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https://issues.apache.org/jira/browse/HIVE-26355?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wechar updated HIVE-26355:
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Summary: Column compare should be case insensitive for name (was: Column
compare should be case insensitive)
> Column compare should be case insensitive for name
> --------------------------------------------------
>
> Key: HIVE-26355
> URL: https://issues.apache.org/jira/browse/HIVE-26355
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 4.0.0-alpha-1
> Reporter: Wechar
> Assignee: Wechar
> Priority: Major
> Fix For: 4.0.0-alpha-2
>
>
> Hive stores all name related value as lower case, such as db_name, tbl_name,
> col_name etc. But the compare of {{FieldSchema}} does not ignore the case of
> name, which may cause incorrect result of compare.
> *Bug Description:*
> Some computing engines are case sensitive for column name. For example, Spark
> will add a table property to save the column fields when creating a table,
> and will replace column fields with this property when fetching table fields.
> When calling {{*ALTER TABLE ... ADD COLUMNS*}}, the compare of fields between
> old table and new table will be not expected, and the ADD COLUMNS operation
> will be cascaded to PARTITIONS, which is unnecessary and time consuming if
> the table has many partitions.
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