[jira] [Created] (SPARK-15734) Avoids printing internal row in explain output

["Sean Zhong (JIRA)" <ji...@apache.org>]

Sean Zhong created SPARK-15734:
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             Summary: Avoids printing internal row in explain output
                 Key: SPARK-15734
                 URL: https://issues.apache.org/jira/browse/SPARK-15734
             Project: Spark
          Issue Type: Improvement
          Components: SQL
            Reporter: Sean Zhong
            Priority: Minor


Avoids printing internal rows in explain out

In explain output, some operator may prints internal Rows. For example, for LocalRelation, the explain output may looks like this:

{code}
scala> (1 to 10).toSeq.map(_ => (1,2,3)).toDF().createTempView("df3")
scala> spark.sql("select * from df3 where 1=2").explain(true)
...

== Analyzed Logical Plan ==
_1: int, _2: int, _3: int
Project [_1#37,_2#38,_3#39]
+- Filter (1 = 2)
   +- SubqueryAlias df3
      +- LocalRelation [_1#37,_2#38,_3#39], [[0,1,2,3],[0,1,2,3],[0,1,2,3],[0,1,2,3],[0,1,2,3],[0,1,2,3],[0,1,2,3],[0,1,2,3],[0,1,2,3],[0,1,2,3]]
...
{code}



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