at org.apache.hadoop.io.serializer.SerializationFactory.getSerializer(SerializationFactory.java:73)

at org . Apache . hadoop . io . serializer . serialization factory . get serializer(serialization factory . Java:73)at . Apache . Hadoop . io . serializer . serialization factory . get serializer(serialization factory . Java:73)简介:运行Hadoop统计学生成绩的例子报了这个错误。不做有什么错？我很沮丧，我甚至不知道如何跟踪它。我请求上帝指出我。 控制台报告的错误:13/09/12 00:15:20信息图