http://blog.csdn.net/totxian/article/details/45248399
http://www.aboutyun.com/thread-13679-1-1.html
http://www.aboutyun.com/thread-11909-1-1.html
http://hadoop.apache.org/docs/r2.6.0/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html
http://blog.csdn.net/cuishi0/article/details/6825480
http://f.dataguru.cn/thread-254109-1-1.html
http://blog.csdn.net/u014393917/article/details/25913363
http://debugo.com/namenode-ha/
原文：http://www.cnblogs.com/jvava/p/5089607.html