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Delay the unsubscribe to the end of handle_messages

David Douard requested to merge generated-differential-D7463-source into generated-differential-D7463-target

to prevent some possible race condition leading to kafka errors like:

rd_kafka_assignment_partition_stopped: Assertion `rktp->rktp_started' failed

This could occur when, at the time of unsubscribing from a partition, another partition is also depleted. Since the unsubscription consist in resubscribing to all partitions except unsubscribes ones, we could try to subscribe to such a depleted parition, leading to the error message listed above.

Depends on !45 (closed).

Migrated from D7463 (view on Phabricator)

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