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https://issues.apache.org/jira/browse/YARN-7605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16319275#comment-16319275
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Eric Yang commented on YARN-7605:
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[~jianhe] Life time remaining calculated from RM doesn't appear to be real
time. When 3600 is set during application launching, the value seems to stay
constant. When retrieving it via ApplicationTimeout, and the service is
already stopped, the value does not change. Hence, retrieving the value from
RM and merge with the service object doesn't compute the time more accurately.
AM copy of service object contains the same initial life time value because
service object from AM contains the initial life time value set during service
creation. While I am not an expert in ApplicationTimeout code, but I haven't
found the time ever changed from it's original value. I will put the code back
in the next patch in case this was result of bug in ApplicationTimeout code.
Back to the comment about getStatus structure, do you still want the returned
value of stopped service to be partial information, or similar to running
application?
> 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
> 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
>
>
> 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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