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 21:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/13807/19/be/src/util/vectorised_bit_unpacking_generator.py
File be/src/util/vectorised_bit_unpacking_generator.py:

http://gerrit.cloudera.org:8080/#/c/13807/19/be/src/util/vectorised_bit_unpacking_generator.py@76
PS19, Line 76:
> Removed metaclass inheritance, so I'm going to remove this.
Accidentally I found a way to use abstract base classes without the metaclass 
syntax, I should have just looked at the abc module documentation. I simply 
derive the class from ABC instead of using ABCMeta as a metaclass. This way 
flake8 has no problem with it.


http://gerrit.cloudera.org:8080/#/c/13807/19/be/src/util/vectorised_bit_unpacking_generator.py@89
PS19, Line 89:
> Yeah we can ignore this, it will only get re-flagged if someone touches the
I added a comment describing why we have those imports.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I9e452a547973778bbd8d768c608e1a32e948f947
Gerrit-Change-Number: 13807
Gerrit-PatchSet: 21
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, 29 Jul 2019 08:03:22 +0000
Gerrit-HasComments: Yes

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