Tim Armstrong has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/14015 )

Change subject: IMPALA-8691: Query option to disable data cache
......................................................................


Patch Set 1:

(2 comments)

http://gerrit.cloudera.org:8080/#/c/14015/1/be/src/runtime/io/request-ranges.h
File be/src/runtime/io/request-ranges.h:

http://gerrit.cloudera.org:8080/#/c/14015/1/be/src/runtime/io/request-ranges.h@180
PS1, Line 180:   BufferOpts(bool try_hdfs_cache, bool try_data_cache)
Can we use enums or a bitmask or something? Two booleans related to caching is 
hard to understand and a potential bug factory.

I know it's an annoying change but it's gonna make it a lot more understandable.


http://gerrit.cloudera.org:8080/#/c/14015/1/tests/custom_cluster/test_data_cache.py
File tests/custom_cluster/test_data_cache.py:

http://gerrit.cloudera.org:8080/#/c/14015/1/tests/custom_cluster/test_data_cache.py@79
PS1, Line 79:   def test_data_cache_disablement(self, vector):
Can we move one or both of the other tests to exhaustive to make up for the 
added runtime? I expect these should be pretty stable.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I39122ac38435cedf94b2b39145863764d0b5b6c8
Gerrit-Change-Number: 14015
Gerrit-PatchSet: 1
Gerrit-Owner: Michael Ho <k...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Gerrit-Reviewer: Joe McDonnell <joemcdonn...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Comment-Date: Thu, 08 Aug 2019 15:30:57 +0000
Gerrit-HasComments: Yes

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