[
https://issues.apache.org/jira/browse/IMPALA-14715?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Michael Smith resolved IMPALA-14715.
------------------------------------
Fix Version/s: Impala 5.0.0
Resolution: Fixed
> AVX2 detection in be/src/kudu/util is broken
> --------------------------------------------
>
> Key: IMPALA-14715
> URL: https://issues.apache.org/jira/browse/IMPALA-14715
> Project: IMPALA
> Issue Type: Bug
> Components: Backend, Infrastructure
> Affects Versions: Impala 5.0.0
> Reporter: Joe McDonnell
> Assignee: Joe McDonnell
> Priority: Blocker
> Fix For: Impala 5.0.0
>
>
> On x86_64, we're seeing that AVX2 is not being detected even though the
> system supports it:
> {noformat}
> 2026-01-30 12:38:12 - INFO-root::util|421:: Compiler does not support
> AVX2{noformat}
> This is happening for the be/src/kudu/util detection
> ([https://github.com/apache/impala/blob/6a0eedf4af137828257529501ace360208af0a3c/be/src/kudu/util/CMakeLists.txt#L293-L300]
> ), but it is not happening for the be/src/util detection
> ([https://github.com/apache/impala/blob/6a0eedf4af137828257529501ace360208af0a3c/be/src/util/CMakeLists.txt#L125-L131]
> ). It looks like this changed when we rebased Kudu.
> Kudu's check seems to work in their project, but not for us. It's unclear
> what is different.
> This disables AVX2 support for block bloom filters, costing us performance.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
