You decide to create a cluster which runs HDFS in High Availability mode with automatic
failover, using Quorum Storage. What is the purpose of ZooKeeper in such a configuration?
A.
It monitors an NFS mount point and reports if the mount point disappears
B.
Clients connect to ZooKeeper to determine which NameNode is Active
C.
It both keeps track of which NameNode is Active at any given time, and manages the
Edits file. Which is a log of changes to the HDFS filesystem
D.
It only keeps track of which NameNode is Active at any given time
E.
If only manages the Edits file, which is log of changes to the HDFS filesystem
Explanation:
D
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D is correct
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D
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D
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D. https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/HDFSHighAvailabilityWithQJM.html
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