Daniel Becker has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/13807 )

Change subject: IMPALA-8741: Speed up bit unpacking by vectorisation
......................................................................


Patch Set 10:

(4 comments)

http://gerrit.cloudera.org:8080/#/c/13807/4/be/src/util/bit-packing-vectorized.h
File be/src/util/bit-packing-vectorized.h:

PS4:
> Ahh I see. I don't think it should be too bad, we have similar CMake rules,
I'll discuss it with other team members also.
The generated file now includes a comment with the exact command line that was 
used to generate it.


http://gerrit.cloudera.org:8080/#/c/13807/8/be/src/util/vectorised_bit_unpacking_generator.py
File be/src/util/vectorised_bit_unpacking_generator.py:

http://gerrit.cloudera.org:8080/#/c/13807/8/be/src/util/vectorised_bit_unpacking_generator.py@1540
PS8, Line 1540:
> I'm included to remove this option and pick one alternative as the canonica
I've removed the option and we always use clang-format. Using clang-format, the 
generated file conforms to the coding standard automatically and we don't have 
to take it into account in the code generating script.


http://gerrit.cloudera.org:8080/#/c/13807/8/be/src/util/vectorised_bit_unpacking_generator.py@1544
PS8, Line 1544:         stdout=subprocess.PIPE)
> If we're going with clang-format, I think we should write the non-formatted
I used pipes to avoid overwriting the file and using temporary files.


http://gerrit.cloudera.org:8080/#/c/13807/8/be/src/util/vectorised_bit_unpacking_generator.py@1547
PS8, Line 1547:         output_file.write(clang_format_process_result.stdout)
> I think the script should just fail if clang_format was enabled and couldn'
The script fails if it cannot find clang-format.



--
To view, visit http://gerrit.cloudera.org:8080/13807
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I9e452a547973778bbd8d768c608e1a32e948f947
Gerrit-Change-Number: 13807
Gerrit-PatchSet: 10
Gerrit-Owner: Daniel Becker <daniel.bec...@cloudera.com>
Gerrit-Reviewer: Csaba Ringhofer <csringho...@cloudera.com>
Gerrit-Reviewer: Daniel Becker <daniel.bec...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Comment-Date: Mon, 22 Jul 2019 09:07:33 +0000
Gerrit-HasComments: Yes

Reply via email to