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  1. Hive
  2. HIVE-7292 Hive on Spark
  3. HIVE-8640

Support hints of SMBJoin [Spark Branch]

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    Details

    • Type: Sub-task
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: spark-branch
    • Fix Version/s: 1.1.0
    • Component/s: Spark

      Description

      HIVE-8202 supports conversion of join to SMB Join automatically, which relies on the configuration property: "hive.auto.convert.sortmerge.join.bigtable.selection.policy".

      This task is to support conversion based on map-hints, instead of this policy. As hints are deprecated, this would not be the primary policy in line with MapReduce, but can be available as a backup to achieve feature parity.

        Attachments

        1. HIVE-8640.1-spark.patch
          440 kB
          Szehon Ho
        2. HIVE-8640.2-spark.patch
          476 kB
          Szehon Ho
        3. HIVE-8640.3-spark.patch
          476 kB
          Szehon Ho

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              • Assignee:
                szehon Szehon Ho
                Reporter:
                szehon Szehon Ho
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                • Created:
                  Updated:
                  Resolved: