How to enable/configure the compression of map output data in hadoop?

768

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What hadoop does in safe mode?

656

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What is inputformat in hadoop?

751

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Explain how input and output data format of the hadoop framework?

717

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when hadoop enter in safe mode?

749

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How to enable recycle bin or trash in hadoop?

708

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Whats is distributed cache in hadoop?

682

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what should be the ideal replication factor in hadoop?

656

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What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?

727

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How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?

734

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

735

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What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?

673

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What is partitioning?

473

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Can we change the file cached by distributed cache

433

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Why would nosql be better than using a sql database? And how much better is it?

485

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