[SPARK-5038] Add explicit return type for all implicit functions

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 1.3.0
• Assignee: Reynold Xin
• Reporter: Reynold Xin
• Created: 31/Dec/14 19:20
• Updated: 24/Jan/15 23:38
• Resolved: 24/Jan/15 23:38

Description

As we learned in https://github.com/apache/spark/pull/3580, not explicitly typing implicit functions can lead to compiler bugs and potentially unexpected runtime behavior.

Issue Links

• links to: [Github] Pull Request #3859 (rxin)
• links to: [Github] Pull Request #3860 (rxin)