What is a speculative execution in Apache Hadoop MapReduce?


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More Apache Hadoop Interview Questions

What is Disk Balancer in Apache Hadoop?

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What hadoop does in safe mode?

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How many Daemon processes run on a Hadoop system?

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What is a “Distributed Cache” in Apache 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 to restart Namenode?

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Why do we use Hadoop?

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How a task is scheduled by a jobtracker?

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What is a Combiner?

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Explain the basic architecture of Hadoop?

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What happens in a textinputformat?

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what is the default replication factor in HDFS?

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