Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/2087#discussion_r18939723
--- Diff:
core/src/test/scala/org/apache/spark/metrics/InputMetricsSuite.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.metrics
+
+import org.scalatest.FunSuite
+
+import org.apache.spark.SharedSparkContext
+import org.apache.spark.scheduler.{SparkListenerTaskEnd, SparkListener}
+
+import scala.collection.mutable.ArrayBuffer
+
+import java.io.{FileWriter, PrintWriter, File}
+
+class InputMetricsSuite extends FunSuite with SharedSparkContext {
+ test("input metrics when reading text file") {
+ val file = new File(getClass.getSimpleName + ".txt")
+ val pw = new PrintWriter(new FileWriter(file))
+ pw.println("some stuff")
+ pw.println("some other stuff")
+ pw.println("yet more stuff")
+ pw.println("too much stuff")
+ pw.close()
+ file.deleteOnExit()
+
+ val taskBytesRead = new ArrayBuffer[Long]()
+ sc.addSparkListener(new SparkListener() {
+ override def onTaskEnd(taskEnd: SparkListenerTaskEnd) {
+ taskBytesRead += taskEnd.taskMetrics.inputMetrics.get.bytesRead
+ }
+ })
+ sc.textFile("file://" + file.getAbsolutePath, 2).count()
+
+ // Wait for task end events to come in
+ Thread.sleep(100)
--- End diff --
Can you use the utility that waits into the listener bus is empty here?
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