[SPARK-1913][SQL] Bug fix: column pruning error in Parquet support#863

Closed

liancheng wants to merge 3 commits intoapache:masterfrom

liancheng:spark-1913

Commits on May 23, 2014

[SPARK-1913] Attributes referenced only in predicates pushed down should remain in ParquetTableScan operator
liancheng
committed
Added back comments deleted by mistake
liancheng
committed

Commits on May 24, 2014

Addessed the readability issue commented by @rxin
liancheng
committed