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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
Serge Blazhievsky 2013-05-22, 00:19
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