Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/21635#discussion_r199543397
--- Diff:
resource-managers/yarn/src/main/scala/org/apache/spark/deploy/yarn/YarnClusterSchedulerSource.scala
---
@@ -0,0 +1,53 @@
+/*
+ * 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 com.codahale.metrics.{Gauge, MetricRegistry}
+
+import org.apache.spark.metrics.source.Source
+
+private[spark] class YarnClusterSchedulerSource(yarnAllocator:
YarnAllocator) extends Source {
+
+ override val sourceName: String = "yarn"
+ override val metricRegistry: MetricRegistry = new MetricRegistry()
+
+ metricRegistry.register(MetricRegistry.name("numExecutorsFailed"), new
Gauge[Int] {
+ override def getValue: Int = yarnAllocator.getNumExecutorsFailed
+ })
+
+ metricRegistry.register(MetricRegistry.name("numExecutorsRunning"), new
Gauge[Int] {
+ override def getValue: Int = yarnAllocator.getNumExecutorsRunning
+ })
+
+ metricRegistry.register(MetricRegistry.name("numReleasedContainers"),
new Gauge[Int] {
+ override def getValue: Int = yarnAllocator.getNumReleasedContainers
+ })
+
+
metricRegistry.register(MetricRegistry.name("numPendingLossReasonRequests"),
new Gauge[Int] {
+ override def getValue: Int =
yarnAllocator.getNumPendingLossReasonRequests
--- End diff --
yeah I would leave it out if no one specifically requested it and we can't
think of use case. Its easier to add later then to remove.
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