Is zkfc (zookeeper failover controller) a Hadoop-only thing or something more general to Zookeeper?

[Richard Sharpe]

Hi folks,

I have a need for failover in a Zookeeper cluster ... does zkfc do
that generally or is it a Hadoop only thing?

-- 
Regards,
Richard Sharpe
(何以解憂？唯有杜康。--曹操)