[SPARK-20466] HadoopRDD#addLocalConfiguration throws NPE

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.2
• Fix Version/s: 2.1.3, 2.2.1, 2.3.0
• Component/s: Spark Core, YARN
• Assignee: Sahil Takiar
• Reporter: liyunzhang
• Created: 26/Apr/17 07:13
• Updated: 17/May/20 18:13
• Resolved: 03/Oct/17 23:57

Description

in spark2.0.2, it throws NPE

  17/04/23 08:19:55 ERROR executor.Executor: Exception in task 439.0 in stage 16.0 (TID 986)$ 
java.lang.NullPointerException$
^Iat org.apache.spark.rdd.HadoopRDD$.addLocalConfiguration(HadoopRDD.scala:373)$
^Iat org.apache.spark.rdd.HadoopRDD$$anon$1.<init>(HadoopRDD.scala:243)$
^Iat org.apache.spark.rdd.HadoopRDD.compute(HadoopRDD.scala:208)$
^Iat org.apache.spark.rdd.HadoopRDD.compute(HadoopRDD.scala:101)$
^Iat org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:319)$
^Iat org.apache.spark.rdd.RDD.iterator(RDD.scala:283)$
^Iat org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:38)$
^Iat org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:319)$
^Iat org.apache.spark.rdd.RDD.iterator(RDD.scala:283)$
^Iat org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:70)$
^Iat org.apache.spark.scheduler.Task.run(Task.scala:86)$
^Iat org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274)$
^Iat java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)$
^Iat java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)$
^Iat java.lang.Thread.run(Thread.java:745)$

suggestion to add some code to avoid NPE

 

   /** Add Hadoop configuration specific to a single partition and attempt. */
  def addLocalConfiguration(jobTrackerId: String, jobId: Int, splitId: Int, attemptId: Int,
                            conf: JobConf) {
    val jobID = new JobID(jobTrackerId, jobId)
    val taId = new TaskAttemptID(new TaskID(jobID, TaskType.MAP, splitId), attemptId)
    if ( conf != null){
    conf.set("mapred.tip.id", taId.getTaskID.toString)
    conf.set("mapred.task.id", taId.toString)
    conf.setBoolean("mapred.task.is.map", true)
    conf.setInt("mapred.task.partition", splitId)
    conf.set("mapred.job.id", jobID.toString)
   }
  }

Issue Links

• links to: [Github] Pull Request #19413 (sahilTakiar)