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[ISSUE #7026] When there is no master, proxy method 'getBrokerAddr' should not return null, but the address of slave

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### Which Issue(s) This PR Fixes Fixes #7026 ### Brief Description When there is no master, method 'getBrokerAddr' should not return null, but the address of slave. ### How Did...

Does pinpoint agent support virtual thread?

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In 3.0.x pinpoint agent support jdk21。Does agent support virtual threads? Thanks!

Slave's accessMessageInMemoryMaxRatio should be calculated dynamically

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### Which Issue(s) This PR Fixes Fixes #9275 ### Brief Description ### How Did You Test This Change?

Messages sent through a proxy using remoting protocol should set the property of born host

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…ead of the proxy's ### Which Issue(s) This PR Fixes Fixes #9273 ### Brief Description Messages sent through a proxy using remoting protocol should set the property of client born...

[Bug] The slave's accessMessageInMemoryMaxRatio should be calculated dynamically

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### Before Creating the Bug Report - [x] I found a bug, not just asking a question, which should be created in [GitHub Discussions](https://github.com/apache/rocketmq/discussions). - [x] I have searched the...

### Before Creating the Enhancement Request - [x] I have confirmed that this should be classified as an enhancement rather than a bug/feature. ### Summary Messages sent through a proxy...

The issue tracker is **ONLY** used for the go client (feature request of RocketMQ need to follow [RIP process](https://github.com/apache/rocketmq/wiki/RocketMQ-Improvement-Proposal)). Keep in mind, please check whether there is an existing same...