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Posted to issues@kylin.apache.org by "Shaofeng SHI (JIRA)" <ji...@apache.org> on 2017/11/29 06:58:00 UTC

[jira] [Updated] (KYLIN-1865) segment auto merge based on calendar week, month and year

     [ https://issues.apache.org/jira/browse/KYLIN-1865?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shaofeng SHI updated KYLIN-1865:
--------------------------------
    Issue Type: Wish  (was: Improvement)

> segment auto merge based on calendar week, month and year
> ---------------------------------------------------------
>
>                 Key: KYLIN-1865
>                 URL: https://issues.apache.org/jira/browse/KYLIN-1865
>             Project: Kylin
>          Issue Type: Wish
>            Reporter: hongbin ma
>            Assignee: hongbin ma
>
> Currently kylin allows users to specify some time ranges like (7days, 30days, 365days) to instruct auto merging daily segments. However, the design fails to respect the boundary of calendar week/month/year, which is often useful for real applications. For example, if a query only wants a month's data by providing a filter like `date > 2010-01-01 and data < 2010-02-01`, with current auto merging design we may end up with visiting two adjacent 30 days long segments.



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