Bug fix: RLDecoder.hasNext may lose duplicated values
Initial commit of bringing back map join hints.
Merge pull request #328 from liancheng/rle-decoder-bugfix

Bug fix: RLDecoder.hasNext may lose duplicated values
Merge pull request #330 from yhuai/mapJoin

Initial commit of bringing back map join hints.
Fix the crash for map pruning when the column value is not a constant.
Merge pull request #331 from rxin/mapprune

Fix the crash for map pruning when the column value is not a constant.
Avoid starting SparkContext in remote mode.
Merge pull request #332 from rxin/remote

Avoid starting SparkContext in remote mode.