问在Hadoop上运行时NoSuchMethodError，而在本地运行时不运行
EN

Stack Overflow用户

提问于 2015-07-23 22:42:56

回答 2查看 1.4K关注 0票数 4

在Hadoop2.0.0-cdh4.3.1上运行程序时，MapReduce给出了以下错误：

 java.lang.NoSuchMethodError:com.google.common.util.concurrent.Futures.withFallback

但是，当我通过执行JAR进行测试时：

java -cp myclass

它运行得完美无缺。我在这里不知道，就好像JAR中有所谓的Futures.withFallback一样，这就是为什么在本地执行它的原因。它使用番石榴连接Cassandra，完整的堆栈跟踪如下：

attempt_201507081740_21115_m_000050_0: [FATAL] Child - Error running child : java.lang.NoSuchMethodError: com.google.common.util.concurrent.Futures.withFallback(Lcom/google/common/util/concurrent/ListenableFuture;Lcom/google/common/util/concurrent/FutureFallback;Ljava/util/concurrent/Executor;)Lcom/google/common/util/concurrent/ListenableFuture;
attempt_201507081740_21115_m_000050_0:  at com.datastax.driver.core.Connection.initAsync(Connection.java:176)
attempt_201507081740_21115_m_000050_0:  at com.datastax.driver.core.Connection$Factory.open(Connection.java:721)
attempt_201507081740_21115_m_000050_0:  at com.datastax.driver.core.ControlConnection.tryConnect(ControlConnection.java:244)
attempt_201507081740_21115_m_000050_0:  at com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:190)
attempt_201507081740_21115_m_000050_0:  at com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:78)
attempt_201507081740_21115_m_000050_0:  at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:1272)
attempt_201507081740_21115_m_000050_0:  at com.datastax.driver.core.Cluster.init(Cluster.java:158)
attempt_201507081740_21115_m_000050_0:  at com.datastax.driver.core.Cluster.connect(Cluster.java:248)
attempt_201507081740_21115_m_000050_0:  at com.datastax.driver.core.Cluster.connect(Cluster.java:281)
attempt_201507081740_21115_m_000050_0:  at com.cassandra.CassandraHandler.getConnection(CassandraHandler.java:40)
attempt_201507081740_21115_m_000050_0:  at com.json.flatten.DynamicJsonFlattener.<init>(DynamicJsonFlattener.java:35)
attempt_201507081740_21115_m_000050_0:  at com.mapreduce.Map.map(Map.java:18)
attempt_201507081740_21115_m_000050_0:  at com.mapreduce.Map.map(Map.java:13)
attempt_201507081740_21115_m_000050_0:  at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:140)
attempt_201507081740_21115_m_000050_0:  at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:672)
attempt_201507081740_21115_m_000050_0:  at org.apache.hadoop.mapred.MapTask.run(MapTask.java:330)
attempt_201507081740_21115_m_000050_0:  at org.apache.hadoop.mapred.Child$4.run(Child.java:268)
attempt_201507081740_21115_m_000050_0:  at java.security.AccessController.doPrivileged(Native Method)
attempt_201507081740_21115_m_000050_0:  at javax.security.auth.Subject.doAs(Subject.java:396)
 attempt_201507081740_21115_m_000050_0:  at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)
attempt_201507081740_21115_m_000050_0:  at org.apache.hadoop.mapred.Child.main(Child.java:262)