What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?


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More Apache Hadoop Interview Questions

What are the network requirements for using hadoop?

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What are the steps to submit a Hadoop job?

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Should we use RAID in Hadoop or not?

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What is compute and Storage nodes?

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What is the meaning of speculative execution in Hadoop? Why is it important?

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How to resolve small file problem in hdfs?

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Explain why do we need hadoop?

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Mention what is the use of Context Object?

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What is Safemode in Apache Hadoop?

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Explain what if rack 2 and datanode fails?

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Explain the features of fully distributed mode?

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What is the purpose of RawComparator interface?

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