dubbo-2.6.11

Change Lists

• Add serialize id check for 2.6 (#7912)
• [dubbo2.6] cherry up #7815 to dubbo2.6 (#7992)
• Dubbo 2.6.x may not support multi group consumer (#7997)
• Service annotation #parameters on issue#3072 (#8002)
• Remove needless toString convert (#8093)
• Backport 2.7, lazy connection warn log (#8329)
• backport hessian protocol change from 2.7 (#8432)
• Dubbo ProviderConsumerRegTable class cause outOfMemory while no provider available exception occurs (#8522)
• fix issue-8516 on 2.6.x (#8623)
• [2.6] update hessian lite version (#8781)