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setOutputValueClass

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java - Driver 中的 job.setOutputKeyClass 和 setOutputValueClass 与 reducer 的 context.write 方法不匹配,程序仍然运行正常。怎么办?

驱动代码:publicclassWcDriver{publicstaticvoidmain(String[]args)throwsIOException,InterruptedException,ClassNotFoundException{Configurationconf=newConfiguration();Jobjob=newJob(conf,"WcDriver");job.setJarByClass(WcDriver.class);job.setOutputKeyClass(Text.class);job.setOutputValueClass(LongWritable.cl