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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?

195

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


Post New Apache HDFS Hadoop Distributed File System Questions

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

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

40


How to change the replication factor of data which is already stored in HDFS?

43


What is a task tracker?

54


Does HDFS allow a client to read a file which is already opened for writing?

47


What is the difference between nas (network attached storage) and hdfs?

54


Why HDFS performs replication, although it results in data redundancy in Hadoop?

47


How one can change Replication factor when Data is already stored in HDFS

49


What is throughput? How does hdfs provides good throughput?

67


Which one is the master node in HDFS? Can it be commodity hardware?

53


Can you explain about the indexing process in hdfs?

43


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

81


What are the key features of HDFS?

46


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

66


Explain what happens if, during the PUT operation, HDFS block is assigned a replication factor 1 instead of the default value 3?

49


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

43