Can there be no Reducer?
What is Hadoop streaming?
Is client the end user in HDFS?
Can the balancer be run while Hadoop is in use?
Explain the difference between NameNode
What is the utility of using Writable Comparable Custom Class in Map Reduce code?
What other technologies have you used in hadoop sta ck?
what is difference between int and intwritable?
What is Apache Hadoop YARN?
What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?
What are channel selectors?
What are the stable versions of Hadoop?
Input Split & Record Reader and what they do?
what is the default replication factor in HDFS?
What is the core of the job in MapReduce framework?