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https://issues.apache.org/jira/browse/FLINK-4354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15643637#comment-15643637
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Zhijiang Wang commented on FLINK-4354:
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Hi [~till.rohrmann], for heartbeat interaction between TM and RM, I have some
issues need to be confirmed with you before implementation.
1. The current HeartbeatManagerImpl implements both HeartbeatManager and
HeartbeatTarget interfaces in order to test easily. I think we need another
HeartbeatManagerImpl that just implements HeartbeatManager interface so can be
used directly in different components. And every component can implement the
separate HeartbeatTarget.
2. For TM component, the HeartbeatManagerImpl can be constructed in
TaskManagerRunner (maybe not put in TaskManagerServices) and passed into
TaskExecutor.
3. The TM will create the HeartbeatListener and start the HeartbeatManagerImpl.
4. When RM leader changes, the TM registers the new RM. If the registration
successes, TaskExecutorRegistrationSuccess should contain ResourceID of RM, so
the TM can create the HeartbeatTarget and monitor it based on ResourceID and
Gateway of RM.
5. For RM, when receive registration from TM, it will create the
HeartbeatTarget and monitor it based on ResourceID and Gateway of TM.
RM will schedule a heartbeat request to all the monitored TMs.
6. TaskExecutorGateway should define the requestHeartbeat RPC method, and
ResourceManagerGateway should define the sendHeartbeat RPC method.
Do you think the above processes are feasible? I wish your professional
advices and them begin to implement this week.
> Implement TaskManager side of heartbeat from ResourceManager
> -------------------------------------------------------------
>
> Key: FLINK-4354
> URL: https://issues.apache.org/jira/browse/FLINK-4354
> Project: Flink
> Issue Type: Sub-task
> Components: Cluster Management
> Reporter: Zhijiang Wang
> Assignee: Zhijiang Wang
>
> The {{ResourceManager}} initiates heartbeat messages via the {{RmLeaderID}}.
> The {{TaskManager}} transmits its slot availability with each heartbeat. That
> way, the RM will always know about available slots.
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