What are the stable versions of Hadoop?
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What is the purpose of RawComparator interface?
What are the core components of Apache Hadoop?
Explain what is sqoop in Hadoop ?
Are Namenode and job tracker on the same host?
What is structured data?
What is IdentityMapper?
Why do we use HDFS for applications having large data sets and not when there are lot of small files?
What is the process to change the files at arbitrary locations in HDFS?
What is nlineoutputformat?
What is speculative execution in Hadoop?
What are the basic available commands in Hadoop sqoop ?
Explain the overview of hadoop history breifly?