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?

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Explain the difference between an hdfs block and input split?

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

How does HDFS Index Data blocks? Explain.

How is indexing done in HDFS?

What are the difference between of the “HDFS Block” and “Input Split”?

Can multiple clients write into a Hadoop HDFS file concurrently?

What is active and passive NameNode in HDFS?

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

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If data is present in HDFS and RF is defined, then how can we change Replication Factor?

Is namenode also a commodity?

Compare hbase vs hdfs?

What is a block?

Define data integrity?

What do you mean by block scanner in hdfs?

What is HDFS?

How to split single hdfs block into partitions rdd?

Can you explain about the indexing process in hdfs?

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