Kurt Deschler has uploaded this change for review. (
http://gerrit.cloudera.org:8080/19875
Change subject: IMPALA-12134: Optimize row materialization time
......................................................................
IMPALA-12134: Optimize row materialization time
This patch improves row materialization time by providing specialized
formatting logic for default date and timestamp formats and by caching
deserialized column metadata to avoid unnecessary per-row cost.
Benchmarks:
- Manually tested mixed datatype table showed ~20% reduction in row
materialization time
- Added cases to date-benchmark for new formatters. Date formatting
improved by 3x and timestamp by 2x
Machine Info: Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz
ToYearMonthDay: Function iters/ms
-------------------------------------------------------
TestCctzToYearMonthDay 15.5
TestToYearMonthDay 61.1
TestToYear 348
TestToString 9.54
TestToString_stringstream 2.04
TestDefaultDateToCharBuf 27
TestTimestampToString 6.27
TestDefaultTimestampToCharBuf 13.8
Testing:
- Ran core tests
Change-Id: I1ef5e4137fa6c2d0a5f08b430e01e3fb7de86330
---
M be/src/benchmarks/date-benchmark.cc
M be/src/runtime/date-parse-util.cc
M be/src/runtime/date-parse-util.h
M be/src/runtime/date-value.cc
M be/src/runtime/datetime-simple-date-format-parser.h
M be/src/runtime/timestamp-parse-util.cc
M be/src/runtime/timestamp-parse-util.h
M be/src/runtime/timestamp-value.cc
M be/src/service/query-result-set.cc
9 files changed, 163 insertions(+), 12 deletions(-)
git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/75/19875/1
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I1ef5e4137fa6c2d0a5f08b430e01e3fb7de86330
Gerrit-Change-Number: 19875
Gerrit-PatchSet: 1
Gerrit-Owner: Kurt Deschler <[email protected]>
