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Posted to issues-all@impala.apache.org by "Noemi Pap-Takacs (Jira)" <ji...@apache.org> on 2022/08/03 15:12:00 UTC

[jira] [Created] (IMPALA-11474) Codegen Tuple size in Sorter

Noemi Pap-Takacs created IMPALA-11474:
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             Summary: Codegen Tuple size in Sorter
                 Key: IMPALA-11474
                 URL: https://issues.apache.org/jira/browse/IMPALA-11474
             Project: IMPALA
          Issue Type: Improvement
          Components: Backend
            Reporter: Noemi Pap-Takacs


The sorter works with fixed-length tuples. The number of bytes in a tuple is known before execution, it is available in the query plan. However, currently the tuple size is treated as a member variable in the TupleSorter. Using Codegen to replace this member variable by a constant in sorter-ir.cc could speed up the quicksort phase.



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