[ROCKETMQ-203] Support client to allocate message queue in machine room nearby priority

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Von Gosling
• Reporter: Jaskey Lam
• Created: 24/May/17 09:19
• Updated: 06/Jun/17 03:01

Description

As the picture shows, in multi-machine room acrtiture , the consumer may be deployed in different IDC and so do the broker.

But the user may possiblly need to consumer message from its own IDC since it is near and faster. But when problem occurs say all consumers in one IDC is crashed, the messages can also be consumed by other consumers in other IDC.

This is a very important feature for many users, but currently, if the user needs this feature, they must implement their own allocate strategy which is not easy and error prone.

And, this feature should be be conflict to the existing allocate strategy that means the user can still choose their better allocate strategy say AVERAGE or AVERAGE_BY_CIRCLE, but nearby machine room will be supported easily too.

Issue Links

• links to: GitHub Pull Request #109