Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/16134#discussion_r91839339
--- 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 --
http://www.scala-lang.org/api/2.9.3/scala/collection/immutable/List.html
`:::` is prepend. Let me use `append` here. That should be more common.
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