Takeshi Yamamuro created SPARK-12686:
----------------------------------------
Summary: Support group-by push down into data sources
Key: SPARK-12686
URL: https://issues.apache.org/jira/browse/SPARK-12686
Project: Spark
Issue Type: Improvement
Components: SQL
Affects Versions: 1.6.0
Reporter: Takeshi Yamamuro
As for logical plan nodes like 'Aggregate -> Project -> (Filter) -> Scan', we
can push down partial aggregation processing into data sources that could
aggregate their own data efficiently because Orc/Parquet could fetch the
MIN/MAX value by using statistics data and some databases have efficient
aggregation implementations.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
