Hive
  1. Hive
  2. HIVE-1752

Avoid UnionStructObjectInspector for partition columns when necessary

    Details

    • Type: Improvement Improvement
    • Status: Open
    • Priority: Major Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
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      Description

      Once HIVE-1750 and HIVE-1538 are finished, union struct for partition columns and normal columns is not needed anymore. We can save some costs by not having the struct.

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          Namit Jain added a comment -

          Copying from HIVE-1750,

          For eg, if T is partitioned on ds,
          and the query is:

          select c1 from T where ds = '1' and c2 > 10;

          there is no reason to add 'ds' to each row

          Show
          Namit Jain added a comment - Copying from HIVE-1750 , For eg, if T is partitioned on ds, and the query is: select c1 from T where ds = '1' and c2 > 10; there is no reason to add 'ds' to each row

            People

            • Assignee:
              Siying Dong
              Reporter:
              Siying Dong
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              Dates

              • Created:
                Updated:

                Development