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How is hadoop different from other data processing tools?
Define tasktracker.
Explain what is sqoop in Hadoop ?
What happens in a textinputformat?
How is security achieved in Apache Hadoop?
Did you ever built a production process in hadoop ? If yes then what was the process when your hadoop job fails due to any reason?
What is inputsplit in hadoop? Explain.
Explain the overview of hadoop history breifly?
What is the difference between hadoop and other data processing tools?
How we can take Hadoop out of Safe Mode?
How is HDFS fault tolerant?
What is HDFS Block size? How is it different from traditional file system block size?
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