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From "Mithun Radhakrishnan (JIRA)" <>
Subject [jira] [Assigned] (HIVE-17609) Tool to manipulate delegation tokens
Date Tue, 26 Sep 2017 20:25:00 GMT


Mithun Radhakrishnan reassigned HIVE-17609:

> Tool to manipulate delegation tokens
> ------------------------------------
>                 Key: HIVE-17609
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: Metastore, Security
>    Affects Versions: 2.2.0, 3.0.0
>            Reporter: Mithun Radhakrishnan
>            Assignee: Mithun Radhakrishnan
> This was precipitated by OOZIE-2797. We had a case in production where the number of
active metastore delegation tokens outstripped the ZooKeeper {{jute.maxBuffer}} size. Delegation
tokens could neither be fetched, nor be cancelled. 
> The root-cause turned out to be a miscommunication, causing delegation tokens fetched
by Oozie *not* to be cancelled automatically from HCat. This was sorted out as part of OOZIE-2797.
> The issue exposed how poor the log-messages were, in the code pertaining to token fetch/cancellation.
We also found need for a tool to query/list/purge delegation tokens that might have expired
already. This patch introduces such a tool, and improves the log-messages.

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