java.lang.IllegalAccessError: tried to access method com.google.common.base.Stopwatch.()V from class org.apache.hadoop.mapred.FileInputFormat
	at org.apache.hadoop.mapred.FileInputFormat.getSplits(FileInputFormat.java:312)
	at org.apache.hadoop.mapred.lib.DelegatingInputFormat.getSplits(DelegatingInputFormat.java:107)
	at org.apache.hadoop.mapreduce.JobSubmitter.writeOldSplits(JobSubmitter.java:624)
	at org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:616)
	at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:492)
	at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1296)
	at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1293)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
	at org.apache.hadoop.mapreduce.Job.submit(Job.java:1293)
	at org.apache.hadoop.mapred.JobClient$1.run(JobClient.java:562)
	at org.apache.hadoop.mapred.JobClient$1.run(JobClient.java:557)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
	at org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:557)
	at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:548)

做了几个测试，其他版本不变，hadoop.version 为 2.4.0，2.4.1，2.5.2，2.6.1，2.6.4 都会报上面的错误，不知道是不是hadoop的bug，有人说将hadoop的源码重新编译一下就行，但我没试。

解决办法：
把hadoop version改成2.2.0就可以了，测了一下2.7.2也可以，所以估计是hadoop的一个坑，2.7.2就修复了。其他版本没试

http://blog.csdn.net/blackweekend/article/details/51719385