Answer / Amardeep Singh

The Small File Problem refers to the inefficiency in handling a large number of small files in Hadoop, which leads to increased metadata overhead and excessive I/O operations. This issue can be mitigated by consolidating small files into larger ones using tools like CombineFileInputFormat or implementing custom solutions.

Is it possible to provide multiple input to Hadoop? If yes then how?

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What is fsck?

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What are the benefits yarn brings in to hadoop?

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How do you overwrite replication factor?

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What are the port numbers of task tracker?

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Tell me some major benefits of Hadoop?

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Is it possible to provide multiple input to Hadoop? If yes then how can you give multiple directories as input to the Hadoop job?

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What sorts of actions does the job tracker process perform?

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What is configured in /etc/hosts and what is its role in setting Hadoop cluster?

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

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What is the difference between namenode and datanode in hadoop?

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What is pseudo-distributed mode?

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