Tim Armstrong has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/10871 )

Change subject: IMPALA-7251: Fix QueryMaintenance calls in Aggregators
......................................................................


Patch Set 1:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/10871/1/testdata/workloads/functional-query/queries/QueryTest/spilling-regression-exhaustive.test
File 
testdata/workloads/functional-query/queries/QueryTest/spilling-regression-exhaustive.test:

http://gerrit.cloudera.org:8080/#/c/10871/1/testdata/workloads/functional-query/queries/QueryTest/spilling-regression-exhaustive.test@253
PS1, Line 253: select count(distinct concat(cast(l_comment as char(120)), 
cast(l_comment as char(120)),
I think there's still a similar bug in NonGroupingAggregator if the expressions 
evaluated for the aggregate function accumulate memory, e.g.

  select min(regexp_replace(l_comment, ".", "x"))
from tpch.lineitem

I also noticed that the memory accounting in the exec summary is wrong because 
Aggregator::mem_tracker_'s parent isn't the ExecNodes.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I4dac2bb0a15cdd7315ee15608bae409c125c82f5
Gerrit-Change-Number: 10871
Gerrit-PatchSet: 1
Gerrit-Owner: Thomas Marshall <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>
Gerrit-Comment-Date: Fri, 06 Jul 2018 00:54:08 +0000
Gerrit-HasComments: Yes

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