Github user clockfly commented on a diff in the pull request: https://github.com/apache/spark/pull/15024#discussion_r78471137 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/command/createDataSourceTables.scala --- @@ -154,13 +149,8 @@ case class CreateDataSourceTableAsSelectCommand( return Seq.empty[Row] case SaveMode.Append => // Check if the specified data source match the data source of the existing table. - val dataSource = DataSource( - sparkSession = sparkSession, - userSpecifiedSchema = Some(query.schema.asNullable), - partitionColumns = table.partitionColumnNames, - bucketSpec = table.bucketSpec, - className = provider, - options = optionsWithPath) + val previousProvider = --- End diff -- Maybe rename as existingFileFormat or existingProvider?
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