Answer / Nidhi Paswan

To transfer data between different HDFS clusters, you can utilize Data Transfer Protocol (DTP) or DistCP. DTP is a simple, efficient method for large-scale data transfers between HDFS and other storage systems. DistCP, on the other hand, offers more complex functionality like filtering and partitioning during the transfer process.

What happens when two clients try to access the same file on HDFS?

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What are the key features of HDFS?

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Define hadoop archives? What is the command for archiving a group of files in hdfs.

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If the source data gets updated every now and then, how will you synchronize the data in hdfs that is imported by sqoop?

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How will you perform the inter cluster data copying work in hdfs?

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If I create a folder in HDFS, will there be metadata created corresponding to the folder? If yes, what will be the size of metadata created for a directory?

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What is active and passive NameNode in HDFS?

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Why rack awareness algorithm is used in hadoop?

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Why is Reading done in parallel and writing is not in HDFS?

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How to access HDFS?

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How data or a file is written into hdfs?

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What is the procedure to create users in HDFS and how to allocate Quota to them?

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