What is Apache Hadoop? Why is Hadoop essential for every Big Data application?
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What is the difference between HDFS and NAS ?
What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?
Define tasktracker.
Do we need to give a password, even if the key is added in ssh?
Input Split & Record Reader and what they do?
Which data storage components are used by hadoop?
What is InputSplit and RecordReader?
What are different types of filesystem?
Explain the overview of hadoop history breifly?
How to change replication factor of files already stored in HDFS?
What is nlineoutputformat?
What is difference between split and block in hadoop?
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