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Posted to dev@rocketmq.apache.org by GitBox <gi...@apache.org> on 2021/01/15 07:33:36 UTC
[GitHub] [rocketmq] lizhanhui opened a new issue #2604: Finer control of reset offset by time in terms of retry messages
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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[GitHub] [rocketmq] githublaohu commented on issue #2604: Finer control of reset offset by time in terms of retry messages
Posted by GitBox <gi...@apache.org>.
githublaohu commented on issue #2604:
URL: https://github.com/apache/rocketmq/issues/2604#issuecomment-761567895
To provide you with a curve scheme. If the probability of message failure is small, put the failed message into the database and maintain it by yourself.
为你提供一个曲线的方案。消息失败的概率小的情况，把失败的消息放到数据库里面，自己维护。
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[GitHub] [rocketmq] lizhanhui commented on issue #2604: Finer control of reset offset by time in terms of retry messages
Posted by GitBox <gi...@apache.org>.
lizhanhui commented on issue #2604:
URL: https://github.com/apache/rocketmq/issues/2604#issuecomment-764548986
@githublaohu This looks not a good idea. We need to ensure RocketMQ is self-contained. I am planning to add a mapping between the retry topic queue and topics subscribed.
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[GitHub] [rocketmq] lizhanhui commented on issue #2604: Finer control of reset offset by time in terms of retry messages
Posted by GitBox <gi...@apache.org>.
lizhanhui commented on issue #2604:
URL: https://github.com/apache/rocketmq/issues/2604#issuecomment-764548986
@githublaohu This looks not a good idea. We need to ensure RocketMQ is self-contained. I am planning to add a mapping between the retry topic queue and topics subscribed.
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