drpmma commented on issue #5690:
URL: https://github.com/apache/rocketmq/issues/5690#issuecomment-1352502643
> @drpmma If not use the append-only, what can go wrong with this? such as,
if the broker-a scaling up the queues, the proxy get metadata broker-a {0, 1,
2, 3, 4, 5, 6, 7} and broker-b{0,1,2,3}, then recalculate the queue mappings.
What i can think of is the proxy's queue mapping can be inconsistent when some
proxys pull metadata delay. What is the impact on the client? I am very curious
how Aliyun MQ implements it, because it's 5.x commercial products support the
4.x sdk, any ideas?
Firstly, we need to clarify how the metadata is stored before more
discussion. What is your opinion on metadata storage?
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