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  1. Hive
  2. HIVE-3401

Diversify grammar for split sampling

          Details

          • Type: Improvement
          • Status: Closed
          • Priority: Trivial
          • Resolution: Fixed
          • Affects Version/s: None
          • Fix Version/s: 0.11.0
          • Component/s: Query Processor
          • Labels:
            None
          • Hadoop Flags:
            Reviewed

            Description

            Current split sampling only supports grammar like TABLESAMPLE(n PERCENT). But some users wants to specify just the size of input. It can be easily calculated with a few commands but it seemed good to support more grammars something like TABLESAMPLE(500M).

              Attachments

              1. HIVE-3401.D4821.2.patch
                37 kB
                Phabricator
              2. HIVE-3401.D4821.3.patch
                83 kB
                Phabricator
              3. HIVE-3401.D4821.4.patch
                83 kB
                Phabricator
              4. HIVE-3401.D4821.5.patch
                43 kB
                Phabricator
              5. HIVE-3401.D4821.6.patch
                50 kB
                Phabricator
              6. HIVE-3401.D4821.7.patch
                56 kB
                Phabricator

                Issue Links

                is related to

                Improvement - An improvement or enhancement to an existing feature or task. HIVE-2780 Implement more restrictive table sampler

                • Trivial - Cosmetic problem like misspelt words or misaligned text.
                • Patch Available

                  Activity

                    People

                    • Assignee:
                      navis Navis
                      Reporter:
                      navis Navis
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                      Dates

                      • Created:
                        Updated:
                        Resolved: