[jira] [Created] (FLINK-12169) Improve Javadoc of MessageAcknowledgingSourceBase

[Shang Yuanchun (Jira)]

Konstantin Knauf created FLINK-12169:
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             Summary: Improve Javadoc of MessageAcknowledgingSourceBase
                 Key: FLINK-12169
                 URL: https://issues.apache.org/jira/browse/FLINK-12169
             Project: Flink
          Issue Type: Improvement
            Reporter: Konstantin Knauf
            Assignee: Konstantin Knauf


{{MessageAcknowledgingSourceBase}} could do a better job explaining how implementing classes need to interact with it to achieve exactly-once guarantees.



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