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  1. IMPALA
  2. IMPALA-11613

Optimize result spooling for the statement that returns at most one row

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Details

    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
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    Description

      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: 

      1. If it contains string or complex data types we set the reservation as max_row_size.
      2. Others compute the row size.

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          Improvement - An improvement or enhancement to an existing feature or task. IMPALA-11418 Optimize select contant statement min memory reservation

          • Major - Major loss of function.
          • Resolved

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              xqhe Xianqing He
              xqhe Xianqing He
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              Dates

                Created:
                Updated: