Cheng Lian 61ab08549c [Minor] [SQL] Cleans up DataFrame variable names and toDF() calls ... Although we've migrated to the DataFrame API, lots of code still uses `rdd` or `srdd` as local variable names. This PR tries to address these naming inconsistencies and some other minor DataFrame related style issues. <!-- Reviewable:start --> [<img src="https://reviewable.io/review_button.png" height=40 alt="Review on Reviewable"/>](https://reviewable.io/reviews/apache/spark/4670) <!-- Reviewable:end --> Author: Cheng Lian <lian@databricks.com> Closes #4670 from liancheng/df-cleanup and squashes the following commits: 3e14448 [Cheng Lian] Cleans up DataFrame variable names and toDF() calls		2015-02-17 23:36:20 -08:00
..
java/org/apache/spark/sql	[SPARK-5166][SPARK-5247][SPARK-5258][SQL] API Cleanup / Documentation	2015-02-17 10:21:17 -08:00
resources	[SPARK-5454] More robust handling of self joins	2015-02-11 12:31:56 -08:00
scala/org/apache/spark/sql	[Minor] [SQL] Cleans up DataFrame variable names and toDF() calls	2015-02-17 23:36:20 -08:00