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Posted to jira@arrow.apache.org by "Vibhatha Lakmal Abeykoon (Jira)" <ji...@apache.org> on 2022/07/25 07:10:00 UTC

[jira] [Created] (ARROW-17196) [C++] Optimize Fetch Node to avoid collecting all records for non-sort setting

Vibhatha Lakmal Abeykoon created ARROW-17196:
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             Summary: [C++] Optimize Fetch Node to avoid collecting all records for non-sort setting
                 Key: ARROW-17196
                 URL: https://issues.apache.org/jira/browse/ARROW-17196
             Project: Apache Arrow
          Issue Type: Sub-task
            Reporter: Vibhatha Lakmal Abeykoon


The current/initial implementation of Fetch node collects all the records and then do a fetch. Without doing it while watching the input stream, only collect the required amount of records with an offset. Also it is important to evaluate if the order can be retained. 



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