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https://issues.apache.org/jira/browse/KYLIN-5056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17392009#comment-17392009
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fanfanAlice commented on KYLIN-5056:
------------------------------------
Dev Design
step1: Add the sampling REST API
POST:
http://\{host}:\{port}/kylin/api/tables/\{project}/\{database.table}/sample_job
params:
{
"project":"ff_test_02",
"rows":200000,
"qualifiedTableName":"TPCH.CUSTOMER"
}
step2: Add the sampled job, TableAnalyzerJob.class
step3: Update metadata
> Implement Column Cardinality Statistics Job for Kylin 4
> -------------------------------------------------------
>
> Key: KYLIN-5056
> URL: https://issues.apache.org/jira/browse/KYLIN-5056
> Project: Kylin
> Issue Type: Improvement
> Components: Spark Engine
> Reporter: Xiaoxiang Yu
> Assignee: fanfanAlice
> Priority: Major
> Fix For: v4.1.0
>
>
> Column statistics information such as cardinality, min, max, will help kylin
> user know how to do query/build optimization on Cube.
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