zhangjing created FLINK-4535:
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Summary: ResourceManager process registration from TaskExecutor
Key: FLINK-4535
URL:
https://issues.apache.org/jira/browse/FLINK-4535 Project: Flink
Issue Type: Sub-task
Components: Cluster Management
Reporter: zhangjing
Assignee: zhangjing
When TaskExecutor register at ResourceManager, it will have the following 3 input parameter
1. resourceManagerLeaderId: the fencing token for the ResourceManager leader which is kept by taskExecutor who send the registration
2. taskExecutorAddress: the address of taskExecutor
3. resourceID: The resource ID of the TaskExecutor that registers
ResourceManager need to process the event based on the following step:
1. check whether input resourceManagerLeaderId is as same as the current leadershipSessionId. If not, it means that maybe two or more resourceManager exists at the same time, and current resourceManager is not the proper rm. so it rejects or ignores the registration
2. check whether exists a valid taskExecutor at the giving address by connecting to the address. Reject the registration from invalid address.
3. check whether it is a duplicate registration by input resourceId, reject the registration
4. keep resourceID and taskExecutorGateway mapping relationships, And Optionally keep resourceID and container mapping relationships in yarn mode.
5. Create the connection between resourceManager and taskExecutor, and ensure its healthy based on heartbeat rpc calls between rm and tm.
6. send registration successful ack to the taskExecutor.
Discussion:
Maybe we need import errorCode or several registration decline subclass to distinguish the different causes of decline registration.
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