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https://issues.apache.org/jira/browse/KYLIN-4903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17396975#comment-17396975
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ASF GitHub Bot commented on KYLIN-4903:
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zzcclp merged pull request #1722:
URL: https://github.com/apache/kylin/pull/1722
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> cache parent datasource to accelerate next layer's cuboid building
> ------------------------------------------------------------------
>
> Key: KYLIN-4903
> URL: https://issues.apache.org/jira/browse/KYLIN-4903
> Project: Kylin
> Issue Type: Improvement
> Affects Versions: v4.0.0-beta
> Reporter: Shengjun Zheng
> Assignee: Shengjun Zheng
> Priority: Major
> Fix For: v4.0.0
>
>
> In Kylin V4, parent datasource is not cached in next layer's cuboid building,
> causing repeated HDFS files read. Cacheing parent datasource in memory will
> in enhance 20~30% build performance in our case.
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