Hadoop，
FAILED: RuntimeException java.net.ConnectException: Call to vm1/172.16.64.128:8020 failed on connection exception: java.net.ConnectException: Connection refusedHive
* 修改表
* NameNode
http://blog.csdn.net/bychjzh/article/details/7830508
http://www.codesky.net/article/201202/172840.html
http://www.linuxidc.com/Linux/2012-07/65005.htm
http://hadoop.apache.org/docs/r1.2.1/cluster_setup.html
http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/hdfs-default.xml
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