CODEWITHSUNDEEP
hadoopnodesmaster-slave
user1002805
user1002805

Reputation: 73

hadoop master node slave node datanode

if a master node goes down what happens to the cluster? Can any slave node act as a master? Does it need any additional configuration?

Upvotes: 3

Views: 1300

Answers (2)

Sandeep Singh
Sandeep Singh

Reputation: 7990

If your Hadoop version 0.21 or higher. then you can configure checkpoint node for back up. If your hadoop version is lesser then it then secondary namenode is there for it.

You can create back up note instead for master failure. Back up node,checkpoint node hardware configuration should be same as namenode.

Enjoy hadooping :)

Upvotes: 1

Donald Miner
Donald Miner

Reputation: 39893

The NameNode and the JobTracker are single points of failure.

Upvotes: 2

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