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  1. Hive
  2. HIVE-6292

ponder doing stats-based aggregations in metastore

    Details

    • Type: Improvement Improvement
    • Status: Open
    • Priority: Major Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Metastore, Statistics
    • Labels:
      None

      Description

      StatsOptimizer currently fetches partition stats from metastore and then performs the aggregation. We could do some of these aggregations directly in metastore. It's probably not a very good idea to mess with SQL queries against underlying database, but at least if MS did the same loops we could avoid a bunch of network communication; that would be esp. good for tables with very large number of partitions.

        Issue Links

          Activity

          Sergey Shelukhin created issue -
          Sergey Shelukhin made changes -
          Field Original Value New Value
          Link This issue is blocked by HIVE-6157 [ HIVE-6157 ]

            People

            • Assignee:
              Unassigned
              Reporter:
              Sergey Shelukhin
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              Dates

              • Created:
                Updated:

                Development