Hello Yida Wu, Zoltan Borok-Nagy, Michael Smith, Impala Public Jenkins,
I'd like you to reexamine a change. Please visit
http://gerrit.cloudera.org:8080/21571
to look at the new patch set (#5).
Change subject: IMPALA-13209: Optimize ConvertRowBatchTime in ExchangeNode
......................................................................
IMPALA-13209: Optimize ConvertRowBatchTime in ExchangeNode
The patch optimizes the most common case when the src and dst
RowBatches have the same number of tuples per row.
ConvertRowBatchTime is decreased from >600ms to <100ms in a query
with busy exchange node:
set mt_dop=8;
select straight_join count(*) from tpcds_parquet.store_sales s1
join /*+broadcast*/ tpcds_parquet.store_sales16 s2
on s1.ss_customer_sk = s2.ss_customer_sk;
TPCDS-20 showed minor improvement (0.77%). The affect is likely to
be larger if more nodes are involved.
Testing:
- passed core tests
Change-Id: Iab94315364e8886da1ae01cf6af623812a2da9cb
---
M be/src/exec/exchange-node.cc
M be/src/runtime/row-batch.cc
M be/src/runtime/row-batch.h
3 files changed, 48 insertions(+), 16 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/71/21571/5
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Iab94315364e8886da1ae01cf6af623812a2da9cb
Gerrit-Change-Number: 21571
Gerrit-PatchSet: 5
Gerrit-Owner: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Csaba Ringhofer <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Michael Smith <[email protected]>
Gerrit-Reviewer: Yida Wu <[email protected]>
Gerrit-Reviewer: Zoltan Borok-Nagy <[email protected]>
