Mention what is distributed cache in hadoop?
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What is JPS? Why is it used in Hadoop?
Explain how can you check whether namenode is working beside using the jps command?
What kind of hardware is best for hadoop?
Where is hadoop-env.sh file present?
How many InputSplits will be made by hadoop framework?
What is NameNode? How NameNode tackle Datanode failures in Hadoop?
How to create a user in Hadoop?
What do you mean by the NameNode High Availability in hadoop?
Explain how is data partitioned before it is sent to the reducer if no custom partitioner is defined in hadoop?
What is pseudo-distributed mode?
What happen if number of reducer is set to 0 in Hadoop?
What happen on the namenode when a client tries to read a data file?
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