Sergey Shelukhin created HIVE-6292:
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Summary: ponder doing stats-based aggregations in metastore
Key: HIVE-6292
URL: https://issues.apache.org/jira/browse/HIVE-6292
Project: Hive
Issue Type: Improvement
Components: Metastore, Statistics
Reporter: Sergey Shelukhin
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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