Joe McDonnell has uploaded this change for review. ( http://gerrit.cloudera.org:8080/19207
Change subject: IMPALA-11603: Build against Cloudflare ZLIB by default ...................................................................... IMPALA-11603: Build against Cloudflare ZLIB by default Cloudflare Zlib is a fork of the Zlib codebase that has been optimized to take advantage of CPU SIMD instructions and other platform-specific optimizations. It has the same license as regular Zlib. Amazon has touted this as a major speedup over regular Zlib: https://aws.amazon.com/blogs/opensource/improving-zlib-cloudflare-and-comparing-performance-with-other-zlib-forks/ This adds the IMPALA_USE_CLOUDFLARE_ZLIB environment variable which allows Impala to be built against Cloudflare Zlib. This defaults to true. If set to any other value, it will build against regular Zlib. Cloudflare Zlib shows a clear performance benefit over regular Zlib on TPC-H ORC/deflate benchmark: +----------+-------------------+---------+------------+------------+----------------+ | Workload | File Format | Avg (s) | Delta(Avg) | GeoMean(s) | Delta(GeoMean) | +----------+-------------------+---------+------------+------------+----------------+ | TPCH(42) | orc / def / block | 4.18 | -6.43% | 3.29 | -6.74% | +----------+-------------------+---------+------------+------------+----------------+ Testing: - Ran GVO tests and exhaustive release tests Change-Id: I82c480890726da0fa5bdc2a646022554eec181f4 --- M CMakeLists.txt M bin/bootstrap_toolchain.py M bin/impala-config.sh 3 files changed, 18 insertions(+), 4 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/07/19207/5 -- To view, visit http://gerrit.cloudera.org:8080/19207 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: newchange Gerrit-Change-Id: I82c480890726da0fa5bdc2a646022554eec181f4 Gerrit-Change-Number: 19207 Gerrit-PatchSet: 5 Gerrit-Owner: Joe McDonnell <[email protected]> Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
