Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/12856#discussion_r62278940
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/sources/HadoopFsRelationTest.scala
---
@@ -486,7 +488,151 @@ abstract class HadoopFsRelationTest extends QueryTest
with SQLTestUtils with Tes
}
}
- test("Hadoop style globbing") {
+ test("load() - with directory of unpartitioned data in nested subdirs") {
+ withTempPath { dir =>
+ val subdir = new File(dir, "subdir")
+
+ val dataInDir = Seq(1, 2, 3).toDF("value")
+ val dataInSubdir = Seq(4, 5, 6).toDF("value")
+
+ /*
+
+ Directory structure to be generated
+
+ dir
+ |
+ |___ [ files of dataInDir ]
+ |
+ |___ subsubdir
+ |
+ |___ [ files of dataInSubdir ]
+ */
+
+ // Generated dataInSubdir, not data in dir
+ dataInSubdir.write
+ .format(dataSourceName)
+ .mode(SaveMode.Overwrite)
+ .save(subdir.getCanonicalPath)
+
+ // Inferring schema should throw error as it should not find any
file to infer
+ val e = intercept[Exception] {
+ sqlContext.read.format(dataSourceName).load(dir.getCanonicalPath)
+ }
+
+ e match {
+ case _: AnalysisException =>
+ assert(e.getMessage.contains("infer"))
--- End diff --
I think here
https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSource.scala#L269
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