http://hadoop.apache.org/docs/r2.3.0/hadoop-yarn/hadoop-yarn-site/HDFSHighAvailabilityWithQJM.html
要注意的是
引用
hdfs-daemon.sh journalnode
命令不存在,要用
引用
hadoop-daemon.sh start journalnode
引用
hdfs -initializeSharedEdits
写错了,是
引用
hdfs namenode -initializeSharedEdits
hadoop 2.3的HA中,最多支持两个namenode