Tim Armstrong has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/8966 )

Change subject: IMPALA-4835: Part 3: switch I/O buffers to buffer pool
......................................................................


Patch Set 17:

Rebased and fixed a couple of bugs with reservation calculations that I found 
running tpch_nested at scale.

Bug 1: Rounded up instead of down with 
RoundUpToPowerOfTwo(reservation_to_distribute), leading to reservation being 
incorrectly distributed between columns. Added backend test to repro.
Bug 2: Didn't reserve memory for columns in nested collections. Added planner 
tests to directly check this.


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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ic09c6196b31e55b301df45cc56d0b72cfece6786
Gerrit-Change-Number: 8966
Gerrit-PatchSet: 17
Gerrit-Owner: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Reviewer: Bikramjeet Vig <bikramjeet....@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Comment-Date: Mon, 19 Feb 2018 20:50:13 +0000
Gerrit-HasComments: No

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