.alltypes.parquet-stats: num_rows)
i don't know what this means.

could we reference 'count(*)' directly? that's going to be more intuitive than <some function
over>(num_rows)


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Gerrit-MessageType: comment
Gerrit-Change-Id: I536b85c014821296aed68a0c68faadae96005e62
Gerrit-PatchSet: 1
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Taras Bobrovytsky <tbobrovytsky@cloudera.com>
Gerrit-Reviewer: Alex Behm <alex.behm@cloudera.com>
Gerrit-Reviewer: Lars Volker <lv@cloudera.com>
Gerrit-Reviewer: Marcel Kornacker <marcel@cloudera.com>
Gerrit-HasComments: Yes

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