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https://issues.apache.org/jira/browse/IMPALA-14760?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joe McDonnell reassigned IMPALA-14760:
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Assignee: Joe McDonnell
> Add ability to use a newer Clang for compilation separately from LLVM codegen
> -----------------------------------------------------------------------------
>
> Key: IMPALA-14760
> URL: https://issues.apache.org/jira/browse/IMPALA-14760
> Project: IMPALA
> Issue Type: Task
> Components: Backend, Infrastructure
> Affects Versions: Impala 5.0.0
> Reporter: Joe McDonnell
> Assignee: Joe McDonnell
> Priority: Major
>
> Upgrading LLVM for codegen is difficult and performance sensitive. However,
> the Clang that we use for sanitizer builds like ASAN/TSAN/UBSAN is much
> easier to upgrade. It would be useful to be able to build Impala using a
> newer Clang without upgrading the LLVM version used for codegen. We've had
> multiple issues on the sanitizer builds that needed patches to Clang
> (IMPALA-13190 / roaring bitmap) or libstdc++ (IMPALA-14092 / Paimon support).
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