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https://issues.apache.org/jira/browse/YARN-6626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16181755#comment-16181755
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Gour Saha commented on YARN-6626:
---------------------------------
bq. Added ability to load ApiServer to RM as a web filter using reflection.
This is done to avoid Maven cyclic dependency on hadoop-yarn-services-api
module.
[~eyang], is there any annotation support in Yarn (similar to Spring framework)
which can be applied to the ApiServer class and then at runtime RM scans for
all classes (from a specified list of packages) for such annotations and loads
them appropriately? If not, we should at least add a comment as to why we are
doing the reflection (to avoid compile-time cyclic dependency, etc.) so that if
such an annotation framework is created later, it can be incorporated for
ApiServer.
> Embed REST API service into RM
> ------------------------------
>
> Key: YARN-6626
> URL: https://issues.apache.org/jira/browse/YARN-6626
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Gour Saha
> Assignee: Eric Yang
> Fix For: yarn-native-services
>
> Attachments: YARN-6626.yarn-native-services.001.patch,
> YARN-6626.yarn-native-services.002.patch,
> YARN-6626.yarn-native-services.003.patch,
> YARN-6626.yarn-native-services.004.patch,
> YARN-6626.yarn-native-services.005.patch,
> YARN-6626.yarn-native-services.006.patch,
> YARN-6626.yarn-native-services.007.patch,
> YARN-6626.yarn-native-services.008.patch
>
>
> As of now the deployment model of the Native Services REST API service is
> standalone. There are several cross-cutting solutions that can be inherited
> for free (kerberos, HA, ACLs, trusted proxy support, etc.) by the REST API
> service if it is embedded into the RM process. In fact we can expose the REST
> API via the same port as RM UI (8088 default). The URI path
> /services/v1/applications will distinguish the REST API calls from other RM
> APIs.
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