Hi, I am using KafkaSpout to ingest data into Storm. The versions are:
Storm-1.1.0 Storm-kafka 1.1.0 kafka_2.10-0.8.2.2 The program worked well at the beginning, but at some point the KafkaSpout threw an exception and the program seemed stuck there afterwards. The program can proceed after restarted but the exception recurs occasionally. Below is the log: java.lang.NoClassDefFoundError: Could not initialize class com.yammer.metrics.Metrics at kafka.metrics.KafkaMetricsGroup$class.newTimer(KafkaMetricsGroup.scala:85) at kafka.consumer.FetchRequestAndResponseMetrics.newTimer(FetchRequestAndResponseStats.scala:26) at kafka.consumer.FetchRequestAndResponseMetrics.<init>(FetchRequestAndResponseStats.scala:35) at kafka.consumer.FetchRequestAndResponseStats.<init>(FetchRequestAndResponseStats.scala:46) at kafka.consumer.FetchRequestAndResponseStatsRegistry$$anonfun$2.apply(FetchRequestAndResponseStats.scala:59) at kafka.consumer.FetchRequestAndResponseStatsRegistry$$anonfun$2.apply(FetchRequestAndResponseStats.scala:59) at kafka.utils.Pool.getAndMaybePut(Pool.scala:61) at kafka.consumer.FetchRequestAndResponseStatsRegistry$.getFetchRequestAndResponseStats(FetchRequestAndResponseStats.scala:63) at kafka.consumer.SimpleConsumer.<init>(SimpleConsumer.scala:39) at kafka.javaapi.consumer.SimpleConsumer.<init>(SimpleConsumer.scala:34) at org.apache.storm.kafka.DynamicPartitionConnections.register(DynamicPartitionConnections.java:60) at org.apache.storm.kafka.PartitionManager.<init>(PartitionManager.java:96) at org.apache.storm.kafka.ZkCoordinator.refresh(ZkCoordinator.java:108) at org.apache.storm.kafka.ZkCoordinator.getMyManagedPartitions(ZkCoordinator.java:69) at org.apache.storm.kafka.KafkaSpout.nextTuple(KafkaSpout.java:130) at org.apache.storm.daemon.executor$fn__4976$fn__4991$fn__5022.invoke(executor.clj:644) at org.apache.storm.util$async_loop$fn__557.invoke(util.clj:484) at clojure.lang.AFn.run(AFn.java:22) at java.lang.Thread.run(Thread.java:748) Could anybody tell me why? ________________________________ wangchunc...@outlook.com
