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  1. Hive
  2. HIVE-6292

ponder doing stats-based aggregations in metastore

    Details

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

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              • Assignee:
                Unassigned
                Reporter:
                sershe Sergey Shelukhin
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                • Created:
                  Updated: