Impala Public Jenkins has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/14290 )

Change subject: IMPALA-8969: Grouping aggregator can cause segmentation fault 
when doing multiple aggregations
......................................................................

IMPALA-8969: Grouping aggregator can cause segmentation fault when doing 
multiple aggregations

Grouping aggregator always tried to serialize the 0th tuple regardless
of the aggregation index. This could lead to a segmentation fault
because the 0th tuple might be null.

Testing:
Added a query that triggers the error to multiple-distinct-aggs.test

Change-Id: I7acdd40c63166cd4986e546a992c0816f94823d5
Reviewed-on: http://gerrit.cloudera.org:8080/14290
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
---
M be/src/exec/grouping-aggregator-ir.cc
M 
testdata/workloads/functional-query/queries/QueryTest/multiple-distinct-aggs.test
2 files changed, 18 insertions(+), 2 deletions(-)

Approvals:
  Impala Public Jenkins: Looks good to me, approved; Verified

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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: merged
Gerrit-Change-Id: I7acdd40c63166cd4986e546a992c0816f94823d5
Gerrit-Change-Number: 14290
Gerrit-PatchSet: 3
Gerrit-Owner: Zoltan Borok-Nagy <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Thomas Tauber-Marshall <[email protected]>

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