[jira] [Created] (FLINK-21159) KafkaSourceEnumerator not sending NoMoreSplitsEvent to unassigned reader

[Shang Yuanchun (Jira)]

Qingsheng Ren created FLINK-21159:
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             Summary: KafkaSourceEnumerator not sending NoMoreSplitsEvent to unassigned reader
                 Key: FLINK-21159
                 URL: https://issues.apache.org/jira/browse/FLINK-21159
             Project: Flink
          Issue Type: Bug
          Components: Connectors / Kafka
            Reporter: Qingsheng Ren


Kafka split enumerator only sends {{NoMoreSplitsEvent}} when assigning splits to a reader. If a reader is not assigned with any splits, it won't receive `NoMoreSplitsEvent`, and the subtask will stay in RUNNING state forever but not actually working.  



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