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https://issues.apache.org/jira/browse/KYLIN-4321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17010215#comment-17010215
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weibin0516 commented on KYLIN-4321:
-----------------------------------
Past experience and a large amount of test data show that Spark's performance
is significantly better than MapReduce.
!screenshot-1.png!
!screenshot-2.png!
Currently, when the cube is built with the spark engine, the `Create fact
distinct columns` step uses mapreduce by default. Here we want to use the spark
engine to perform this step by default, that is, modify the`
kylin.engine.spark-fact-distinct` value to true.
> Create fact distinct columns using spark by default when build engine is spark
> ------------------------------------------------------------------------------
>
> Key: KYLIN-4321
> URL: https://issues.apache.org/jira/browse/KYLIN-4321
> Project: Kylin
> Issue Type: Improvement
> Reporter: weibin0516
> Assignee: weibin0516
> Priority: Major
> Fix For: v3.1.0
>
> Attachments: screenshot-1.png, screenshot-2.png
>
>
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