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From "Peter Vary (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-14979) Removing stale Zookeeper locks at HiveServer2 initialization
Date Mon, 17 Oct 2016 08:37:58 GMT

     [ https://issues.apache.org/jira/browse/HIVE-14979?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Peter Vary updated HIVE-14979:
------------------------------
    Status: Patch Available  (was: Open)

> Removing stale Zookeeper locks at HiveServer2 initialization
> ------------------------------------------------------------
>
>                 Key: HIVE-14979
>                 URL: https://issues.apache.org/jira/browse/HIVE-14979
>             Project: Hive
>          Issue Type: Improvement
>          Components: Locking
>            Reporter: Peter Vary
>            Assignee: Peter Vary
>         Attachments: HIVE-14979.patch
>
>
> HiveServer2 could use Zookeeper to store token that indicate that particular tables are
locked with the creation of persistent Zookeeper objects. 
> A problem can occur when a HiveServer2 instance creates a lock on a table and the HiveServer2
instances crashes ("Out of Memory" for example) and the locks are not released in Zookeeper.
This lock will then remain until it is manually cleared by an admin.
> There should be a way to remove stale locks at HiveServer2 initialization, helping the
admins life.



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