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Posted to issues@impala.apache.org by "Zihao Ye (Jira)" <ji...@apache.org> on 2024/12/02 09:37:00 UTC

[jira] [Created] (IMPALA-13590) The CACHELINE_ALIGNED of PerFilterState may not work on dynamic allocations

Zihao Ye created IMPALA-13590:
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             Summary: The CACHELINE_ALIGNED of PerFilterState may not work on dynamic allocations
                 Key: IMPALA-13590
                 URL: https://issues.apache.org/jira/browse/IMPALA-13590
             Project: IMPALA
          Issue Type: Bug
          Components: Backend
    Affects Versions: Impala 4.4.1
            Reporter: Zihao Ye


The PerFilterState class is marked with CACHELINE_ALIGNED: [https://github.com/apache/impala/blob/8416432cc3e656b6c5fa230d4075ba64e0f3d091/be/src/runtime/runtime-filter-bank.h#L300]

And its creation is dynamic: [https://github.com/apache/impala/blob/8416432cc3e656b6c5fa230d4075ba64e0f3d091/be/src/runtime/runtime-filter-bank.cc#L116]

According to this response, such a combination may be ineffective: [https://stackoverflow.com/questions/19251360/attribute-alignedx-doesnt-work-on-dynamic-allocations].



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