Joe McDonnell created IMPALA-13387:
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Summary: Add ability to compile against zlib-ng
Key: IMPALA-13387
URL: https://issues.apache.org/jira/browse/IMPALA-13387
Project: IMPALA
Issue Type: Improvement
Components: Infrastructure
Affects Versions: Impala 4.5.0
Reporter: Joe McDonnell
Regular zlib doesn't take advantage of CPU features like AVX, etc. Impala
already supports building against Cloudflare zlib, but Cloudflare zlib is
irregularly maintained. For example, Cloudflare zlib doesn't not implement
crc32_z, which has been in regular Zlib for several years. This means that it
can't be used to compile the Mold linker.
Zlib-ng is more regularly maintained, and Fedora has talked about shipping it
as the default Zlib. Zlib-ng has incorporated the performance fixes that were
in Cloudflare zlib, so it should be just as fast (if not faster).
We should support building against it, and it should probably replace
Cloudflare zlib as the default that we ship.
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