Matthew Jacobs has posted comments on this change.

Change subject: IMPALA-3823: Add timer to measure Parquet footer reads
......................................................................


Patch Set 4:

(4 comments)

http://gerrit.cloudera.org:8080/#/c/4371/4/be/src/util/runtime-profile-counters.h
File be/src/util/runtime-profile-counters.h:

PS4, Line 147: .
> When you say 'child counters', do you mean it in the terms of the child cou
Yeah, ignore this. I was trying to further differentiate this from the new 
counter.

In the future we can think about cleaning up all the different kinds of 
Counters we have.


http://gerrit.cloudera.org:8080/#/c/4371/5/be/src/util/runtime-profile.cc
File be/src/util/runtime-profile.cc:

PS5, Line 1020: }
              : 
              : voi
1 line


PS5, Line 1023:   lock_guard<SpinLock> l(counter_lock_);
              :   unit_ = counter.unit;
              :   c
1 line


http://gerrit.cloudera.org:8080/#/c/4371/5/tests/query_test/test_scanners.py
File tests/query_test/test_scanners.py:

Line 338:     # scan and process the Parquet footer across scan ranges and also 
records the min and
can you add a TODO for handling the case when there is more than one range per 
node? You can add it requires parsing the times and there is unit test coverage.


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Gerrit-MessageType: comment
Gerrit-Change-Id: Icf87bad90037dd0cea63b10c537382ec0f980cbf
Gerrit-PatchSet: 4
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Sailesh Mukil <sail...@cloudera.com>
Gerrit-Reviewer: Dan Hecht <dhe...@cloudera.com>
Gerrit-Reviewer: Matthew Jacobs <m...@cloudera.com>
Gerrit-Reviewer: Sailesh Mukil <sail...@cloudera.com>
Gerrit-HasComments: Yes

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