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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?

 46

Why HDFS?

 45

How to Delete file from HDFS?

 65

How to keep files in HDFS?

 65

How is NFS different from HDFS?

 55

Why is block size large in Hadoop?

 64

Distinguish HDFS Block and Input Unit?

 49

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

 81

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

 83

Does the HDFS go wrong? If so, how?

 54

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

 70

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

 193

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

 157

How to read file in HDFS?

 56

When NameNode enter in Safe Mode?

 50

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

Define data integrity?

42

How to perform the inter-cluster data copying work in HDFS?

50

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

80

What happens if the block in HDFS is corrupted?

43

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

37

How is NFS different from HDFS?

55

What do you mean by the high availability of a namenode? How is it achieved?

47

What is throughput? How does hdfs provides good throughput?

67

Can we have different replication factor of the existing files in hdfs?

64

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

69

How to Delete directory and files recursively from HDFS?

94

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?

42

What is a block in HDFS? what is the default size in Hadoop 1 and Hadoop 2? Can we change the block size?

72

When NameNode enter in Safe Mode?

50

Replication causes data redundancy then why is is pursued in HDFS?

59

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