What are the benefits of block transfer?
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Is secondary namenode a substitute to the namenode?
How many instances of a jobtracker run on hadoop cluster?
Is it possible to provide multiple inputs to hadoop? If yes, explain.
Explain InputFormat?
What is the difference between rdbms and hadoop?
What is a checkpoint?
Explain the use of tasktracker in the hadoop cluster?
What are the functions of NameNode?
What should be the ideal replication factor in Hadoop Cluster?
What platform and java version are required to run hadoop?
Is it necessary to write jobs for hadoop in the java language?
What are different hdfs dfs shell commands to perform copy operation?
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