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https://issues.apache.org/jira/browse/KYLIN-5556?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Guangyuan Feng updated KYLIN-5556:
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    Fix Version/s: 5.0-beta

> A large amount of tables to be loaded from datasources in a once request will 
> dramatically decrease the performance of querying and cleaning operations 
> --------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: KYLIN-5556
>                 URL: https://issues.apache.org/jira/browse/KYLIN-5556
>             Project: Kylin
>          Issue Type: Improvement
>          Components: Modeling
>            Reporter: Guangyuan Feng
>            Priority: Major
>             Fix For: 5.0-beta
>
>
> Currently `TableExtService#loadDbTables` method will calling Spark to load 
> all the tables in that datasource, without limit the number of tables to be 
> returned. If too many tables loaded, it will dramatically decrease the 
> performance of querying and cleaning operations.
> So it will be great that Kylin supplies a similar method with a threshold, 
> say 1000, to limit the most amount of the tables to be returned in a once 
> request.



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