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https://issues.apache.org/jira/browse/KYLIN-3987?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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nichunen resolved KYLIN-3987.
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Resolution: Fixed
> Give more reducer for UHC column in fact distinct job
> -----------------------------------------------------
>
> Key: KYLIN-3987
> URL: https://issues.apache.org/jira/browse/KYLIN-3987
> Project: Kylin
> Issue Type: Bug
> Reporter: Chao Long
> Assignee: Chao Long
> Priority: Major
> Fix For: v2.6.2
>
>
> The defualt value of the reducer number for UHC column in fact distinct job
> is too small(default 1), the fact distinct job may be very slow, even throw
> OOM exception. We should give it a large value by default.
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