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java.lang.NullPointerException at scala.collection.convert.Wrappers$JMapWrapperLike$$anon$2.<init>(Wrappers.scala:265) at scala.collection.convert.Wrappers$JMapWrapperLike$class.iterator(Wrappers.scala:264) at scala.collection.convert.Wrappers$JMapWrapper.iterator(Wrappers.scala:275) at scala.collection.IterableLike$class.foreach(IterableLike.scala:72) at scala.collection.AbstractIterable.foreach(Iterable.scala:54) at scala.collection.TraversableOnce$class.foldLeft(TraversableOnce.scala:144) at scala.collection.AbstractTraversable.foldLeft(Traversable.scala:105) at scala.collection.TraversableOnce$class.$div$colon(TraversableOnce.scala:138) at scala.collection.AbstractTraversable.$div$colon(Traversable.scala:105) at scala.collection.immutable.MapLike$class.$plus$plus(MapLike.scala:87) at scala.collection.immutable.AbstractMap.$plus$plus(Map.scala:187) at kafka.javaapi.consumer.ZookeeperConsumerConnector.createMessageStreams(ZookeeperConsumerConnector.scala:83) at kafka.javaapi.consumer.ZookeeperConsumerConnector.createMessageStreams(ZookeeperConsumerConnector.scala:97) at com.ctrip.ops.sysdev.inputs.Kafka.emit(Kafka.java:128) at com.ctrip.ops.sysdev.Main.main(Main.java:109)