What is small file problem in hadoop?
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Explain the master class and the output class do?
Define a commodity hardware? Does commodity hardware include ram?
Define a job tracker?
What is a speculative execution in Apache Hadoop MapReduce?
Explain what if rack 2 and datanode fails?
Which are the two types of 'writes' in HDFS?
If a data Node is full how it's identified?
Explain the basic difference between traditional rdbms and hadoop?
what are Task Tracker and Job Tracker?
What do the master class and the output class do?
What is HDFS High Availability?
What is a task instance in hadoop? Where does it run?
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