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https://issues.apache.org/jira/browse/FLINK-20058?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jark Wu reassigned FLINK-20058:
-------------------------------
Assignee: Shengkai Fang
> Improve kafka per-partition-watermark tests
> -------------------------------------------
>
> Key: FLINK-20058
> URL: https://issues.apache.org/jira/browse/FLINK-20058
> Project: Flink
> Issue Type: Improvement
> Components: Connectors / Kafka, Table SQL / API
> Affects Versions: 1.12.0
> Reporter: Shengkai Fang
> Assignee: Shengkai Fang
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.12.0
>
>
> Currenlty, we have already pushed watermark into the kafka table source. If
> the consumer doesn't get data from each partition, it will not output a valid
> watermark. In the test {{KafkaTableITCase#testPerPartitionWatermark}} the
> test sink will drop the record whose rowtime is late than watermark. If the
> consumer reads the partition where number of records in the partition is 1 at
> last, the sink will receive the valid watermark when all data has been
> emitted. Therefore, we'd better to keep the data number in all partitions are
> more than 1.
>
> Considering, we have already pushed watermark into the source, the issue
> FLINK-19878 has been solved.
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