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https://issues.apache.org/jira/browse/YARN-6903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16106822#comment-16106822
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Jian He commented on YARN-6903:
-------------------------------
Upload a patch with some initial offline reviews from [~billie.rinaldi]. thanks
[~billie.rinaldi] !
All the new code are put into a new package called
"org.apache.hadoop.yarn.service", below are the main classes:
1. *ServiceMaster* - The usual AppMaster to start all the services
2. *ServiceClient* - The client to interact with ServiceMaster
3. *ServiceCLI*- the CLI for interacting with yarn-native-services.
4. *ServiceScheduler* - A CompositeService that mostly implements the
AMRMClient and NMClient listener
5. *Component*- manages a component’s lifecycle
6. *ComponentInstance* - manages a component instances’s lifecycle
7. *ClientAMService* - serves client requests such as flex components and get
status
8. *ServiceMonitor* - Does readiness checks and dependency start order
triggering.
9.*ContainerFailureTracker* - tracks the node failures and does blacklist
accordingly
10. *TestYarnNativeServices* - a fully end-to-end UT using MiniYarnCluster and
an in-jvm ZK
> Yarn-native-service framework core rewrite
> ------------------------------------------
>
> Key: YARN-6903
> URL: https://issues.apache.org/jira/browse/YARN-6903
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Jian He
> Assignee: Jian He
> Attachments: YARN-6903.yarn-native-service.01.patch
>
>
> There are some new features like rich placement scheduling, container auto
> restart, container upgrade in YARN core that can be taken advantage by the
> native-service framework. Besides, there are quite a lot legacy code which
> are no longer required.
> So we decide to rewrite the core part to have a leaner codebase and make use
> of various advanced features in YARN.
> And the new code design will be in align with what we have designed for the
> service API YARN-4793
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