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Apache HDFS Hadoop Distributed File System Interview Questions
Questions Answers Views Company eMail

What is HDFS?

 26

Why HDFS?

 24

How to Delete file from HDFS?

 44

How to keep files in HDFS?

 40

How is NFS different from HDFS?

 34

Why is block size large in Hadoop?

 42

Distinguish HDFS Block and Input Unit?

 24

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

 58

What happens when two users try to access to the same file in HDFS?

 51

Does the HDFS go wrong? If so, how?

 34

Why is HDFS only suitable for large data sets and not the correct tool to use for many small files?

 39

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

 110

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

 81

How to read file in HDFS?

 34

When NameNode enter in Safe Mode?

 25

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

How is hdfs block size different from traditional file system block size?

38

Define HDFS and talk about their respective components?

36

Can you define a block and block scanner in hdfs?

33

What is the difference between namenode, backup node and checkpoint namenode?

38

Data node block size in HDFS, why 64MB?

30




How to access HDFS?

32

In HDFS, how Name node determines which data node to write on?

32

Explain how HDFS communicates with Linux native file system?

26

How does hdfs give great throughput?

22

What is HDFS?

26

How to read file in HDFS?

34

Why HDFS?

24

How data or file is written into HDFS?

37

What are the key features of HDFS?

26

What is a block in Hadoop HDFS? What should be the block size to get optimum performance from the Hadoop cluster?

23

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