Uploaded image for project: 'Spark'
  1. Spark
  2. SPARK-3860 Improve dimension joins
  3. SPARK-3861

Avoid rebuilding hash tables on each partition

    XMLWordPrintableJSON

Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • None
    • 1.2.0
    • SQL
    • None

    Description

      BroadcastHashJoin builds a new hash table for each partition. We can build it once per node and reuse the hash table.

      Attachments

        Activity

          People

            rxin Reynold Xin
            rxin Reynold Xin
            Votes:
            0 Vote for this issue
            Watchers:
            3 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved: