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https://issues.apache.org/jira/browse/HIVE-1696?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Devaraj Das updated HIVE-1696:
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    Attachment: hive-1696-3-with-gen-code.patch

Patch with the generated code..

> Add delegation token support to metastore
> -----------------------------------------
>
>                 Key: HIVE-1696
>                 URL: https://issues.apache.org/jira/browse/HIVE-1696
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Metastore, Security, Server Infrastructure
>            Reporter: Todd Lipcon
>             Fix For: 0.7.0
>
>         Attachments: hive-1696-1-with-gen-code.patch, hive-1696-1.patch, 
> hive-1696-3-with-gen-code.patch, hive-1696-3.patch, hive_1696.patch, 
> hive_1696.patch, hive_1696_no-thrift.patch
>
>
> As discussed in HIVE-842, kerberos authentication is only sufficient for 
> authentication of a hive user client to the metastore. There are other cases 
> where thrift calls need to be authenticated when the caller is running in an 
> environment without kerberos credentials. For example, an MR task running as 
> part of a hive job may want to report statistics to the metastore, or a job 
> may be running within the context of Oozie or Hive Server.
> This JIRA is to implement support of delegation tokens for the metastore. The 
> concept of a delegation token is borrowed from the Hadoop security design - 
> the quick summary is that a kerberos-authenticated client may retrieve a 
> binary token from the server. This token can then be passed to other clients 
> which can use it to achieve authentication as the original user in lieu of a 
> kerberos ticket.

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