lizhanhui opened a new issue #2604:
URL: https://github.com/apache/rocketmq/issues/2604
When members of a consumer group subscribe to multiple topics, retry
messages and dead-letter messages are sent back to special
topics(%RETRY%${GROUP_NAME}, %DLQ%${GROUP_NAME}) when necessary.
This mechanism works well in normal cases. Consider we wish to reset to skip
all messages of a topic prior to a specified time point, it would be impossible
to achieve this goal since messages in retry and DLQ are mixed together.
With this said, we need to separate them according to the topic (OR original
message queue in case we further support reset by queue?)
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