[SPARK-17549][sql] Only collect table size stat in driver for cached relation.#15112

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vanzin:SPARK-17549

Commits on Sep 15, 2016

[SPARK-17549][sql] Only collect table size stat in driver for cached relation.
Marcelo Vanzin
committed
Add unit test for table size stat.
Marcelo Vanzin
committed

Commits on Sep 16, 2016

Catch NonFatal() only.
Marcelo Vanzin
committed