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Hadoop Interview Questions and Answers
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Questions
Hadoop
+3
votes
Which of the following are not possible in Hive?
asked
Jun 29, 2021
in
Hadoop
by
Robindeniel
hive
+2
votes
UDFs can be applied only in FOREACH statements in Pig.
asked
Jun 29, 2021
in
Hadoop
by
Robindeniel
udf-statement
+2
votes
Which of following is the return data type of Filter UDF?
asked
Jun 29, 2021
in
Hadoop
by
Robindeniel
udf-filter
+2
votes
Which of the following constructs are valid Pig Control Structures?
asked
Jun 29, 2021
in
Hadoop
by
Robindeniel
pig-control-structures
+1
vote
Data can be supplied to PigUnit tests from:
asked
Jun 29, 2021
in
Hadoop
by
Robindeniel
pigunit
+1
vote
DUMP Statement writes the output in a file
asked
Jun 29, 2021
in
Hadoop
by
Robindeniel
dump-statement
+1
vote
The schema of a relation can be examined through:
asked
Jun 29, 2021
in
Hadoop
by
Robindeniel
schema-relation
+1
vote
Parameters could be passed to Pig scripts from:
asked
Jun 29, 2021
in
Hadoop
by
Robindeniel
pig-scripts
+1
vote
Maximum size allowed for small dataset in replicated join is:
asked
Jun 29, 2021
in
Hadoop
by
Robindeniel
replicated-joins
+1
vote
Replicated joins are useful for dealing with data skew.
asked
Jun 29, 2021
in
Hadoop
by
Robindeniel
replicated-joins
+1
vote
Hadoop is open source.
asked
Jun 26, 2021
in
Hadoop
by
SakshiSharma
hadoop-
open-source
+1
vote
Which of the following are the core components of Hadoop?
asked
Jun 26, 2021
in
Hadoop
by
SakshiSharma
hadoop-component
0
votes
Wire Encryption deals with securing data while it is at rest.
asked
Jan 26, 2021
in
Hadoop
by
SakshiSharma
wire-encryption
security
data-security
0
votes
Lower the opacity value, the more opaque it is.
asked
Jan 17, 2021
in
Hadoop
by
SakshiSharma
#opacity-value
0
votes
Which component enforces a common set of policies across multiple data access paths in Hadoop?
asked
Jan 17, 2021
in
Hadoop
by
SakshiSharma
#hadoop-path
0
votes
Which is the default HTTP Port for Apache NiFi?
asked
Jan 7, 2021
in
Hadoop
by
SakshiSharma
#apache-nifi
0
votes
Which of the following helps to enable pig scripts?
asked
Dec 6, 2020
in
Hadoop
by
rajeshsharma
#pig-scripts
#pig-features
0
votes
What are the different components of a Hive architecture?
asked
Dec 3, 2020
in
Hadoop
by
sharadyadav1986
#hive-architecture
#hive-components
0
votes
What happens if requested memory or CPU cores go beyond the size of container allocation?
asked
Dec 3, 2020
in
Hadoop
by
sharadyadav1986
#yarn-memory
#yarn-cpu
0
votes
In a cluster of 10 DataNodes, each having 16 GB RAM and 10 cores, what would be the total processing capacity of the cluster?
asked
Dec 3, 2020
in
Hadoop
by
sharadyadav1986
#datanoes
#yarn-cluster
#hadoop-cluster
clusters
0
votes
What happens if a ResourceManager fails while executing an application in a high availability cluster?
asked
Dec 3, 2020
in
Hadoop
by
sharadyadav1986
#yarn-resource-manager
#yarn-availability
#yarn-cluster
0
votes
What are the different schedulers available in YARN?
asked
Dec 3, 2020
in
Hadoop
by
sharadyadav1986
#yarn-scheduler
scheulers
0
votes
Can we have more than one ResourceManager in a YARN-based cluster?
asked
Dec 3, 2020
in
Hadoop
by
sharadyadav1986
#yarn-resource-manager
#yarn-cluster
0
votes
Write the YARN commands to check the status of an application and kill an application.
asked
Dec 3, 2020
in
Hadoop
by
sharadyadav1986
#yarn-commands
#yarn-applications
0
votes
Which of the following has replaced JobTracker from MapReduce v1?
asked
Dec 3, 2020
in
Hadoop
by
sharadyadav1986
#jobtracker
#mapreduce-v1
0
votes
Explain how YARN allocates resources to an application with the help of its architecture.
asked
Dec 3, 2020
in
Hadoop
by
sharadyadav1986
#yarn-resources
#yarn-application
0
votes
What benefits did YARN bring in Hadoop 2.0 and how did it solve the issues of MapReduce v1?
asked
Dec 3, 2020
in
Hadoop
by
sharadyadav1986
#yarn-hadoop
#mapreduce-v1
0
votes
Can we write the output of MapReduce in different formats?
asked
Dec 3, 2020
in
Hadoop
by
sharadyadav1986
#mapreduce
#mapreduce-formats
0
votes
What happens when a node running a map task fails before sending the output to the reducer?
asked
Nov 24, 2020
in
Hadoop
by
rahuljain1
#reducer-task-fail
#node-map-task-fails
0
votes
How can you set the mappers and reducers for a MapReduce job?
asked
Nov 24, 2020
in
Hadoop
by
rahuljain1
#reducers
#mapreduce-reducers
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