Metadata propagation should also work for existing topics #4905
+6
−2
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Fixes: #4904
When a topic is created, all brokers do not immediately know about its existence. That leads to a race condition, where from a producer's perspective topic may seem to be created and deleted immediately afterward.
Thus we should wait for the topic propagation time before deleting the topic from the cache.
Test results (no more unknow topic or partition errors):