Explain what is the purpose of RecordReader in Hadoop?
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Explain what is sqoop in Hadoop ?
What is difference between regular file system and HDFS?
What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?
Explain how input and output data format of the hadoop framework?
How is hadoop different from other data processing tools?
What is high availability in hadoop?
Explain how can we change the split size if our commodity hardware has less storage space?
What is inputsplit in hadoop? Explain.
shouldn't DFS be able to handle large volumes of data already?
Is hadoop a database?
Where is the Mapper Output stored?
Should we use RAID in Hadoop or not?
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