hadoop-hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Ning Zhang <nzh...@facebook.com>
Subject Re: Is anybody working on the globally "order by" of hive ?
Date Fri, 11 Jun 2010 19:40:16 GMT
Good idea Edward. It would definitely better if it is what it sounds to be.

Btw Jeff, order by is supported in trunk with certain limititions in strict mode (has to have
a limit). I will be able to update the wiki when I come back.

Sent from my blackberry

From: Edward Capriolo <edlinuxguru@gmail.com>
To: hive-user@hadoop.apache.org <hive-user@hadoop.apache.org>
Cc: hive-dev@hadoop.apache.org <hive-dev@hadoop.apache.org>
Sent: Fri Jun 11 11:13:57 2010
Subject: Re: Is anybody working on the globally "order by" of hive ?

On Fri, Jun 11, 2010 at 5:24 AM, Jeff Zhang <zjffdu@gmail.com<mailto:zjffdu@gmail.com>>
Hi all,

From the wiki of hive, Hive do not have the feature of globally "order
by", the sort by of hive is for each reducer. Our team think the
globally "order by" is an important feature for users, so wondering is
anybody working it ? I am very interested to been involved.

Best Regards

Jeff Zhang


I was wondering if TotalOrderPartitioner in hadoop 20 could play a role in this. As of now
order by sets reduce tasks to 1 :)

  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message