Impala Public Jenkins has submitted this change and it was merged. ( 
http://gerrit.cloudera.org:8080/17869 )

Change subject: IMPALA-10956: datasketches UDFs: memory leak and merge overhead
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IMPALA-10956: datasketches UDFs: memory leak and merge overhead

- call destructors of sketch and union objects
- avoid overhead of constructing union and getting result from it every time

Change-Id: I8dd0e6736f4266f74f5f265f58d40a4e4707287f
Reviewed-on: http://gerrit.cloudera.org:8080/17869
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
---
M be/src/exprs/aggregate-functions-ir.cc
1 file changed, 273 insertions(+), 195 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: I8dd0e6736f4266f74f5f265f58d40a4e4707287f
Gerrit-Change-Number: 17869
Gerrit-PatchSet: 6
Gerrit-Owner: Alexander Saydakov <[email protected]>
Gerrit-Reviewer: Alexander Saydakov <[email protected]>
Gerrit-Reviewer: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Fucun Chu <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>

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