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Posted to issues@impala.apache.org by "Xianqing He (Jira)" <ji...@apache.org> on 2022/09/26 08:48:00 UTC

[jira] [Created] (IMPALA-11613) Optimize result spooling for the statement that returns at most one row

Xianqing He created IMPALA-11613:
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             Summary: Optimize result spooling for the statement that returns at most one row
                 Key: IMPALA-11613
                 URL: https://issues.apache.org/jira/browse/IMPALA-11613
             Project: IMPALA
          Issue Type: Improvement
            Reporter: Xianqing He
            Assignee: Xianqing He


If result spooling is enabled and the statement that returns at most one row, we can 
set the min memory reservation by the  row size.
 
The strategy is as follows: # If it contains complex data types we set the reservation as before.
 # If it contains string type we set the reservation as max_row_size.
 # Others compute the row size.



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