Github user szyszy commented on a diff in the pull request:
https://github.com/apache/spark/pull/20761#discussion_r189877598
--- Diff:
resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/ResourceTypeHelper.scala
---
@@ -0,0 +1,180 @@
+/*
+ * 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 java.lang.reflect.InvocationTargetException
+
+import scala.util.control.NonFatal
+
+import org.apache.hadoop.yarn.api.records.Resource
+
+import org.apache.spark.internal.Logging
+import org.apache.spark.util.Utils
+
+/**
+ * This helper class uses some of Hadoop 3 methods from the yarn API,
+ * so we need to use reflection to avoid compile error when building
against Hadoop 2.x
+ */
+object ResourceTypeHelper extends Logging {
+ private val AMOUNT_AND_UNIT_REGEX = "([0-9]+)([A-Za-z]*)".r
+ private val resourceTypesNotAvailableErrorMessage =
+ "Ignoring updating resource with resource types because " +
+ "the version of YARN does not support it!"
+
+ def setResourceInfoFromResourceTypes(
+ resourceTypesParam: Map[String, String],
+ resource: Resource): Resource = {
+ if (resource == null) {
+ throw new IllegalArgumentException("Resource parameter should not be
null!")
+ }
+
+ if (!ResourceTypeHelper.isYarnResourceTypesAvailable()) {
+ logWarning(resourceTypesNotAvailableErrorMessage)
+ return resource
+ }
+
+ val resourceTypes = resourceTypesParam.map { case (k, v) => (
+ if (k.equals("memory")) {
+ logWarning("Trying to use 'memory' as a custom resource, converted
it to 'memory-mb'")
+ "memory-mb"
+ } else k, v)
+ }
+
+ logDebug(s"Custom resource types: $resourceTypes")
+ resourceTypes.foreach { rt =>
--- End diff --
fixed
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