Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/13837#discussion_r87733959
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSource.scala
---
@@ -322,6 +323,9 @@ case class DataSource(
val equality = sparkSession.sessionState.conf.resolver
StructType(schema.filterNot(f =>
partitionColumns.exists(equality(_, f.name))))
}.orElse {
+ if (allPaths.isEmpty && !format.isInstanceOf[TextFileFormat]) {
--- End diff --
Hi @gatorsmile, would this be better if we explain here text data source is
excluded because text datasource always uses a schema consisting of a string
field if the schema is not explicitly given?
BTW, should we maybe change `text.TextFileFormat` to `TextFileFormat `
https://github.com/apache/spark/pull/13837/files#diff-7a6cb188d2ae31eb3347b5629a679cecR139
?
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