Tim Armstrong has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/8025 )

Change subject: IMPALA-5844: use a MemPool for expr result allocations
......................................................................


Patch Set 9:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/8025/9/be/src/exprs/agg-fn-evaluator.h
File be/src/exprs/agg-fn-evaluator.h:

http://gerrit.cloudera.org:8080/#/c/8025/9/be/src/exprs/agg-fn-evaluator.h@175
PS9, Line 175:   /// This should generally be used via ScopedResultsPool 
instead of directly.
> Yeah, we can't change the UDA interface. But was pondering whether the eval
Right, I think that changing the interface so that the caller could pass in a 
potentially different MemPool to each Serialize()/Finalize() call without 
changing the UDA interface would be more of a mess than the current code since 
you'd end up having to somehow pass the pointers around the back of the UDA 
interface for every call.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I4ba5a7542ed90a49a4b5586c040b5985a7d45b61
Gerrit-Change-Number: 8025
Gerrit-PatchSet: 9
Gerrit-Owner: Tim Armstrong <[email protected]>
Gerrit-Reviewer: Dan Hecht <[email protected]>
Gerrit-Reviewer: Michael Ho <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>
Gerrit-Comment-Date: Fri, 29 Sep 2017 00:41:19 +0000
Gerrit-HasComments: Yes

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