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/*
* 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
sc.listenerBus.waitUntilEmpty(500)
assert(taskBytesRead.length == 2)
assert(taskBytesRead.sum == file.length())
}
}
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