What is zookeeper in hadoop?


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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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Can you give us some more details about ssh communication between masters and the slaves?

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How does an hadoop application look like or their basic components?

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Have you ever used Counters in Hadoop. Give us an example scenario?

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What do you know about sequencefileinputformat?

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What happens to a namenode, when job tracker is down?

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Can we call vms as pseudos?

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What do the master class and the output class do?

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What does /var/hadoop/pids do?

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How blocks are distributed among all data nodes for a particular chunk of data?

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What do you mean by taskinstance?

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What is safe mode in Hadoop?

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