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Posted to issues@hawq.apache.org by "Lei Chang (JIRA)" <ji...@apache.org> on 2015/11/21 04:12:11 UTC

[jira] [Closed] (HAWQ-76) add guc to determine whether to convert hash table to random with enforcement

     [ https://issues.apache.org/jira/browse/HAWQ-76?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lei Chang closed HAWQ-76.
-------------------------
    Resolution: Fixed

> add guc to determine whether to convert hash table to random with enforcement
> -----------------------------------------------------------------------------
>
>                 Key: HAWQ-76
>                 URL: https://issues.apache.org/jira/browse/HAWQ-76
>             Project: Apache HAWQ
>          Issue Type: New Feature
>          Components: Core
>            Reporter: Hubert Zhang
>            Assignee: Hubert Zhang
>             Fix For: 2.0.0-beta-incubating
>
>
> add guc enforce_hash_to_random to determine whether to convert hash table  to random table. 
> enforce_hash_to_random=0: converting when datalocality is low  
> enforce_hash_to_random=1: enforce hash 
> enforce_hash_to_random=2: enforce random



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