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From Jane Beckman <jbeck...@pivotal.io>
Subject Re: [jira] [Commented] (HAWQ-999) Treat hash table as random when file count is not in proportion to bucket number of table.
Date Thu, 11 Aug 2016 16:28:05 GMT
Sounds like this should be noted in the documentation?

On Thu, Aug 11, 2016 at 6:49 AM, Lirong Jian (JIRA) <jira@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.
>
>
>
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