Hive
  1. Hive
  2. HIVE-6133

Support partial partition exchange

    Details

    • Type: Improvement Improvement
    • Status: Patch Available
    • Priority: Minor Minor
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Query Processor
    • Labels:
      None

      Description

      Current alter exchange coerces source and destination table to have same partition columns. But source table has sub-set of partitions and provided partition spec supplements to be a complete partition spec, it need not to be that.

      For example, table into partition

      CREATE TABLE exchange_part_test1 (f1 string) PARTITIONED BY (ds STRING);
      CREATE TABLE exchange_part_test2 (f1 string) 
      ALTER TABLE exchange_part_test1 EXCHANGE PARTITION (ds='2013-04-05') WITH TABLE exchange_part_test2;
      

      or

      partial partitions into parent partition

      CREATE TABLE exchange_part_test1 (f1 string) PARTITIONED BY (ds STRING, hr STRING);
      CREATE TABLE exchange_part_test2 (f1 string) PARTITIONED BY (hr STRING)
      ALTER TABLE exchange_part_test1 EXCHANGE PARTITION (ds='2013-04-05') WITH TABLE exchange_part_test2;
      

      can be possible.

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            • Assignee:
              Navis
              Reporter:
              Navis
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              Dates

              • Created:
                Updated:

                Development