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Posted to issues@hawq.apache.org by "Lei Chang (JIRA)" <ji...@apache.org> on 2015/11/21 04:08:11 UTC

[jira] [Reopened] (HAWQ-68) Wrong answer when converting hash to random partition table

     [ https://issues.apache.org/jira/browse/HAWQ-68?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lei Chang reopened HAWQ-68:
---------------------------

> Wrong answer when converting hash to random partition table
> -----------------------------------------------------------
>
>                 Key: HAWQ-68
>                 URL: https://issues.apache.org/jira/browse/HAWQ-68
>             Project: Apache HAWQ
>          Issue Type: Bug
>          Components: Core
>            Reporter: Hubert Zhang
>            Assignee: Hubert Zhang
>             Fix For: 2.0.0-beta-incubating
>
>
> for hash partition table, if datalocality is below a threshold, it will be treated as random. For now, some partition's datalocality are high, some are not, which leads to some partitions are converted to random, some are not. But optimizer must treat the whole partition table with the same distribution type. So we determine the distribution type of partition table by its first partition. 



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