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Hadoop >> mail # user >> some questions about HA and secondary name node


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some questions about HA and secondary name node
hi,all :
  i have two questions ,hope any one can answer for me
1, if i use 2name nodes for HA ,the secondary name node still need?
2,the secondary name node use to merge fsimage and edits file,if secondary
name node is not needed for HA ,what if the name node edits file become
very long?
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