Github user janewangfb commented on a diff in the pull request:
https://github.com/apache/spark/pull/18975#discussion_r137398776
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/execution/HiveTmpPath.scala
---
@@ -0,0 +1,204 @@
+/*
+ * 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.hive.execution
+
+import java.io.{File, IOException}
+import java.net.URI
+import java.text.SimpleDateFormat
+import java.util.{Date, Locale, Random}
+
+import scala.util.control.NonFatal
+
+import org.apache.hadoop.conf.Configuration
+import org.apache.hadoop.fs.{FileSystem, Path}
+import org.apache.hadoop.hive.common.FileUtils
+import org.apache.hadoop.hive.ql.exec.TaskRunner
+
+import org.apache.spark.sql.SparkSession
+import org.apache.spark.sql.execution.command.RunnableCommand
+import org.apache.spark.sql.hive.HiveExternalCatalog
+import org.apache.spark.sql.hive.client.HiveVersion
+
+// Base trait for getting a temporary location for writing data
+private[hive] trait HiveTmpPath extends RunnableCommand {
--- End diff --
removed RunnableCommand, the classes that exten HiveTmpPath already extends
RunnableCommand
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