[jira] [Created] (FLINK-3121) Watermark forwarding does not work for sources not producing any data

[Robert Metzger (JIRA)]

Robert Metzger created FLINK-3121:
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             Summary: Watermark forwarding does not work for sources not 
producing any data
                 Key: FLINK-3121
                 URL: https://issues.apache.org/jira/browse/FLINK-3121
             Project: Flink
          Issue Type: Bug
            Reporter: Robert Metzger
            Priority: Blocker


This mailing list discussion explains the issue in detail: 
http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Custom-TimestampExtractor-and-FlinkKafkaConsumer082-td3488.html

As a workaround for now, the Kafka source can emit a final watermark for 
sources not producing any data.



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