[jira] [Commented] (HIVE-3255) Add DBTokenStore to store Delegation Tokens in DB

["Ashutosh Chauhan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-3255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13413327#comment-13413327 ] 

Ashutosh Chauhan commented on HIVE-3255:
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A WIP patch is available for review on https://reviews.facebook.net/D4113 in case some one wants to provide a feedback on design. Some function bodies are not done yet, but those are mostly self contained and shouldn't hinder in design review.
                
> Add DBTokenStore to store Delegation Tokens in DB
> -------------------------------------------------
>
>                 Key: HIVE-3255
>                 URL: https://issues.apache.org/jira/browse/HIVE-3255
>             Project: Hive
>          Issue Type: New Feature
>          Components: Metastore, Security
>    Affects Versions: 0.9.0, 0.10.0
>            Reporter: Ashutosh Chauhan
>            Assignee: Ashutosh Chauhan
>
> Before HIVE-1696 metastore was completely stateless and all the data is in backend db. HIVE-1696 added delegation tokens for metastore which metastore needs to keep in memory. HIVE-2467 added support for storing delegation tokens in ZooKeeper via an interface {{DelegationTokenStore}}. This jira is about using DB backend for storing tokens which metastore uses for storing data. 

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