Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/20266#discussion_r161668457
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/FileBasedDataSourceSuite.scala ---
@@ -0,0 +1,66 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql
+
+import org.apache.spark.sql.test.SharedSQLContext
+
+class FileBasedDataSourceSuite extends QueryTest with SharedSQLContext {
+ import testImplicits._
+
+ Seq("orc", "parquet", "csv", "json", "text").foreach { format =>
+ test(s"Writing empty datasets should not fail - $format") {
+ withTempDir { dir =>
+
Seq("str").toDS.limit(0).write.format(format).save(dir.getCanonicalPath +
"/tmp")
--- End diff --
Yep. It's fixed by using `withTempPath`.
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