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How many instances of tasktracker run on a hadoop cluster?


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More Apache Hadoop Interview Questions

What is Apache Hadoop? Why is Hadoop essential for every Big Data application?

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What is 'Key value pair' in HDFS?

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What is a task instance in hadoop? Where does it run?

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What is the full form of fsck?

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How do you categorize a big data?

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Which one is default InputFormat in Hadoop ?

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Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?

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Explain the basic difference between traditional rdbms and hadoop?

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What is zookeeper in hadoop?

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Explain use cases where SequenceFile class can be a good fit?

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Is hadoop obsolete?

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Define a namenode?

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