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From Edward Capriolo <edlinuxg...@gmail.com>
Subject Re: Hive and ODBC driver- single threaded?
Date Fri, 25 Jun 2010 14:39:26 GMT
On Fri, Jun 25, 2010 at 10:33 AM, Amogh Vasekar <amogh@yahoo-inc.com> wrote:
> Hi,
> Incidentally was looking into a similar thing. The Hive server is not
> threadsafe,
>
> https://issues.apache.org/jira/browse/HIVE-187?focusedCommentId=12738494&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#action_12738494
>
>  for more.
>
> Amogh
>
>
> On 6/25/10 7:16 PM, "Omer, Farah" <fomer@microstrategy.com> wrote:
>
> Hi all,
>
> I am having a question about Hive and the Hive ODBC driver (with latest
> patch HIVE-1101 applied). I was wondering if anybody can tell me if the ODBC
> driver is single-threaded or if Hive itself is single-threaded?  The ODBC
> driver probably is, but I am wondering about Hive itself. I.e. can we submit
> and run two jobs concurrently?
>
> Any response much appreciated. Thanks.
>
> Farah Omer
> Senior DB Engineer, MicroStrategy, Inc.
>
> T: 703 2702230
> E: fomer@microstrategy.com <mailto:fomer@microstrategy.com>
> http://www.microstrategy.com <http://www.microstrategy.com>
>
>
>
>
>

Hadoop & Hive have some static thread local variables that propagate
those issues do the Web Interface Hive Server, JDBC. The simple (yet
annoying) solution is to spawn off multiple HiveServers.

Edward

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