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https://issues.apache.org/jira/browse/HDFS-7295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14185152#comment-14185152
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Anubhav Dhoot commented on HDFS-7295:
-------------------------------------
Referring to the detailed conversation at
[YARN-941|https://issues.apache.org/jira/browse/YARN-941], alternate solutions
such as token replacement do not offer protection to attacks that can steal
tokens.
> Support arbitrary max expiration times for delegation token
> -----------------------------------------------------------
>
> Key: HDFS-7295
> URL: https://issues.apache.org/jira/browse/HDFS-7295
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Anubhav Dhoot
>
> Currently the max lifetime of HDFS delegation tokens is hardcoded to 7 days.
> This is a problem for different users of HDFS such as long running YARN apps.
> Users should be allowed to optionally specify max lifetime for their tokens.
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