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https://issues.apache.org/jira/browse/HIVE-8619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14187604#comment-14187604
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Laljo John Pullokkaran commented on HIVE-8619:
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Hive UDAFs seem to treat double's differently than other types.
> CBO causes some more type problems
> ----------------------------------
>
> Key: HIVE-8619
> URL: https://issues.apache.org/jira/browse/HIVE-8619
> Project: Hive
> Issue Type: Bug
> Components: CBO
> Reporter: Sergey Shelukhin
> Assignee: Laljo John Pullokkaran
> Priority: Critical
> Attachments: HIVE-8619.patch
>
>
> On recent rerun, tests such as char_cast, decimal_2, literal_double,
> vector_elt (incl. in Tez), udf4, vector_decimal_math_funcs have changes in
> results it looks like something is broken with types again; ".0" suffix
> disappeared in some cases (in char_cast it's probably the simplest to see),
> number formats changed when casts are involved.
> Also, windowing_expressions and couple more tests fail due to attempts to
> cast Double to Int writables, might be the same issue.
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