[jira] [Created] (FLINK-19494) Adjust "StreamExecutionEnvironment.generateSequence()" to new API Sources

[Shang Yuanchun (Jira)]

Stephan Ewen created FLINK-19494:
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             Summary: Adjust "StreamExecutionEnvironment.generateSequence()" to new API Sources
                 Key: FLINK-19494
                 URL: https://issues.apache.org/jira/browse/FLINK-19494
             Project: Flink
          Issue Type: Improvement
          Components: API / DataStream
            Reporter: Stephan Ewen
             Fix For: 1.12.0


The utility method {{StreamExecutionEnvironmant.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




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