Impala Public Jenkins has submitted this change and it was merged.

Change subject: IMPALA-5611: KuduPartitionExpr holds onto memory unnecessarily
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IMPALA-5611: KuduPartitionExpr holds onto memory unnecessarily

IMPALA-3742 introduced KuduPartitionExpr, which takes a row and passes
it to the Kudu client to determine what partitionit belongs to.

The DataStreamSender never frees the local allocations for the Kudu
partition exprs causing it to hang on to memory longer than it needs to.

This patch also fixes two other related issues:
- DataStreamSender was dropping the Status from AddRow in the Kudu
  branch. Adds 'RETURN_IF_ERROR' and 'WARN_UNUSED_RESULT'
- Changes the HASH case in DataStreamSender to call FreeLocalAllocations
  on a per-batch basis, instead of a per-row basis.

Testing:
- Added an e2e test that runs a large insert with a mem limit that
  failed with oom previously.

Change-Id: Ia661eb8bed114070728a1497ccf7ed6893237e5e
Reviewed-on: http://gerrit.cloudera.org:8080/7346
Reviewed-by: Dan Hecht <[email protected]>
Reviewed-by: Michael Ho <[email protected]>
Tested-by: Impala Public Jenkins
---
M be/src/runtime/data-stream-sender.cc
M testdata/workloads/functional-query/queries/QueryTest/kudu_insert.test
2 files changed, 13 insertions(+), 7 deletions(-)

Approvals:
  Impala Public Jenkins: Verified
  Michael Ho: Looks good to me, but someone else must approve
  Dan Hecht: Looks good to me, approved



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Gerrit-MessageType: merged
Gerrit-Change-Id: Ia661eb8bed114070728a1497ccf7ed6893237e5e
Gerrit-PatchSet: 6
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Thomas Tauber-Marshall <[email protected]>
Gerrit-Reviewer: Dan Hecht <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins
Gerrit-Reviewer: Matthew Jacobs <[email protected]>
Gerrit-Reviewer: Michael Ho
Gerrit-Reviewer: Michael Ho <[email protected]>
Gerrit-Reviewer: Thomas Tauber-Marshall <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>

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