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How can we check whether namenode is working or not?


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More Apache Hadoop Interview Questions

What do slaves consist of?

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What is Writable & WritableComparable interface?

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how to share the metastore within multiple users?

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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?

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How to change from su to cloudera?

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Explain the basic architecture of Hadoop?

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Do we need to give a password, even if the key is added in ssh?

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How indexing is done in HDFS?

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