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MapReduce >> mail # user >> upgrade from primary + secondary NN to active + standby NN


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upgrade from primary + secondary NN to active + standby NN
Hi guys,

I am planning to upgrade to HA architecture and I am not sure if metadata
is backward capable.

Are there any problems that anybody is aware of?

Thanks in advance.
Serge
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