what is JobTracker in Hadoop? What are the actions followed by Hadoop?
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Explain the general mapreduce algorithm
What is the difference between a MapReduce InputSplit and HDFS block?
What are the four basic parameters of a reducer?
What are the disservices of utilizing Apache Spark over Hadoop MapReduce?
Compare RDBMS with Hadoop MapReduce.
How to optimize MapReduce Job?
what daemons run on a master node and slave nodes?
Differentiate Reducer and Combiner in Hadoop MapReduce?
What is the difference between an RDBMS and Hadoop?
What is a IdentityMapper and IdentityReducer in MapReduce ?
For a Hadoop job, how will you write a custom partitioner?
In Map Reduce why map write output to Local Disk instead of HDFS?
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