What is a block and block scanner in HDFS?


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More Apache Hadoop Interview Questions

Is hadoop a memory?

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Virtual Box & Ubuntu Installation?

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How to enable recycle bin or trash in hadoop?

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What is oozie in hadoop?

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Does the hdfs client decide the input split or namenode?

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What if a namenode has no data?

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Explain the core components of hadoop?

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What is a heartbeat in HDFS?

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Is it possible to provide multiple inputs to hadoop? If yes, explain.

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did you maintain the hadoop cluster in-house or used hadoop in the cloud?

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How is security achieved in Apache Hadoop?

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What is a speculative execution in Apache Hadoop MapReduce?

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