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https://issues.apache.org/jira/browse/HADOOP-7829?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13152235#comment-13152235
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Thomas Weise commented on HADOOP-7829:
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We need the ability for the generating process (server) to store the delegation
tokens into a shared store (ZK, RDBMS etc.) so they can be accessed by all
servers behind the VIP. For that, we need to abstract out the token storage
part, which is currently in-memory (hashmap in
AbstractDelegationTokenSecretManager). Please see details in associated
HIVE-2467.
We require the hook for customization in Hadoop, but not necessarily token
store implementations other than the default in-memory implementation.
I'm planning to provide a patch for this after the work for .20 in the Hive
shim is complete.
> 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: 0.23.0
> 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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