Answer / Ravi Dutta

Hadoop is an open-source software framework for distributed processing of large data sets across clusters of computers. HDFS (Hadoop Distributed File System) is a part of the Hadoop ecosystem, responsible for managing data storage in Hadoop. While Hadoop includes other components like MapReduce and YARN, HDFS focuses solely on data storage.

What is a block in HDFS? what is the default size in Hadoop 1 and Hadoop 2? Can we change the block size?

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Replication causes data redundancy then why is is pursued in HDFS?

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Replication causes data redundancy then why is pursued in hdfs?

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How to format the HDFS? How frequently it will be done?

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What is Hadoop HDFS – Hadoop Distributed File System?

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Can you explain about the indexing process in hdfs?

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What do you mean by the high availability of a namenode?

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

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How to copy a file into HDFS with a different block size to that of existing block size configuration?

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What happens if the block on Hadoop HDFS is corrupted?

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What is hdfs block size?

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Will various customers write into an hdfs record simultaneously?

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