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Xiao Li commented on SPARK-12385: --------------------------------- After the combining, I believe we can see the performance gain. Also confirmed from RDBMS people that this is normal in the RDBMS compiler. > Push projection into Join > ------------------------- > > Key: SPARK-12385 > URL: https://issues.apache.org/jira/browse/SPARK-12385 > Project: Spark > Issue Type: Improvement > Components: SQL > Reporter: Davies Liu > > We usually have Join followed by a projection to pruning some columns, but > Join already have a result projection to produce UnsafeRow, we should combine > them together. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org