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Date: Thu, 30 May 2013 00:58:20 +0000 (UTC)
From: "Shreepadma Venugopalan (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Message-ID: <JIRA.12650029.1369865067929.39038.1369875500105@arcas>
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Subject: [jira] [Work started] (HIVE-4628) HS2 sessionmanager should
 synchronize the call to insert/remove session objects from session hash map
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     [ https://issues.apache.org/jira/browse/HIVE-4628?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on HIVE-4628 started by Shreepadma Venugopalan.

> HS2 sessionmanager should synchronize the call to insert/remove session objects from session hash map
> -----------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-4628
>                 URL: https://issues.apache.org/jira/browse/HIVE-4628
>             Project: Hive
>          Issue Type: Bug
>          Components: HiveServer2
>    Affects Versions: 0.11.0
>            Reporter: Shreepadma Venugopalan
>            Assignee: Shreepadma Venugopalan
>            Priority: Critical
>
> HS2 SessionManager maintains a hashmap of active HS2 sessions. However, insert and deletes to this hashmap is not synchronized. A consequence of this is a racing thread could overwrite a valid session object in the hashmap and we could end up losing a session!

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