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  1. Categories >> Software >> Big Data >> Hadoop >> Apache HDFS Hadoop Distributed File System
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Apache HDFS Hadoop Distributed File System Interview Questions
Questions Answers Views Company eMail

What is HDFS?

 42

Why HDFS?

 36

How to Delete file from HDFS?

 59

How to keep files in HDFS?

 55

How is NFS different from HDFS?

 49

Why is block size large in Hadoop?

 56

Distinguish HDFS Block and Input Unit?

 43

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

 70

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

 79

Does the HDFS go wrong? If so, how?

 46

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

 61

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

 185

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

 146

How to read file in HDFS?

 50

When NameNode enter in Safe Mode?

 38

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

What is the difference between input split and hdfs block?

91

What is a rack awareness algorithm?

58

How to Delete file from HDFS?

59

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?

41

While processing data from hdfs, does it execute code near data?

46

What is Secondary NameNode in Hadoop HDFS?

69

What are file permissions in HDFS and how HDFS check permissions for files or directory?

36

What is NameNode and DataNode in HDFS?

49

How to use hdfs put command for data transfer from flume to hdfs?

58

Define hadoop archives?

27

Why rack awareness algorithm is used in hadoop?

41

If I create a folder in HDFS, will there be metadata created corresponding to the folder? If yes, what will be the size of metadata created for a directory?

38

What is a block in HDFS, why block size 64MB?

55

Can we change the document present in hdfs?

41

Mention what is the best way to copy files between hdfs clusters?

73

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