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From "Xuefu Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-12777) Add capability to restore session
Date Thu, 21 Jan 2016 17:46:39 GMT

    [ https://issues.apache.org/jira/browse/HIVE-12777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15110981#comment-15110981
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Xuefu Zhang commented on HIVE-12777:
------------------------------------

Could we have description of what the feature is please? I don't understand what we are trying
to achieve here. Are we trying to restore a session that's lost? How does it get lost? Where
do we restore it from? What are the use cases? How does this benefits Hive users?

> Add capability to restore session
> ---------------------------------
>
>                 Key: HIVE-12777
>                 URL: https://issues.apache.org/jira/browse/HIVE-12777
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Rajat Khandelwal
>            Assignee: Rajat Khandelwal
>         Attachments: HIVE-12777.04.patch, HIVE-12777.08.patch, HIVE-12777.09.patch, HIVE-12777.11.patch,
HIVE-12777.12.patch, HIVE-12777.13.patch, HIVE-12777.15.patch, HIVE-12777.16.patch, HIVE-12777.17.patch
>
>
> Extensions using Hive session handles should be able to restore the hive session from
the handle. 
> Apache Lens depends on a fork of hive and that fork has such a capability. 
> Relevant commit: https://github.com/InMobi/hive/commit/931fe9116161a18952c082c14223ad6745fefe00#diff-0acb35f7cab7492f522b0c40ce3ce1be
> Functionality added: Restoring a session. A session opened once is lost once the cli
service is restarted. There may be some operation going on in that session at the time the
service is restarted. It's useful to be able to restore a previously existing session. 
> Have added code in CLIService for that effect. Have also added a test class. 



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