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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