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https://issues.apache.org/jira/browse/HADOOP-7829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13152569#comment-13152569
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Thomas Weise commented on HADOOP-7829:
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@Owen: Could you please comment on how this need to persist tokens (or rather
to share them between multiple metastore service nodes) relates to potentially
similar use cases for other services? The NN is also keeping tokens in memory,
but those don't survive a restart? Would also appreciate if you could have a
look at the TokenStore interface in the proposed Hive patch. As far as the
implementation of that interface goes, we are planning to use ZooKeeper 3.4
with security for our production deployment.
> Delegation token manager should support token store abstraction
> ---------------------------------------------------------------
>
> Key: HADOOP-7829
> URL: https://issues.apache.org/jira/browse/HADOOP-7829
> Project: Hadoop Common
> Issue Type: Improvement
> Components: security
> Affects Versions: 0.20.205.0, 0.23.0
> Reporter: Thomas Weise
>
> There are several issues with the interfaces in .20 that make it difficult to
> incorporate this as extension currently (see HIVE-2467). The plan is to port
> relevant changes to Hadoop so that future versions of the shim in Hive (or
> projects with similar needs) are easier to implement.
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