Github user joan38 commented on a diff in the pull request:

    https://github.com/apache/spark/pull/11747#discussion_r56767638
  
    --- Diff: 
core/src/test/scala/org/apache/spark/scheduler/SparkListenerSuite.scala ---
    @@ -255,21 +262,19 @@ class SparkListenerSuite extends SparkFunSuite with 
LocalSparkContext with Match
             taskInfoMetrics.map(_._2.executorDeserializeTime),
             stageInfo + " executorDeserializeTime")
     
    -      /* Test is disabled (SEE SPARK-2208)
           if (stageInfo.rddInfos.exists(_.name == d4.name)) {
             checkNonZeroAvg(
               taskInfoMetrics.map(_._2.shuffleReadMetrics.get.fetchWaitTime),
               stageInfo + " fetchWaitTime")
           }
    -      */
     
           taskInfoMetrics.foreach { case (taskInfo, taskMetrics) =>
    -        taskMetrics.resultSize should be > (0L)
    +        taskMetrics.resultSize should be > 0L
             if (stageInfo.rddInfos.exists(info => info.name == d2.name || 
info.name == d3.name)) {
    -          taskMetrics.inputMetrics should not be ('defined)
    -          taskMetrics.outputMetrics should not be ('defined)
    +          taskMetrics.inputMetrics should not be 'defined
    +          taskMetrics.outputMetrics should not be 'defined
               taskMetrics.shuffleWriteMetrics should be ('defined)
    -          taskMetrics.shuffleWriteMetrics.get.bytesWritten should be > (0L)
    +          taskMetrics.shuffleWriteMetrics.get.bytesWritten should be > 0L
    --- End diff --
    
    Ah yeah, that's because I usually write:
    taskMetrics.shuffleWriteMetrics shouldBe 'defined
    instead of:
    taskMetrics.shuffleWriteMetrics should be ('defined)
    I find it much quicker to write and Idea doesn't warn me on the useless 
brackets. Never mind I reverted this.
    
    I just pushed the 25ms version. "Jenkins retest this please" 
:stuck_out_tongue_winking_eye: 


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