Multiple Hive queries at once

[jo...@accenture.com]

Hi everyone,
I couldn't find this information anywhere.  I would like to confirm that Hive query cannot be concurrent.  Is it true that you can only run one hive query on a hive server at any one given time?

Thanks
Jon

This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information.  If you have received it in error, please notify the sender immediately and delete the original.  Any other use of the email by you is prohibited.

RE: Multiple Hive queries at once

[Steven Wong <sw...@netflix.com>]

There are jiras saying that Hive Server has issues with concurrent queries, such as HIVE-80 and HIVE-1019. (Hive Server, not Hive CLI.) I don't use Hive Server heavily, so I cannot confirm or deny.


From: jonathan.hwang@accenture.com [mailto:jonathan.hwang@accenture.com]
Sent: Wednesday, May 25, 2011 2:23 PM
To: user@hive.apache.org
Subject: RE: Multiple Hive queries at once

Yes, it does.  Thanks!  Just dirty reads then, is it true 0.70 version of Hive supports concurrency now?

http://www.pcworld.idg.com.au/article/381620/hadoop_hive_gets_production_polish/


From: Alex Kozlov [mailto:alexvk@cloudera.com]
Sent: Wednesday, May 25, 2011 2:14 PM
To: user@hive.apache.org
Subject: Re: Multiple Hive queries at once

Hive queries can be concurrent, however there is no specific locking mechanism to avoid concurrent modifications to either metadata or the data files.

Hope this answers your question.


On Wed, May 25, 2011 at 2:06 PM, <jo...@accenture.com>> wrote:
Hi everyone,
I couldn't find this information anywhere.  I would like to confirm that Hive query cannot be concurrent.  Is it true that you can only run one hive query on a hive server at any one given time?

Thanks
Jon

This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information.  If you have received it in error, please notify the sender immediately and delete the original.  Any other use of the email by you is prohibited.

RE: Multiple Hive queries at once

[jo...@accenture.com]

Yes, it does.  Thanks!  Just dirty reads then, is it true 0.70 version of Hive supports concurrency now?

http://www.pcworld.idg.com.au/article/381620/hadoop_hive_gets_production_polish/


From: Alex Kozlov [mailto:alexvk@cloudera.com]
Sent: Wednesday, May 25, 2011 2:14 PM
To: user@hive.apache.org
Subject: Re: Multiple Hive queries at once

Hive queries can be concurrent, however there is no specific locking mechanism to avoid concurrent modifications to either metadata or the data files.

Hope this answers your question.


On Wed, May 25, 2011 at 2:06 PM, <jo...@accenture.com>> wrote:
Hi everyone,
I couldn't find this information anywhere.  I would like to confirm that Hive query cannot be concurrent.  Is it true that you can only run one hive query on a hive server at any one given time?

Thanks
Jon

This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information.  If you have received it in error, please notify the sender immediately and delete the original.  Any other use of the email by you is prohibited.

Re: Multiple Hive queries at once

[Alex Kozlov <al...@cloudera.com>]

Hive queries can be concurrent, however there is no specific locking
mechanism to avoid concurrent modifications to either metadata or the data
files.

Hope this answers your question.


On Wed, May 25, 2011 at 2:06 PM, <jo...@accenture.com> wrote:

> Hi everyone,
> I couldn't find this information anywhere.  I would like to confirm that
> Hive query cannot be concurrent.  Is it true that you can only run one hive
> query on a hive server at any one given time?
>
> Thanks
> Jon
>
> This message is for the designated recipient only and may contain
> privileged, proprietary, or otherwise private information.  If you have
> received it in error, please notify the sender immediately and delete the
> original.  Any other use of the email by you is prohibited.
>