How to specify more than one path for storage in Hadoop?

506

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What is a single point of failure in Hadoop 1 and how is it resolved in Hadoop 2?

587

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What is JPS? Why is it used in Hadoop?

525

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What is the key difference between NameNode and DataNode in Hadoop?

488

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What is Small File Problem in Hadoop? How can it be resolved?

538

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Ideally what should be replication factor in a Hadoop cluster?

518

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What is NameNode? How NameNode tackle Datanode failures in Hadoop?

468

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How often DataNode send heartbeat to NameNode in Hadoop?

536

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What is Mapper? How can we compress Mapper output in Hadoop?

519

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What is Rack Awareness? What is its need in Hadoop?

532

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What is Erasure Coding in Hadoop?

506

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Why do we need Hadoop Archives? How is it created?

563

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What is Slot in Hadoop v1? Why was it removed from Hadoop v2?

515

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What is CAP Theorem? What aspects does Hadoop support from this theorem?

471

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Why do we need Hadoop?

520

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