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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?

 40

Why HDFS?

 36

How to Delete file from HDFS?

 57

How to keep files in HDFS?

 53

How is NFS different from HDFS?

 49

Why is block size large in Hadoop?

 52

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?

 77

Does the HDFS go wrong? If so, how?

 42

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

 55

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

 183

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

 142

How to read file in HDFS?

 50

When NameNode enter in Safe Mode?

 35

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

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

50

What does hdfs mean?

39

Why rack awareness algorithm is used in hadoop?

39

Distinguish HDFS Block and Input Unit?

43

Suppose there is file of size 514 mb stored in hdfs (hadoop 2.x) using default block size configuration and default replication factor. Then, how many blocks will be created in total and what will be the size of each block?

125

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

35

What is the difference between MapReduce engine and HDFS cluster?

96

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

51

Can we change the document present in hdfs?

35

Can you define a block and block scanner in hdfs?

47

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

46

How would you import data from MYSQL into HDFS ?

38

How hdfs is different from traditional file systems?

47

Define HDFS and talk about their respective components?

49

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

36

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