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https://issues.apache.org/jira/browse/FLINK-3542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Konstantin Knauf reopened FLINK-3542:
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Re-opening in accordance with https://issues.apache.org/jira/browse/FLINK-23206.
> FlinkKafkaConsumer09 cannot handle changing number of partitions
> ----------------------------------------------------------------
>
> Key: FLINK-3542
> URL: https://issues.apache.org/jira/browse/FLINK-3542
> Project: Flink
> Issue Type: Improvement
> Components: Connectors / Kafka
> Affects Versions: 1.0.0
> Reporter: Till Rohrmann
> Priority: Minor
> Labels: auto-closed
>
> The current {{FlinkKafkaConsumer09}} cannot handle increasing the number of
> partitions of a topic while running. The consumer will simply leave the newly
> created partitions out and thus miss all data which is written to the new
> partitions. The reason seems to be a static assignment of partitions to
> consumer tasks when the job is started.
> We should either fix this behaviour or clearly document it in the online and
> code docs.
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