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What is a Task instance in Hadoop? Where does it run?1
What is the process to change the files at arbitrary locations in HDFS?
What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?
What are the four characteristics of Big Data?
Is a job split into maps?
What is a spill factor with respect to the ram?
What is Hadoop?
How Mapper is instantiated in a running job?
What is crontab? Explain with suitable example?
What are the additional benefits YARN brings in to Hadoop?
What is the difference between a Hadoop and Relational Database and Nosql?
How is the distance between two nodes defined in Hadoop?