[SPARK-20979] Add a rate source to generate values for tests and benchmark

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.0
• Fix Version/s: 2.2.0, 2.3.0
• Component/s: Structured Streaming
• Assignee: Shixiong Zhu
• Reporter: Shixiong Zhu
• Created: 05/Jun/17 05:22
• Updated: 13/Jun/17 23:41
• Resolved: 12/Jun/17 21:58

Issue Links

• relates to: SPARK-21069 Add rate source to programming guide
• links to: [Github] Pull Request #18199 (zsxwing)