What happens if the number of reducers is 0 in Hadoop?
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Where are hadoop’s configuration files located and list them?
How can one write custom record reader?
What are some typical functions of job tracker in hadoop?
What does the mapred.job.tracker command do?
What is Distributed Cache in Hadoop?
Clarify what is sqoop in hadoop?
What are the important modes of hadoop?
What is tasktracker in hadoop?
What are the configuration files in Hadoop?
How often DataNode send heartbeat to NameNode in Hadoop?
What are the Hadoop features extended to its eco-system components ?
Explain InputSplit in Hadoop?
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