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Hadoop Interview Questions and Answers
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Questions
Hadoop
+3
votes
Q: How is NFS different from HDFS?
asked
Nov 25, 2022
in
Hadoop
by
john ganales
hdfs
hadoop
+3
votes
Q: How do you deploy a Big Data solution?
asked
Nov 25, 2022
in
Hadoop
by
john ganales
big-data-solution
hadoop
+2
votes
Q: How can Big Data add value to businesses?
asked
Nov 25, 2022
in
Hadoop
by
john ganales
big-data
+3
votes
Q: Explain the core methods of a Reducer.
asked
Nov 25, 2022
in
Hadoop
by
john ganales
reducer
hadoop
+3
votes
Q: What are some of the data management tools used with Edge Nodes in Hadoop?
asked
Nov 25, 2022
in
Hadoop
by
john ganales
data-management-tools
hadoop
edge-nodes
+3
votes
Q: What are Edge Nodes in Hadoop?
asked
Nov 25, 2022
in
Hadoop
by
john ganales
edge-nodes
hadoop
+3
votes
Q: What do you mean by indexing in HDFS?
asked
Nov 25, 2022
in
Hadoop
by
john ganales
hadoop
indexing
+3
votes
Q: What are the different features of Hadoop.
asked
Nov 25, 2022
in
Hadoop
by
john ganales
hadoop-features
hadoop
+3
votes
Q: What is the main difference between an “Input Split” and “HDFS Block”?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
input-split
hdfs-block
hadoop
cluster
0
votes
Q: What are the essential features of Hadoop?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop-features
+1
vote
Q: What is Hadoop and its components?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop
components
0
votes
Q: What is Big Data?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
big-data
hadoop
0
votes
Q: What is speculative execution?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
speculative-hadoop
cluster
+1
vote
Q: How many times do you need to reformat the namenode?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop
namenode
format-namenode
+1
vote
Q: Name some of the essential Hadoop tools for effective working with Big Data?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop-tools
big-data
0
votes
Q: What is the use of ‘jps’ command?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop
jps-command
0
votes
Q: What is a checkpoint?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop
checkpoint
0
votes
Q: What is distcp?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop
distcp
+1
vote
Q: Is there any standard method to deploy Hadoop?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop
deployment-hadoop
+1
vote
Q: Is it possible to copy files between different clusters? If yes, How can you achieve this?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop
copy-files
cluster
+1
vote
Q: What happens when the NameNode is down?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop
namenode
+1
vote
Q: Explain how you will restart a NameNode?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop
namenode
0
votes
Q: What is the Importance of the namenode?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop-
namenode
+1
vote
Q: What are the Hadoop shell commands can use for copy operation?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop-shell
shell-command
+1
vote
Q: What do you need to do as Hadoop admin after adding new datanodes?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop
datanodes
+1
vote
Q: How would you deploy different components of Hadoop in production?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop
production
component
+1
vote
Q: What are the important hardware requirements for a Hadoop cluster?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop-cluster
hardware
0
votes
Q: What modes can Hadoop code be run in?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
hadoop
modes
0
votes
Q: Which OS are supported by Hadoop deployment?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
operating-system
hadoop-deployment
0
votes
Q: What daemons are needed to run a Hadoop cluster?
asked
Oct 29, 2022
in
Hadoop
by
SakshiSharma
daemons
hadoop-cluster
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