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https://issues.apache.org/jira/browse/HIVE-20437?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16606254#comment-16606254
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Andrew Sherman commented on HIVE-20437:
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+1 LGTM
> Handle schema evolution from float, double and decimal
> ------------------------------------------------------
>
> Key: HIVE-20437
> URL: https://issues.apache.org/jira/browse/HIVE-20437
> Project: Hive
> Issue Type: Bug
> Reporter: Janaki Lahorani
> Assignee: Janaki Lahorani
> Priority: Major
> Attachments: HIVE-20437.1.patch, HIVE-20437.2.patch,
> HIVE-20437.3.patch
>
>
> When data created as float, double or decimal in parquet format is read back
> using some other type, errors are seen. Parquet should behave just like any
> other format. If the value is valid for the new type, data is retuned
> otherwise null has to be returned.
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