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https://issues.apache.org/jira/browse/HIVE-3678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13503531#comment-13503531
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Shreepadma Venugopalan commented on HIVE-3678:
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@Ashutosh: If store long/double types as a varchar instead of storing it as a
numeric type, we can avoid evolving the schema when we add a BigDecimal type.
That's the only benefit I see for storing long/double as a varchar. However, I
agree with you that we should avoid untyping data when possible. Let me know
your thoughts.
> Add metastore upgrade scripts for column stats schema changes
> -------------------------------------------------------------
>
> Key: HIVE-3678
> URL: https://issues.apache.org/jira/browse/HIVE-3678
> Project: Hive
> Issue Type: Bug
> Components: Metastore
> Reporter: Shreepadma Venugopalan
> Assignee: Shreepadma Venugopalan
> Fix For: 0.10.0
>
> Attachments: HIVE-3678.1.patch.txt, HIVE-3678.2.patch.txt
>
>
> Add upgrade script for column statistics schema changes for
> Postgres/MySQL/Oracle/Derby
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