Shreyas Joshi created HIVE-21464:
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Summary: ORC file merge/concatenation should support schema
evolution
Key: HIVE-21464
URL: https://issues.apache.org/jira/browse/HIVE-21464
Project: Hive
Issue Type: Improvement
Reporter: Shreyas Joshi
Concatenation should create an output file for every unique input schema.
This will allow concatenation to be used in cases where the table and ORC file
schema evolves, leading to files with different schemas in a partition.
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