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Posted to issues@impala.apache.org by "Yida Wu (Jira)" <ji...@apache.org> on 2022/12/07 22:32:00 UTC

[jira] [Created] (IMPALA-11783) Safety enhancement for codegen cache in OPTIMAL mode

Yida Wu created IMPALA-11783:
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             Summary: Safety enhancement for codegen cache in OPTIMAL mode
                 Key: IMPALA-11783
                 URL: https://issues.apache.org/jira/browse/IMPALA-11783
             Project: IMPALA
          Issue Type: Improvement
            Reporter: Yida Wu


The optimal mode of the codegen cache uses the hashcode and the length combination as the key, it could have a collision issue, to enhance the safety of reusing the codegen functions from the cache in optimal mode, we can add a check to make sure the arguments and return type of the cached functions are as expected.



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