apache/spark — pull request #1015 by chenghao-intel (2014-06-09 05:23:29+00:00)
Title: [SPARK-2076][SQL] Pushdown the join filter & predication for outer join

As the rule described in https://cwiki.apache.org/confluence/display/Hive/OuterJoinBehavior, we can optimize the SQL Join by pushing down the Join predicate and Where predicate.