What is the purpose of dfsadmin tool?
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Name the various types of lists supported by bootstrap.
What is the heartbeat used for?
Does google use hadoop?
What are the four characteristics of Big Data?
what are the steps involved in commissioning adding
did you maintain the hadoop cluster in-house or used hadoop in the cloud?
How will you make changes to the default configuration files?
How we can change Replication factor when Data is on the fly?
Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?
On which port does ssh work?
What will you do when NameNode is down?
What is zookeeper in hadoop?
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