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https://issues.apache.org/jira/browse/HIVE-6012?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13932080#comment-13932080
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Lefty Leverenz commented on HIVE-6012:
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Doc questions: Does *hive.compat* accept any Hive release number, or only
some? The default is 0.12 but can it be set to 0.12.0? Would it balk at
0.12.5 or just ignore .5? What about 0.11 and earlier releases -- would they
give the same behavior as 0.12?
> restore backward compatibility of arithmetic operations
> -------------------------------------------------------
>
> Key: HIVE-6012
> URL: https://issues.apache.org/jira/browse/HIVE-6012
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.13.0
> Reporter: Thejas M Nair
> Assignee: Jason Dere
> Attachments: HIVE-6012.1.patch, HIVE-6012.2.patch, HIVE-6012.3.patch,
> HIVE-6012.4.patch, HIVE-6012.5.patch, HIVE-6012.6.patch
>
>
> HIVE-5356 changed the behavior of some of the arithmetic operations, and the
> change is not backward compatible, as pointed out in this [jira
> comment|https://issues.apache.org/jira/browse/HIVE-5356?focusedCommentId=13813398&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13813398]
> {code}
> int / int => decimal
> float / float => double
> float * float => double
> float + float => double
> {code}
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