Description
Currently , Spark supports push down aggregate with partial-agg and final-agg . For some data source (e.g. JDBC ) , we can avoid partial-agg and final-agg by running completely on database.
Currently , Spark supports push down aggregate with partial-agg and final-agg . For some data source (e.g. JDBC ) , we can avoid partial-agg and final-agg by running completely on database.