On which port does ssh work?
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Explain the master class and the output class do?
Why we cannot do aggregation (addition) in a mapper? Why we require reducer for that?
Where is the Mapper Output stored?
Explain what is the purpose of RecordReader in Hadoop?
What is crontab? Explain with suitable example?
What are the different types of Znodes?
What is the difference between SQL and NoSQL?
How to enable recycle bin in hadoop?
What do you mean by taskinstance?
What are different hdfs dfs shell commands to perform copy operation?
What are the four characteristics of Big Data?
What do masters consist of?
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