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Posted to jira@arrow.apache.org by "Antoine Pitrou (Jira)" <ji...@apache.org> on 2021/09/29 07:41:00 UTC

[jira] [Created] (ARROW-14165) [C++] Improve table sort performance #2

Antoine Pitrou created ARROW-14165:
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             Summary: [C++] Improve table sort performance #2
                 Key: ARROW-14165
                 URL: https://issues.apache.org/jira/browse/ARROW-14165
             Project: Apache Arrow
          Issue Type: Task
          Components: C++
            Reporter: Antoine Pitrou


After ARROW-10898 is solved, it seems some performance may still be left on the table when merging sorted record batches. Two possible directions:
* save on chunked indexing by relying on record batches and directly accessing subsequent columns in MultipleKeyComparator
* use left-to-right "radix" merging



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