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From "Namit Jain (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-789) Add get_unique_id() call to metastore
Date Thu, 17 Dec 2009 23:52:18 GMT

     [ https://issues.apache.org/jira/browse/HIVE-789?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Namit Jain updated HIVE-789:
----------------------------

    Fix Version/s:     (was: 0.5.0)

> Add get_unique_id() call to metastore
> -------------------------------------
>
>                 Key: HIVE-789
>                 URL: https://issues.apache.org/jira/browse/HIVE-789
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Metastore
>            Reporter: Todd Lipcon
>         Attachments: hive-789.patch
>
>
> As noted in HIVE-718, it can be tough to avoid race conditions when multiple clients
are trying to move files into the same directory. This patch adds a get_unique_id() call to
the metastore that returns the current value from an incrementing JDO Sequence so that clients
can avoid some races without locks.

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