What are the identity mapper and reducer in MapReduce?
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What is the InputSplit in map reduce ?
List out Hadoop's three configuration files?
What is the input type/format in MapReduce by default?
What is heartbeat in hdfs? Explain.
What are the steps involved in MapReduce framework?
How does Mappers run method works?
What is the difference between an RDBMS and Hadoop?
how to proceed to write your first mapreducer program?
Explain InputSplit in Hadoop MapReduce?
Mention when to use Map reduce mode?
What is a RecordReader in Hadoop MapReduce?
how can you debug Hadoop code?
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