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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Write command to copy a file from HDFS to linux(local).

How to create directory in HDFS?

How to Delete directory from HDFS?

What are the main features of hdfssite.xml?

Write the command to copy a file from linux to hdfs?

How to copy file from HDFS to local?

How much Metadata will be created on NameNode in Hadoop?

What do you mean by metadata in Hadoop?

How to Delete directory and files recursively from HDFS?

How does HDFS Index Data blocks? Explain.

How to access HDFS?

Explain the process that overwrites the replication factors in HDFS?

Difference Between Hadoop and HDFS?

How would you import data from MYSQL into HDFS ?

Define HDFS and talk about their respective components?

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

What is secondary namenode?

How does HDFS Index Data blocks? Explain.

Can multiple clients write into an HDFS file concurrently?

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?

Is namenode also a commodity?

Would you be able to change the block size of hdfs files?

How is NFS different from HDFS?

What are the different file permissions in the HDFS for files or directory levels?

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What should be the HDFS Block size to get maximum performance from Hadoop cluster?

Describe HDFS Federation?

What is a rack awareness algorithm?

What do you mean by block scanner in hdfs?

Explain the hdfs architecture and list the various hdfs daemons in hdfs cluster?

How to Delete directory and files recursively from HDFS?

What do you mean by the High Availability of a NameNode in Hadoop HDFS?

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