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Hadoop Interview Questions and Answers
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Questions
Hadoop
0
votes
How many instances of Jobtracker can run on a Hadoop Cluster?
asked
Jun 21, 2023
in
Hadoop
by
sharadyadav1986
jobtracker
hadoopcluster
0
votes
What is a Balancer in HDFS?
asked
Jun 18, 2023
in
Hadoop
by
Robindeniel
balancer
hdfs
0
votes
What is a Backup Node in HDFS?
asked
Jun 18, 2023
in
Hadoop
by
Robindeniel
backup
node
0
votes
What data is stored in a HDFS NameNode?
asked
Jun 18, 2023
in
Hadoop
by
Robindeniel
hdfs
namenode
0
votes
What are the default port numbers on which Nodes run in Hadoop?
asked
Jun 18, 2023
in
Hadoop
by
Robindeniel
hadoop-port
nodes
0
votes
What is the difference between Nodes in HDFS?
asked
Jun 18, 2023
in
Hadoop
by
Robindeniel
nodes
hdfs
0
votes
What is Hadoop Streaming?
asked
Jun 18, 2023
in
Hadoop
by
Robindeniel
hadoop
streaming
0
votes
What are the main components of a Hadoop Application?
asked
Jun 18, 2023
in
Hadoop
by
Robindeniel
components-hadoop-application
0
votes
what are the different Job control options specified by MapReduce.
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
mapreduce
0
votes
Define the term Partitioner and why is it used?
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
parrtitioner
0
votes
Define the term Text Input Format in MapReduce?
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
text
format
0
votes
Illustrate the differences between MapReduce and PIG?
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
mapreduce
0
votes
What do you think will happen when a data node fails?
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
node-fails
0
votes
Explain what you understand by the term NameNode in Hadoop?
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
namenode
0
votes
Illustrate the differences between a reducer and a combiner?
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
reducer
combiner
0
votes
What do you know about Input Format?
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
hadoop
input-format
0
votes
Briefly list out the different configuration parameters that are required to perform the job of the MapReduce framework?
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
hadoop
0
votes
List out the main components of MapReduce?
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
mapreduce
0
votes
Why is MapReduce used?
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
mapreduce
0
votes
Explain job scheduling through JobTracker.
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
job-tracker
0
votes
Illustrate the differences between HDFS block and InputSplit?
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
hdfs-block
0
votes
Briefly explain about Identity Mapper and Chain Mapper in MapReduce?
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
identity-mappe
0
votes
What do you know about MapReduce and how does it work?
asked
Feb 17, 2023
in
Hadoop
by
sharadyadav1986
mapeduce
+1
vote
How many formats of SequenceFile are present in Hadoop I/O?
asked
Jan 13, 2023
in
Hadoop
by
john ganales
hadoop
+1
vote
Hadoop is distributed under .................
asked
Jan 13, 2023
in
Hadoop
by
john ganales
hadoop
+1
vote
The commercial applications of Hadoop include ...............
asked
Jan 13, 2023
in
Hadoop
by
john ganales
commercial-applications
+1
vote
The heartbeat signal are sent from ................
asked
Jan 13, 2023
in
Hadoop
by
john ganales
heartbeat-signal
hadoop
+2
votes
Which of the following option is used for machine learning on Hadoop?
asked
Jan 13, 2023
in
Hadoop
by
john ganales
hadoop
machine-learning
+1
vote
Which of the following option allows users to read or write Avro data as Hive tables?
asked
Jan 13, 2023
in
Hadoop
by
john ganales
hadoop
hive-tables
0
votes
What is the shortcut for DUMP operator?
asked
Jan 13, 2023
in
Hadoop
by
john ganales
dump-operator
hadoop
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