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Big Data | Hadoop Interview Questions and Answers
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Questions
Big Data | Hadoop
0
votes
Q: How to write a custom partitioner for a Hadoop MapReduce job?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#hadoop-partitioner
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: Explain about the partitioning, shuffle and sort phase
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#partitioning
#shuffle
#sort-phase
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What are the core methods of a Reducer?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#core-methods
#reducer-methods
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: Explain the usage of Context Object.
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#context-object
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What do you understand by edge nodes in Hadoop?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#hadoop-edge
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: Whenever a client submits a hadoop job, who receives it?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#hadoop-client
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What happens when a user submits a Hadoop job when the Job Tracker is down- does the job get in to hold or does it fail.
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#hadoop-job-tracker
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What happens when a user submits a Hadoop job when the NameNode is down- does the job get in to hold or does it fail.
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#hadoop-jobs
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What happens to a NameNode that has no data?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#namenode-data
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What is a rack awareness and on what basis is data stored in a rack?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#rack-awareness
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What is the process to change the files at arbitrary locations in HDFS?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#hdfs-locations
Bigdata-questions-answers
Hadoop-questions-answers
+1
vote
Q: Explain what happens if during the PUT operation, HDFS block is assigned a replication factor 1 instead of the default value 3.
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#put-operation
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: Explain the difference between NAS and HDFS.
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#nas-vs-hdfs
#nas
#hdfs
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: How can you overwrite the replication factors in HDFS?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#hdfs-replication
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: Explain about the process of inter cluster data copying.
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#cluster-data
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What is the port number for NameNode, Task Tracker and Job Tracker?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#namenode-port
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What is commodity hardware?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#commodity-hardware
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: Explain the difference between NameNode, Backup Node and Checkpoint NameNode.
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#namenode
#backup-node
#checkpoint-namenode
Bigdata-questions-answers
Hadoop-questions-answers
+1
vote
Q: What is a block and block scanner in HDFS?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#hdfs-block-scanner
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What is Big Data?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#what-is-big-data
#explain-big-data
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: How will you choose various file formats for storing and processing data using Apache Hadoop ?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#apache-hadoop
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What are the steps involved in deploying a big data solution?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#big-data-solutions
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What are the most commonly defined input formats in Hadoop?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#hadoop-formats
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What is the best hardware configuration to run Hadoop?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#hadoop-configuration
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What are the main components of a Hadoop Application?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#hadoop-applications
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: On what concept the Hadoop framework works?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#hadoop-framework
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: Differentiate between Structured and Unstructured data.
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#structured-data
#unstructured-data
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: Name some companies that use Hadoop.
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#hadoop-compnies
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: How big data analysis helps businesses increase their revenue? Give example.
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#big-data-analysis
Bigdata-questions-answers
Hadoop-questions-answers
0
votes
Q: What do the four V’s of Big Data denote?
asked
Jan 26, 2020
in
Big Data | Hadoop
by
rajeshsharma
#big-data-v
Bigdata-questions-answers
Hadoop-questions-answers
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