Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/20761#discussion_r224272133
--- Diff:
resource-managers/yarn/src/test/scala/org/apache/spark/deploy/yarn/ResourceRequestTestHelper.scala
---
@@ -0,0 +1,86 @@
+/*
+ * 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.deploy.yarn
+
+import scala.collection.JavaConverters._
+import scala.collection.mutable.ListBuffer
+
+import org.apache.hadoop.yarn.api.records.Resource
+
+import org.apache.spark.util.Utils
+
+object ResourceRequestTestHelper {
+ def initializeResourceTypes(resourceTypes: List[String]): Unit = {
+ if (!ResourceRequestHelper.isYarnResourceTypesAvailable()) {
+ throw new IllegalStateException("This method should not be invoked "
+
+ "since YARN resource types is not available because of old Hadoop
version!" )
+ }
+
+ val allResourceTypes = new ListBuffer[AnyRef]
+ val defaultResourceTypes = List(
+ createResourceTypeInfo("memory-mb"),
+ createResourceTypeInfo("vcores"))
+ val customResourceTypes = resourceTypes.map(rt =>
createResourceTypeInfo(rt))
--- End diff --
`.map { rt => ... }`, or `.map(createResourceTypeInfo)`
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