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https://issues.apache.org/jira/browse/HADOOP-14914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16290063#comment-16290063
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Chen Liang commented on HADOOP-14914:
-------------------------------------
I've committed to trunk, thanks Ajay for the contribution!
> Change to a safely casting long to int.
> ----------------------------------------
>
> Key: HADOOP-14914
> URL: https://issues.apache.org/jira/browse/HADOOP-14914
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 3.1.0
> Reporter: Yufei Gu
> Assignee: Ajay Kumar
> Fix For: 3.1.0
>
> Attachments: HADOOP-14914.001.patch, HADOOP-14914.002.patch
>
>
> There are bunches of casting long to int like this:
> {code}
> long l = 123
> int i = (int) l;
> {code}
> This is not a safe cast. if l is greater than Integer.MAX_VALUE, i would be
> negative, which is an unexpected behavior. We probably at least want to throw
> an exception in that case. I suggest to use {{Math.toIntExact(longValue)}} to
> replace them, which throws an exception if the value overflows an int.
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