How is the distance between two nodes defined in Hadoop?
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What is a speculative execution in Apache Hadoop MapReduce?
What stored in HDFS?
What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?
What if rack 2 and datanode fails?
How to write a Custom Key Class?
Mention what is the number of default partitioner in Hadoop?
what are the steps involved in decommissioning removing
What is the difference between rdbms and hadoop?
How client application interacts with the NameNode?
How does a namenode handle the failure of the data nodes?
What is the InputFormat ?
How a task is scheduled by a jobtracker?
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