Github user mgaido91 commented on a diff in the pull request: https://github.com/apache/spark/pull/23186#discussion_r237889521 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/FileIndexSuite.scala --- @@ -65,6 +65,34 @@ class FileIndexSuite extends SharedSQLContext { } } + test("SPARK-26230: if case sensitive, validate partitions with original column names") { + withTempDir { dir => + val partitionDirectory = new File(dir, s"a=1") + partitionDirectory.mkdir() + val file = new File(partitionDirectory, "text.txt") + stringToFile(file, "text") + val partitionDirectory2 = new File(dir, s"A=2") + partitionDirectory2.mkdir() + val file2 = new File(partitionDirectory2, "text.txt") + stringToFile(file2, "text") + val path = new Path(dir.getCanonicalPath) + + withSQLConf(SQLConf.CASE_SENSITIVE.key -> "false") { + val fileIndex = new InMemoryFileIndex(spark, Seq(path), Map.empty, None) + val partitionValues = fileIndex.partitionSpec().partitions.map(_.values) + assert(partitionValues.length == 2) + } + + withSQLConf(SQLConf.CASE_SENSITIVE.key -> "true") { + val msg = intercept[AssertionError] { + val fileIndex = new InMemoryFileIndex(spark, Seq(path), Map.empty, None) + fileIndex.partitionSpec() + }.getMessage + assert(msg.contains("Conflicting partition column names detected")) --- End diff -- can we ensure that the message contains the right partitions?
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