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https://issues.apache.org/jira/browse/KYLIN-3186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16463530#comment-16463530
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Shaofeng SHI commented on KYLIN-3186:
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+1; Vsevolod, would you like to contribute a patch?
> Add support for partitioning columns that combine date and time (e.g.
> YYYYMMDDHHMISS)
> -------------------------------------------------------------------------------------
>
> Key: KYLIN-3186
> URL: https://issues.apache.org/jira/browse/KYLIN-3186
> Project: Kylin
> Issue Type: Improvement
> Components: Others
> Affects Versions: v2.2.0
> Reporter: Vsevolod Ostapenko
> Priority: Major
>
> In a multitude of existing enterprise applications partitioning is done on a
> single column that fuse date and time into a single value (string, integer or
> big integer). Typical formats are YYYYMMDDHHMM or YYYYMMDDHHMMSS (e.g.
> 201801181621 and 20180118154734).
> Such representation is human readable and provides natural sorting of the
> date/time values.
> Lack of support for such date/time representation requires some ugly
> workarounds, like creating views that split date and time into separate
> columns or data copying into tables with different partitioning scheme, none
> of which is a particularly good solution.
> More over, using views approach on Hive causes severe performance issues, due
> to inability of Hive optimizer correctly analyze filtering conditions
> auto-generated by Kylin during the flat table build step.
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