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https://issues.apache.org/jira/browse/KYLIN-2718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16091000#comment-16091000
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Zhong Yanghong commented on KYLIN-2718:
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Is there an easy way to catch the long overflow? And should we do the overflow
detection at each step of combination calculation?
The value, log of the combination, is at the viewpoint of the number effective
dimensions, which is also intuitive.
> overflow when calculating combination amount based on static rules
> ------------------------------------------------------------------
>
> Key: KYLIN-2718
> URL: https://issues.apache.org/jira/browse/KYLIN-2718
> Project: Kylin
> Issue Type: Bug
> Components: Metadata
> Affects Versions: all
> Reporter: Zhong Yanghong
> Assignee: Zhong Yanghong
> Fix For: v2.0.0
>
> Attachments: APACHE-KYLIN-2718.patch
>
>
> In extreme case, value of *combination* will exceed Long.MAX_VALUE leading to
> the validation noneffective.
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