What is a 'block' in HDFS?
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What does the command mapred.job.tracker do?
What is Rack Awareness in Apache Hadoop?
Explain use cases where SequenceFile class can be a good fit?
Is it necessary to write jobs for hadoop in the java language?
Explain the features of fully distributed mode?
what are Task Tracker and Job Tracker?
What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?
Can we do online transactions(oltp) using hadoop?
Define fault tolerance?
Where is the Mapper Output intermediate kay-value data stored ?
On what basis Namenode will decide which datanode to write on?
How the HDFS Blocks are replicated?
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