Uploaded image for project: 'Hive'
  1. Hive
  2. HIVE-7148

Use murmur hash to create bucketed tables

    XMLWordPrintableJSON

Details

    • Bug
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • None
    • None

    Description

      HIVE-7121 introduced murmur hashing for queries that don't insert into bucketed tables. This was done to achieve better distribution of the data. The same should be done for bucketed tables as well, but this involves making sure we don't break backwards compat. This probably means that we have to store the partitioning function used in the metadata and use that to determine if SMB and bucketed map-join optimizations apply.

      Attachments

        Issue Links

          depends upon

          Bug - A problem which impairs or prevents the functions of the product. HIVE-7121 Use murmur hash to distribute HiveKey

          • Major - Major loss of function.
          • Resolved

          Activity

            People

              Unassigned Unassigned
              hagleitn Gunther Hagleitner
              Votes:
              0 Vote for this issue
              Watchers:
              4 Start watching this issue

              Dates

                Created:
                Updated: