This in FAQ may also help:
http://kylin.apache.org/docs/gettingstarted/faq.html

What kind of data be left in ‘kylin.env.hdfs-working-dir’ ? We often
> execute kylin cleanup storage command, but now our working dir folder is
> about 300 GB size, can we delete old data manually?
>
>    -     The data in ‘hdfs-working-dir’ (‘hdfs:///kylin/kylin_metadata/’
>    by default) includes intermediate files (will be GC) and Cuboid data (won’t
>    be GC). The Cuboid data is kept for the further segments’ merge, as Kylin
>    couldn’t merge from HBase. If you’re sure those segments won’t be merged,
>    you can move them to other paths or even delete.
>    -      Please pay attention to the “resources” sub-folder under
>    ‘hdfs-working-dir’, which persists some big metadata files like
>    dictionaries and lookup tables’ snapshots. They shouldn’t be moved.
>
>
杨冠军 <champion.y...@kutesmart.com> 于2018年11月1日周四 上午9:10写道:

>
> 您好:
>         kylin构建完成后,会在hbase中产生很多文件,附件中为生成的文件截图,请问这些文件哪些可以删除?
>        谢谢!
>
> *杨冠军* 开发工程师
> * champion.y...@kutesmart.com <champion.y...@kutesmart.com> *
> *公司名称:青岛酷特智能股份有限公司*
> 地址:即墨市红领大街17号
> 电话:
> 手机:15563907071
>


-- 


Regards!

Aron Tao

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