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https://issues.apache.org/jira/browse/YARN-7605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16333363#comment-16333363
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Jian He commented on YARN-7605:
-------------------------------
I combined this and YARN-7540 and rebased this on latest trunk and made some
edits to the documentation
> Implement doAs for Api Service REST API
> ---------------------------------------
>
> Key: YARN-7605
> URL: https://issues.apache.org/jira/browse/YARN-7605
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Eric Yang
> Assignee: Eric Yang
> Priority: Major
> Fix For: yarn-native-services
>
> Attachments: YARN-7605.001.patch, YARN-7605.004.patch,
> YARN-7605.005.patch, YARN-7605.006.patch, YARN-7605.007.patch,
> YARN-7605.008.patch, YARN-7605.009.patch, YARN-7605.010.patch,
> YARN-7605.011.patch, YARN-7605.012.patch, YARN-7605.013.patch,
> YARN-7605.014.patch, YARN-7605.015.patch, YARN-7605.016.patch,
> YARN-7605.017.patch, YARN-7605.018.patch
>
>
> In YARN-7540, all client entry points for API service is centralized to use
> REST API instead of having direct file system and resource manager rpc calls.
> This change helped to centralize yarn metadata to be owned by yarn user
> instead of crawling through every user's home directory to find metadata.
> The next step is to make sure "doAs" calls work properly for API Service.
> The metadata is stored by YARN user, but the actual workload still need to be
> performed as end users, hence API service must authenticate end user kerberos
> credential, and perform doAs call when requesting containers via
> ServiceClient.
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