Question

我从互联网上获得了WordCount.java代码，我尝试在包含必要的库之后在eclipse中运行它。但代码抛出了这个异常：

2015-05-27 17:48:24,759 WARN  util.NativeCodeLoader     
(NativeCodeLoader.java:<clinit>(62)) - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

Exception in thread "main" java.io.IOException: Cannot initialize Cluster. Please check your configuration for mapreduce.framework.name and the correspond server addresses.
at org.apache.hadoop.mapreduce.Cluster.initialize(Cluster.java:120)
at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:82)
at org.apache.hadoop.mapreduce.Cluster.<init>(Cluster.java:75)
at org.apache.hadoop.mapred.JobClient.init(JobClient.java:470)
at org.apache.hadoop.mapred.JobClient.<init>(JobClient.java:449)
at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:832)
at MapReduce.WordCount.main(WordCount.java:57)

你能告诉我这意味着什么，我该如何解决？我非常了解大数据，Hadoop和地图缩减程序，所以请详细解释。谢谢！

Answer 1

也许缺少原生图书馆。在$ {HADOOP_HOME} / lib / native中，有一些执行文件，尝试将这些文件添加到您的配置中。

运行Map减少程序时的大数据和hadoop异常

1 个答案: