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Posted to issues@kylin.apache.org by "liyang (JIRA)" <ji...@apache.org> on 2016/05/22 02:17:12 UTC

[jira] [Reopened] (KYLIN-1698) Allow bigint(long) as a date partition column

     [ https://issues.apache.org/jira/browse/KYLIN-1698?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

liyang reopened KYLIN-1698:
---------------------------
      Assignee:     (was: hongbin ma)

from 耳东 775620671@qq.com

> In my opinion, kylin can change the  yyyy-MM-dd and yyyyMMdd to millis. and the cardinality is equal to the cardinality of   'yyyyMMdd'  or  yyyy-MM-dd.

To me, it makes sense. The data format is a separate thing as to cardinality. By rounding millis to hours to days, the column can still be low in cardinality. I'm re-opening the JIRA-1698.

> Allow bigint(long) as a date partition column
> ---------------------------------------------
>
>                 Key: KYLIN-1698
>                 URL: https://issues.apache.org/jira/browse/KYLIN-1698
>             Project: Kylin
>          Issue Type: Improvement
>    Affects Versions: v1.5.1
>            Reporter: guohuili
>
> In many cases, hive tables may use long / bigint as date column. Currently Kylin only support 'yyyy-MM-dd' or 'yyyyMMdd' as date format. This jira is to support long / bigint format.



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