[SPARK-16403] Example cleanup and fix minor issues

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.1.0
• Component/s: Examples, PySpark
• Assignee: Bryan Cutler
• Reporter: Bryan Cutler
• Created: 06/Jul/16 21:48
• Updated: 14/Jul/16 08:13
• Resolved: 14/Jul/16 08:13

Description

General cleanup of examples, focused on PySpark ML, to remove unused imports, sync with Scala examples, improve consistency and fix minor issues such as arg checks etc.

• consistent appNames, most are camel case
• fix formatting, add newlines if difficult to read - many examples are just solid blocks of code
• should use _future_ print function
• simple_text_classification_pipeline is a duplicate of pipeline_example
• simple_params_example is a duplicate of estimator_transformer_param_example
• some spelling errors

Issue Links

• blocks: SPARK-16421 Improve output from ML examples
• links to: [Github] Pull Request #14081 (BryanCutler)