ZhangYao has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/14945 )

Change subject: KUDU-3032 Prevent selecting unnecessarily columns after scan 
optimization
......................................................................


Patch Set 2:

(4 comments)

> (4 comments)
 >
 > Could you add an end-to-end test that exercises the scan path in
 > tablet_service.cc too?

Added :)

http://gerrit.cloudera.org:8080/#/c/14945/2/src/kudu/common/scan_spec.h
File src/kudu/common/scan_spec.h:

http://gerrit.cloudera.org:8080/#/c/14945/2/src/kudu/common/scan_spec.h@73
PS2, Line 73:   // Build missing column from subtraction between predicates and 
projection.
> Nit: how about "Get columns that are present in the predicates but not in t
Done


http://gerrit.cloudera.org:8080/#/c/14945/2/src/kudu/common/scan_spec.h@74
PS2, Line 74:   std::vector<ColumnSchema> BuildMissingColumn(const Schema& 
projection);
> Nit: rename to GetMissingColumns
Done


http://gerrit.cloudera.org:8080/#/c/14945/2/src/kudu/common/scan_spec.cc
File src/kudu/common/scan_spec.cc:

http://gerrit.cloudera.org:8080/#/c/14945/2/src/kudu/common/scan_spec.cc@165
PS2, Line 165:   std::unordered_set<string> missing_col_names;
> Add a using for this.
Done


http://gerrit.cloudera.org:8080/#/c/14945/2/src/kudu/common/scan_spec.cc@168
PS2, Line 168: predicate.column().name()
> This is repeated three times; could you store it in a local cref?
Done



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I82c30c5272b6fc114b710df9d6c31d5d1e319e31
Gerrit-Change-Number: 14945
Gerrit-PatchSet: 2
Gerrit-Owner: ZhangYao <[email protected]>
Gerrit-Reviewer: Adar Dembo <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Tidy Bot (241)
Gerrit-Reviewer: Todd Lipcon <[email protected]>
Gerrit-Reviewer: ZhangYao <[email protected]>
Gerrit-Comment-Date: Sat, 04 Jan 2020 04:59:49 +0000
Gerrit-HasComments: Yes

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