[FLINK-19494] Add StreamExecutionEnvironment.fromSequence()

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.12.0
• Component/s: API / DataStream
• Labels: pull-request-available
• Assignee: Nicholas Jiang
• Reporter: Stephan Ewen
• Created: 02/Oct/20 13:12
• Updated: 27/Oct/20 15:14
• Resolved: 27/Oct/20 15:14

Description

The utility method StreamExecutionEnvironment.generateSequence(() should instantiate the new NumberSequenceSource rather than the existing StatefulSequenceSource.

We should also deprecate the StatefulSequenceSource as part of this change, because

• it is based on the legacy source API
• it is not scalable, because it materializes the sequence

Issue Links

• links to: GitHub Pull Request #13637