[jira] [Created] (YARN-4602) Message/notification service between containers

["Junping Du (JIRA)" <ji...@apache.org>]

Junping Du created YARN-4602:
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             Summary: Message/notification service between containers
                 Key: YARN-4602
                 URL: https://issues.apache.org/jira/browse/YARN-4602
             Project: Hadoop YARN
          Issue Type: Sub-task
            Reporter: Junping Du
            Assignee: Junping Du


Currently, mostly communications among YARN daemons, services and applications are go through RPC. In almost all cases, logic running inside of containers are RPC client but not server because it get launched inflight. The only special case is AM container, because it get launched earlier than any other containers so it can be RPC server and tell new coming containers server address in application logic (like MR AM). 
The side effects are: 
1. When AM container get failed, the new AM attempts will get launched with new address/port, so previous RPC are broken.
2. Application's requirement are variable, there could be other dependency between containers (not AM), so some container failed over will affect other containers' running logic.
It is better to have some message/notification mechanism between containers for handle above cases.




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