What happens in a textinputformat?
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What are the network requirements for using hadoop?
Explain what is sqoop in Hadoop ?
Can NameNode and DataNode be a commodity hardware?
Explain the core components of hadoop?
How many instances of a jobtracker run on hadoop cluster?
What alternate way does HDFS provides to recover data in case a Namenode
How to enable trash/recycle bin in hadoop?
What are the modes in which Apache Hadoop run?
How many maximum jvm can run on a slave node?
What is structured data?
explain Metadata in Namenode?
Have you ever used Counters in Hadoop. Give us an example scenario?
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