dongjoon-hyun commented on a change in pull request #24203: [SPARK-27269][SQL]
File source v2 should validate data schema only
URL: https://github.com/apache/spark/pull/24203#discussion_r268883514
##########
File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/FileTable.scala
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@@ -46,17 +46,27 @@ abstract class FileTable(
sparkSession, rootPathsSpecified, caseSensitiveMap, userSpecifiedSchema,
fileStatusCache)
}
- lazy val dataSchema: StructType = userSpecifiedSchema.orElse {
- inferSchema(fileIndex.allFiles())
- }.getOrElse {
- throw new AnalysisException(
- s"Unable to infer schema for $name. It must be specified manually.")
- }.asNullable
+ lazy val dataSchema: StructType = userSpecifiedSchema.map { schema =>
+ val partitionSchema = fileIndex.partitionSchema
+ val equality = sparkSession.sessionState.conf.resolver
+ StructType(schema.filterNot(f => partitionSchema.exists(p =>
equality(p.name, f.name))))
+ }.orElse {
+ inferSchema(fileIndex.allFiles())
+ }.getOrElse {
+ throw new AnalysisException(
+ s"Unable to infer schema for $name. It must be specified manually.")
+ }.asNullable
override lazy val schema: StructType = {
val caseSensitive = sparkSession.sessionState.conf.caseSensitiveAnalysis
SchemaUtils.checkColumnNameDuplication(dataSchema.fieldNames,
"in the data schema", caseSensitive)
+ dataSchema.foreach { field =>
+ if (!supportsDataType(field.dataType)) {
+ throw new AnalysisException(
+ s"$name data source does not support ${field.dataType.catalogString}
data type.")
Review comment:
Here, `name` is `Table.name`. Previously, this was `formatName`.
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