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https://issues.apache.org/jira/browse/FLINK-4572?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15471566#comment-15471566
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ASF GitHub Bot commented on FLINK-4572:
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Github user greghogan commented on the issue:
https://github.com/apache/flink/pull/2469
Do you have a second use case in mind for adding this function to
`MathUtils`? My thought would be to keep this separate to avoid confusion
between signed and unsigned downcasts.
> Convert to negative in LongValueToIntValue
> ------------------------------------------
>
> Key: FLINK-4572
> URL: https://issues.apache.org/jira/browse/FLINK-4572
> Project: Flink
> Issue Type: Bug
> Components: Gelly
> Affects Versions: 1.2.0
> Reporter: Greg Hogan
> Assignee: Greg Hogan
> Priority: Minor
>
> The Gelly drivers expect that scale 32 edges, represented by the lower 32
> bits of {{long}} values, can be converted to {{int}} values. Values between
> 2^31 and 2^32 - 1 should be converted to negative integers, which is not
> supported by {{MathUtils.checkedDownCast}}.
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