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https://issues.apache.org/jira/browse/YARN-5175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15361936#comment-15361936
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Xianyin Xin commented on YARN-5175:
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Hi [~jianhe], what's the progress on this? Is there any design or thought?
> Simplify the delegation token renewal management for YARN localization and
> log-aggregation
> ------------------------------------------------------------------------------------------
>
> Key: YARN-5175
> URL: https://issues.apache.org/jira/browse/YARN-5175
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Jian He
>
> Increasingly, this DelegationTokenRenewer class for renewing expiring token
> for localization and log-aggregation is getting complicated. We could have
> done it at a per-user level. copying comments from vinod in YARN-5098:
> bq. Overall, I think we can simplify this code if we simply always manage our
> own tokens for localization and log-aggregation for long-running applications
> / services. Today, it's too complicated: for the first day, we use the user's
> token T, second day we get a new token T' but share it for all the apps
> originally sharing T, after RM restart we use a new token T'' which is
> different for each of the apps originally sharing T. We can simplify this by
> always managing it ourselves and managing them per-user!
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