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  1. Categories >> Software >> Big Data >> Hadoop >> Apache Hadoop
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What is the main purpose of HDFS fsck command?

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More Apache Hadoop Interview Questions

How can you overwrite the replication factors in HDFS?

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Name some companies that use Hadoop?

0 Answers   Airtel,

What is Hadoop?

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Why are the number of splits equal to the number of maps?

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What is the difference between a Hadoop and Relational Database and Nosql?

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What are the modes in which Apache Hadoop run?

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What is Writable & WritableComparable interface?

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How to change Replication Factor For below cases ?

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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?

0 Answers   Twitter,

What is output format in hadoop?

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How a task is scheduled by a jobtracker?

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What are combiners and its purpose?

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