You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@hawq.apache.org by "Lirong Jian (JIRA)" <ji...@apache.org> on 2016/08/11 13:49:20 UTC
[jira] [Commented] (HAWQ-999) Treat hash table as random when file
count is not in proportion to bucket number of table.
[ https://issues.apache.org/jira/browse/HAWQ-999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15417271#comment-15417271 ]
Lirong Jian commented on HAWQ-999:
----------------------------------
Would you please explain a little bit under what kind of circumstance this mismatch would occur?
Lirong
> Treat hash table as random when file count is not in proportion to bucket number of table.
> ------------------------------------------------------------------------------------------
>
> Key: HAWQ-999
> URL: https://issues.apache.org/jira/browse/HAWQ-999
> Project: Apache HAWQ
> Issue Type: Improvement
> Components: Core
> Reporter: Hubert Zhang
> Assignee: Hubert Zhang
>
> By definition, file count of a hash table should be equal to or a multiple of the bucket number of the table. So if mismatch happens, we should not treat it as hash table in data locality algorithm.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
Re: [jira] [Commented] (HAWQ-999) Treat hash table as random when
file count is not in proportion to bucket number of table.
Posted by Jane Beckman <jb...@pivotal.io>.
Sounds like this should be noted in the documentation?
On Thu, Aug 11, 2016 at 6:49 AM, Lirong Jian (JIRA) <ji...@apache.org> wrote:
>
> [ https://issues.apache.org/jira/browse/HAWQ-999?page=com.
> atlassian.jira.plugin.system.issuetabpanels:comment-
> tabpanel&focusedCommentId=15417271#comment-15417271 ]
>
> Lirong Jian commented on HAWQ-999:
> ----------------------------------
>
> Would you please explain a little bit under what kind of circumstance this
> mismatch would occur?
>
> Lirong
>
> > Treat hash table as random when file count is not in proportion to
> bucket number of table.
> > ------------------------------------------------------------
> ------------------------------
> >
> > Key: HAWQ-999
> > URL: https://issues.apache.org/jira/browse/HAWQ-999
> > Project: Apache HAWQ
> > Issue Type: Improvement
> > Components: Core
> > Reporter: Hubert Zhang
> > Assignee: Hubert Zhang
> >
> > By definition, file count of a hash table should be equal to or a
> multiple of the bucket number of the table. So if mismatch happens, we
> should not treat it as hash table in data locality algorithm.
>
>
>
> --
> This message was sent by Atlassian JIRA
> (v6.3.4#6332)
>