[SPARK-19499] Add more notes in the comments of Sink.addBatch()

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.0, 2.0.1, 2.0.2, 2.1.0
• Fix Version/s: 2.1.1, 2.2.0
• Component/s: Structured Streaming
• Assignee: Nan Zhu
• Reporter: Nan Zhu
• Created: 07/Feb/17 18:34
• Updated: 08/Feb/17 04:25
• Resolved: 08/Feb/17 04:25

Description

addBatch method in Sink trait is supposed to be a synchronous method to coordinate with the fault-tolerance design in StreamingExecution (being different with the compute() method in DStream)

We need to add more notes in the comments of this method to remind the developers

Issue Links

• links to: [Github] Pull Request #16840 (CodingCat)