What happens when a datanode fails ?
What is KeyValueTextInputFormat in Hadoop MapReduce?
Explain what does the conf.setmapper class do?
Can there be no Reducer?
In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?
What are the disservices of utilizing Apache Spark over Hadoop MapReduce?
What is Distributed Cache in the MapReduce Framework?
What are the advantages of using mapreduce with hadoop?
What is heartbeat in hdfs? Explain.
What is a scarce system resource?
how indexing in HDFS is done?
Define the Use of MapReduce?
what is Speculative Execution?