Even if it is single threaded it certainly seems to support multiple 
connections. 

We run 5 workers all connected at the same time executing a different query 
each ( with a different connection per worker).

Hope that helps

Matthew 
On Tuesday, May 3, 2011 at 1:40 PM, V.Senthil Kumar wrote:
Thanks Matthew. The wiki page http://wiki.apache.org/hadoop/Hive/HiveServer 
says 
> its single threaded. I have a queue of queries which gets added dynamically 
> all 
> the time. By the time I run 1 query using 1 JDBC connection, the queue gets 
> added more queries and builds up a backlog. So, I was that's why I was 
> wondering 
> whether I can run two or more instances to avoid having a big backlog in 
> queue.
> 
> 
> 
> ----- Original Message ----
> From: Matthew Rathbone <matt...@foursquare.com>
> To: user@hive.apache.org
> Sent: Tue, May 3, 2011 7:46:49 AM
> Subject: Re: HIVE Server multiple instances
> 
> Why would you want to run two? I think it is multithreaded, so you can query 
> it 
> from two different connections
> 
> -- 
> Matthew Rathbone
> Foursquare | Software Engineer | Server Engineering Team
> matt...@foursquare.com | @rathboma | 4sq
> 
> On Monday, May 2, 2011 at 6:41 PM, V.Senthil Kumar wrote:
> Hello, 
> > 
> > I have one instance of HIVE JDBC server running on port 10000. Can I run 
> > another 
> > 
> > instance on different port ? Would it cause a concurrency issue on the 
> > underlying data warehouse files ? Please clarify.
> > 
> > Thanks,
> > V.Senthil Kumar
> 

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