Details

    • Type: New Feature New Feature
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.8.0
    • Component/s: Query Processor
    • Labels:
      None
    • Hadoop Flags:
      Reviewed
    • Release Note:
      This patch adds support for the 'TABLESAMPLE(x PERCENT)' clause.

      Description

      We need a better input sampling to serve at least two purposes:
      1. test their queries against a smaller data set
      2. understand more about how the data look like without scanning the whole table.
      A simple function that gives a subset splits will help in those cases. It doesn't have to be strict sampling.

      1. HIVE-2121.1.patch
        37 kB
        Siying Dong
      2. HIVE-2121.2.patch
        208 kB
        Siying Dong
      3. HIVE-2121.3.patch
        210 kB
        Siying Dong
      4. HIVE-2121.4.patch
        209 kB
        Siying Dong
      5. HIVE-2121.5.patch
        218 kB
        Siying Dong
      6. HIVE-2121.6.patch
        266 kB
        Siying Dong
      7. HIVE-2121.7.patch
        266 kB
        Siying Dong
      8. HIVE-2121.8.patch
        754 kB
        Siying Dong

        Activity

        No work has yet been logged on this issue.

          People

          • Assignee:
            Siying Dong
            Reporter:
            Siying Dong
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            Watchers:
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            Dates

            • Created:
              Updated:
              Resolved:

              Development