Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/16134#discussion_r91829975 --- Diff: sql/hive/src/test/scala/org/apache/spark/sql/hive/InsertIntoHiveTableSuite.scala --- @@ -166,6 +166,30 @@ class InsertIntoHiveTableSuite extends QueryTest with TestHiveSingleton with Bef sql("DROP TABLE tmp_table") } + test("Delete the temporary staging directory and files after each insert") { + withTempDir { tmpDir => + withTable("tab") { + sql( + s""" + |CREATE TABLE tab(c1 string) + |location '${tmpDir.toURI.toString}' + """.stripMargin) + + (1 to 3).map { i => + sql(s"INSERT OVERWRITE TABLE tab SELECT '$i'") + } + def listFiles(path: File): List[String] = { + val dir = path.listFiles() + val folders = dir.filter(_.isDirectory).toList + val filePaths = dir.map(_.getName).toList + filePaths ::: folders.flatMap(listFiles) --- End diff -- what's `:::`? streaming collection?
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