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how to add JournalNodes
I use QJM for HA in hadoop2.0,  now  there are three JournalNodes in HDFS
cluster, I want to add two new JournalNodes to HDFS cluster, how to do it?
Do I need to restart HDFS cluster?
Thanks,

LiuLei
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB