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What is the Use of SSH in Hadoop ?
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Which command is used for the retrieval of the status of daemons running the hadoop cluster?
Data Engineer Given a list of followers in the format:123, 345234, 678345, 123…Where column one is the ID of the follower and column two is the ID of the followee. Find all mutual following pairs (the pair 123, 345 in the example above). How would you use Map/Reduce to solve the problem when the list does not fit in memory?
How will you make changes to the default configuration files?
What are the site-specific configuration files in Hadoop?
What is the Use of SSH in Hadoop ?
Define a task tracker?
What are the different types of Znodes?
Explain the hadoop-core configuration?
Where is the Mapper Output stored?
What is a checkpoint?
Explain what is the purpose of RecordReader in Hadoop?
What are the basic available commands in Hadoop sqoop ?
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