Who is a 'user' in HDFS?
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On what basis Namenode will decide which datanode to write on?
What are the different methods to run Spark over Apache Hadoop?
What is the default replication factor?
What is HDFS block size and what did you chose in your project?
How does master slave architecture in the hadoop?
How Mapper is instantiated in a running job?
What is Apache Hadoop? Why is Hadoop essential for every Big Data application?
How a task is scheduled by a jobtracker?
What does job conf class do?
How would you tackle counting words in several text documents?
What is the difference between traditional RDBMS and Hadoop?
What is crontab? Explain with suitable example?
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