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From "Nishkam Ravi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-10456) Bug in Configuration.java exposed by Spark (ConcurrentModificationException)
Date Wed, 02 Apr 2014 01:46:18 GMT
Nishkam Ravi created HADOOP-10456:
-------------------------------------

             Summary: Bug in Configuration.java exposed by Spark (ConcurrentModificationException)
                 Key: HADOOP-10456
                 URL: https://issues.apache.org/jira/browse/HADOOP-10456
             Project: Hadoop Common
          Issue Type: Bug
          Components: conf
            Reporter: Nishkam Ravi


The following exception occurs non-deterministically:
java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextEntry(HashMap.java:926)
        at java.util.HashMap$KeyIterator.next(HashMap.java:960)
        at java.util.AbstractCollection.addAll(AbstractCollection.java:341)
        at java.util.HashSet.<init>(HashSet.java:117)
        at org.apache.hadoop.conf.Configuration.<init>(Configuration.java:671)
        at org.apache.hadoop.mapred.JobConf.<init>(JobConf.java:439)
        at org.apache.spark.rdd.HadoopRDD.getJobConf(HadoopRDD.scala:110)
        at org.apache.spark.rdd.HadoopRDD$$anon$1.<init>(HadoopRDD.scala:154)
        at org.apache.spark.rdd.HadoopRDD.compute(HadoopRDD.scala:149)
        at org.apache.spark.rdd.HadoopRDD.compute(HadoopRDD.scala:64)
        at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:241)
        at org.apache.spark.rdd.RDD.iterator(RDD.scala:232)
        at org.apache.spark.rdd.MappedRDD.compute(MappedRDD.scala:31)
        at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:241)
        at org.apache.spark.rdd.RDD.iterator(RDD.scala:232)
        at org.apache.spark.rdd.MappedRDD.compute(MappedRDD.scala:31)
        at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:241)
        at org.apache.spark.rdd.RDD.iterator(RDD.scala:232)
        at org.apache.spark.rdd.MappedRDD.compute(MappedRDD.scala:31)
        at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:241)
        at org.apache.spark.rdd.RDD.iterator(RDD.scala:232)
        at org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:34)
        at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:241)
        at org.apache.spark.rdd.RDD.iterator(RDD.scala:232)
        at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:161)
        at org.apache.spark.scheduler.ShuffleMapTask.runTask(ShuffleMapTask.scala:102)
        at org.apache.spark.scheduler.Task.run(Task.scala:53)
        at org.apache.spark.executor.Executor$TaskRunner$$anonfun$run$1.apply$mcV$sp(Executor.scala:213)
        at org.apache.spark.deploy.SparkHadoopUtil$$anon$1.run(SparkHadoopUtil.scala:42)
        at org.apache.spark.deploy.SparkHadoopUtil$$anon$1.run(SparkHadoopUtil.scala:41)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
        at org.apache.spark.deploy.SparkHadoopUtil.runAsUser(SparkHadoopUtil.scala:41)
        at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:178)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:744)




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