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Posted to common-issues@hadoop.apache.org by "Ajay Kumar (JIRA)" <ji...@apache.org> on 2017/12/06 23:10:00 UTC
[jira] [Comment Edited] (HADOOP-14914) Change to a safely casting
long to int.
[ https://issues.apache.org/jira/browse/HADOOP-14914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16280842#comment-16280842 ]
Ajay Kumar edited comment on HADOOP-14914 at 12/6/17 11:09 PM:
---------------------------------------------------------------
[~yufeigu], thanks for kicking Jenkins run.
TestUnbuffer and TestContainerLaunch are failing without the patch as well. Other two passed locally.
was (Author: ajayydv):
[~yufeigu], thanks for submitting the patch.
TestUnbuffer and TestContainerLaunch are failing without the patch as well. Other two passed locally.
> 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
> 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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