关于MapReduce

坑:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/util/StopWatch
    at org.apache.hadoop.mapred.FileInputFormat.getSplits(FileInputFormat.java:314)

啊,还是最爱StackOverFlow啊!!!
一直报上面错误,找了半天原因,在sof上看到是版本原因,果然,更换pom.xml版本后,解决了问题!
I solved the problem , actually there was version incompetency so i change hadoop-client 2.6.0 to 2.7.0


    org.apache.hadoop
    hadoop-common
    2.7.2

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