[SPARK-3457] ConcurrentModificationException starting up pyspark

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.1.0
• Component/s: Spark Core

Environment

Hadoop 2.3 (CDH 5.1) on Ubuntu precise

• Assignee: Unassigned
• Reporter: Shay Rojansky
• Created: 09/Sep/14 15:16
• Updated: 08/Mar/15 14:17
• Resolved: 08/Mar/15 14:17

Description

Just downloaded Spark 1.1.0-rc4. Launching pyspark for the very first time in yarn-client mode (no additional params or anything), I got the exception below. Rerunning pyspark 5 times afterwards did not reproduce the issue.

14/09/09 18:07:58 INFO YarnClientSchedulerBackend: Application report from ASM:
         appMasterRpcPort: 0
         appStartTime: 1410275267606
         yarnAppState: RUNNING

14/09/09 18:07:58 INFO YarnClientSchedulerBackend: Add WebUI Filter. org.apache.hadoop.yarn.server.webproxy.amfilter.AmIpFilter, PROXY_HOST=master.
grid.eaglerd.local,PROXY_URI_BASE=http://master.grid.eaglerd.local:8088/proxy/application_1410268447887_0011, /proxy/application_1410268447887_0011
Traceback (most recent call last):
  File "/opt/spark/python/pyspark/shell.py", line 44, in <module>
14/09/09 18:07:58 INFO JettyUtils: Adding filter: org.apache.hadoop.yarn.server.webproxy.amfilter.AmIpFilter
    sc = SparkContext(appName="PySparkShell", pyFiles=add_files)
  File "/opt/spark/python/pyspark/context.py", line 107, in __init__
    conf)
  File "/opt/spark/python/pyspark/context.py", line 155, in _do_init
    self._jsc = self._initialize_context(self._conf._jconf)
  File "/opt/spark/python/pyspark/context.py", line 201, in _initialize_context
    return self._jvm.JavaSparkContext(jconf)
  File "/opt/spark/python/lib/py4j-0.8.2.1-src.zip/py4j/java_gateway.py", line 701, in __call__
  File "/opt/spark/python/lib/py4j-0.8.2.1-src.zip/py4j/protocol.py", line 300, in get_return_value
py4j.protocol.Py4JJavaError: An error occurred while calling None.org.apache.spark.api.java.JavaSparkContext.
: java.util.ConcurrentModificationException
        at java.util.Hashtable$Enumerator.next(Hashtable.java:1167)
        at scala.collection.convert.Wrappers$JPropertiesWrapper$$anon$3.next(Wrappers.scala:458)
        at scala.collection.convert.Wrappers$JPropertiesWrapper$$anon$3.next(Wrappers.scala:454)
        at scala.collection.Iterator$class.toStream(Iterator.scala:1143)
        at scala.collection.AbstractIterator.toStream(Iterator.scala:1157)
        at scala.collection.Iterator$$anonfun$toStream$1.apply(Iterator.scala:1143)
        at scala.collection.Iterator$$anonfun$toStream$1.apply(Iterator.scala:1143)
        at scala.collection.immutable.Stream$Cons.tail(Stream.scala:1085)
        at scala.collection.immutable.Stream$Cons.tail(Stream.scala:1077)
        at scala.collection.immutable.Stream$$anonfun$filteredTail$1.apply(Stream.scala:1149)
        at scala.collection.immutable.Stream$$anonfun$filteredTail$1.apply(Stream.scala:1149)
        at scala.collection.immutable.Stream$Cons.tail(Stream.scala:1085)
        at scala.collection.immutable.Stream$Cons.tail(Stream.scala:1077)
        at scala.collection.immutable.Stream.length(Stream.scala:284)
        at scala.collection.SeqLike$class.sorted(SeqLike.scala:608)
        at scala.collection.AbstractSeq.sorted(Seq.scala:40)
        at org.apache.spark.SparkEnv$.environmentDetails(SparkEnv.scala:324)
        at org.apache.spark.SparkContext.postEnvironmentUpdate(SparkContext.scala:1297)
        at org.apache.spark.SparkContext.<init>(SparkContext.scala:334)
        at org.apache.spark.api.java.JavaSparkContext.<init>(JavaSparkContext.scala:53)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
        at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:234)
        at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:379)
        at py4j.Gateway.invoke(Gateway.java:214)
        at py4j.commands.ConstructorCommand.invokeConstructor(ConstructorCommand.java:79)
        at py4j.commands.ConstructorCommand.execute(ConstructorCommand.java:68)
        at py4j.GatewayConnection.run(GatewayConnection.java:207)
        at java.lang.Thread.run(Thread.java:745)

Issue Links

• duplicates: SPARK-4952 Handle ConcurrentModificationExceptions in SparkEnv.environmentDetails