What do you think about the speculative execution?
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Clarify what is sequence file input format?
What type of data hadoop can handle ?
What is the purpose of context object?
What do you understand by unit and ()in scala?
If no custom partitioner is defined in Hadoop then how is data partitioned before it is sent to the reducer?
What is the command to change the replication factor ?
What is JobTracker?
Is there another way to check whether Namenode is working?
List out the some common problems faced by data analyst?
Specify what the information segments utilized by hadoop are?
How many datanodes can run on a single Hadoop cluster?
What is the best practice to deploy the secondary name node?
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