What is shared FS in the standby namenode?

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Hey. Can somebody explain me the concept of shared FS in standby namenode?
Dec 20, 2018 in Big Data Hadoop by digger
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Shared FS Basically implies to the high Availability in Hadoop 2.X.

In this shared FS, ZooKeeper Failover Controller (ZKFC) is responsible for HA(High Availability) Monitoring of the NameNode service and for automatic failover when the Active NameNode is unavailable. 

answered Dec 20, 2018 by Omkar
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