hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Deepak Jaiswal (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-18910) Migrate to Murmur hash for shuffle and bucketing
Date Thu, 08 Mar 2018 21:07:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-18910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Deepak Jaiswal updated HIVE-18910:
----------------------------------
    Status: Patch Available  (was: In Progress)

> Migrate to Murmur hash for shuffle and bucketing
> ------------------------------------------------
>
>                 Key: HIVE-18910
>                 URL: https://issues.apache.org/jira/browse/HIVE-18910
>             Project: Hive
>          Issue Type: Task
>            Reporter: Deepak Jaiswal
>            Assignee: Deepak Jaiswal
>            Priority: Major
>
> Hive uses JAVA hash which is not as good as murmur for better distribution and efficiency
in bucketing a table.
> Migrate to murmur hash but still keep backward compatibility for existing users so that
they dont have to reload the existing tables.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Mime
View raw message