What happens when two clients try to access the same file in the hdfs?
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What is a commodity hardware? Does commodity hardware include RAM?
What is the key difference between NameNode and DataNode in Hadoop?
How namenode handles data node failures?
What do you know about yarn?
What is the command to change the replication factor ?
How does speculative execution work in Hadoop?
How NameNode tackle Datanode failures in Hadoop?
What are the main features and Characteristics of Hadoop which makes it the most popular and powerful Big Data tool?
What mode(s) can hadoop code be run in?
How to add/delete a Node to the existing cluster?
Clarify what a task tracker is in hadoop?
What is configured in /etc/hosts and what is its role in setting Hadoop cluster?
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