Wechar created HIVE-26355:
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Summary: Column compare should be case insensitive
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
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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