Gengliang Wang created SPARK-27926:
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Summary: Allow altering table add columns with
CSVFileFormat/JsonFileFormat provider
Key: SPARK-27926
URL: https://issues.apache.org/jira/browse/SPARK-27926
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 3.0.0
Reporter: Gengliang Wang
In the previous work of csv/json migration, CSVFileFormat/JsonFileFormat is
removed in the table provider whitelist of
`AlterTableAddColumnsCommand.verifyAlterTableAddColumn`:
https://github.com/apache/spark/pull/24005
https://github.com/apache/spark/pull/24058
This is regression. If a table is created with Provider
`org.apache.spark.sql.execution.datasources.csv.CSVFileFormat` or
`org.apache.spark.sql.execution.datasources.json.JsonFileFormat`, Spark should
support the "alter table add column" operation.
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