Github user rmetzger commented on the pull request:
https://github.com/apache/flink/pull/1395#issuecomment-159676808
> Could it happen that a broker is currently not available but will be in
the future.
Yes. With this PR, the consumer fails only if NO broker is available. As
long as we can get the partition id's of the topic, the consumer will start.
> With the behaviour before this PR could Flink then idle and start
consuming once the broker becomes available?
No. The parallel consuming thread deployed to the cluster are initialized
with a list of partition IDs from the topic. If we can not get the partition
IDs when creating the consumer, we can never assign the partitions to the
consumers.
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