[SPARK-21988] Add default stats to StreamingExecutionRelation.#19212

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jose-torres wants to merge 2 commits intoapache:masterfrom

jose-torres:SPARK-21988

Commits on Sep 12, 2017

Add default stats to StreamingExecutionRelation.
jose-torres
committed

Commits on Sep 13, 2017

fix unit test to check output instead of print
jose-torres
committed