Is hadoop obsolete?
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What are the modes in which Apache Hadoop run?
How the Client communicates with HDFS?
What is a heartbeat in HDFS?
Can we call vms as pseudos?
Is secondary namenode a substitute to the namenode?
Define a datanode?
Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?
What is the function of ApplicationMaster?
How would you tackle counting words in several text documents?
What is the purpose of RawComparator interface?
Explain what if rack 2 and datanode fails?
What are the network requirements for using hadoop?