Apache HDFS Hadoop Distributed File System Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apache HDFS Hadoop Distributed File System Interview Questions

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What is the problem in having lots of small files in hdfs?

Why rack awareness algorithm is used in hadoop?

Can you change the block size of hdfs files?

Explain about the indexing process in hdfs?

Explain what is difference between an input split and hdfs block?

Replication causes data redundancy then why is pursued in hdfs?

Since the data is replicated thrice in hdfs, does it mean that any calculation done on one node will also be replicated on the other two?

If a particular file is 50 mb, will the hdfs block still consume 64 mb as the default size?

What is the difference between an hdfs block and input split?

Explain hdfs?

Explain the key features of hdfs?

How does hdfs get a good throughput?

Explain how indexing is done in hdfs?

Explain the difference between mapreduce engine and hdfs cluster?

Explain the difference between an hdfs block and input split?

Un-Answered Questions { Apache HDFS Hadoop Distributed File System }

How data or file is read in Hadoop HDFS?

Can you explain about the indexing process in hdfs?

Why HDFS stores data using commodity hardware despite the higher chance of failures?

Can you modify the file present in hdfs?

Explain the difference between nas and hdfs?

What do you mean by meta information in hdfs? List the documents related to metadata.

Define hadoop archives?

What is the difference betwaeen mapreduce engine and hdfs cluster?

What do you mean by meta information in hdfs?

How does data transfer happen from hdfs to hive?

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How does HDFS Index Data blocks? Explain.

What is non-dfs used in hdfs web console

What is Hadoop HDFS – Hadoop Distributed File System?

What is the optimal block size in HDFS?

What is the problem in having lots of small files in hdfs?

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