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Top 100+ questions and answers in HDFS
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Top 100+ questions and answers in HDFS
0
votes
Q: Why does Hive not store metadata information in HDFS?
answered
Dec 3, 2020
in
HDFS
by
sharadyadav1986
#hive-data-store
#hdfs-information
#hdfs-metadata
0
votes
Q: Is there any way to change the replication of files on HDFS after they are already written to HDFS?
answered
Nov 24, 2020
in
HDFS
by
sharadyadav1986
#hdfs-replication
0
votes
Q: Who takes care of replication consistency in a Hadoop cluster and what do under/over replicated blocks mean?
answered
Nov 24, 2020
in
HDFS
by
sharadyadav1986
#hdfs-replication-consistency
#hadoop-cluster
0
votes
Q: What is the distributed cache in MapReduce?
answered
Nov 24, 2020
in
HDFS
by
sharadyadav1986
#distributed-cache
#mapreduce-cache
0
votes
Q: What role do RecordReader, Combiner, and Partitioner play in a MapReduce operation?
answered
Nov 24, 2020
in
HDFS
by
sharadyadav1986
#recordreader
#combiner
partitioner
0
votes
Q: Why is MapReduce slower in processing data in comparison to other processing frameworks?
answered
Nov 24, 2020
in
HDFS
by
sharadyadav1986
#mapreduce-processing
#mapreduce-framework
0
votes
Q: Is it possible to change the number of mappers to be created in a MapReduce job?
answered
Nov 24, 2020
in
HDFS
by
sharadyadav1986
#hdfs-jobs
#map-reduce-jobs
0
votes
Q: Name some Hadoop-specific data types that are used in a MapReduce program.
answered
Nov 24, 2020
in
HDFS
by
sharadyadav1986
#hadoop-data-types
mapreduce-program
0
votes
Q: What are the major configuration parameters required in a MapReduce program?
answered
Nov 24, 2020
in
HDFS
by
sharadyadav1986
#map-reduce-program
#map-reduce-configuration
0
votes
Q: What is Rack Awareness?
answered
Nov 8, 2020
in
HDFS
by
sharadyadav1986
#rack-awareness
0
votes
Q: How data or file is read in HDFS?
answered
Nov 7, 2020
in
HDFS
by
rahuljain1
#data-file
0
votes
Q: How is indexing done in HDFS?
answered
Nov 7, 2020
in
HDFS
by
rahuljain1
#hdfs-indexing
0
votes
Q: Explain Heartbeat in HDFS?
answered
Nov 7, 2020
in
HDFS
by
rahuljain1
#hearteat-hdfs
0
votes
Q: What is the default replication factor and how will you change it?
answered
Nov 7, 2020
in
HDFS
by
rahuljain1
#hdfs-replication-factor
0
votes
Q: What is Fault Tolerance in HDFS?
answered
Nov 7, 2020
in
HDFS
by
rahuljain1
#fault-tolerance-hdfs
0
votes
Q: Flume Architecture
asked
Jun 20, 2020
in
HDFS
by
Robindeniel
#flume-architecture
0
votes
Q: What are the core components of Hadoop?
answered
Jun 8, 2020
in
HDFS
by
sharadyadav1986
#hadoop-components
#components-of-hadoop
0
votes
Q: What are the key features of HDFS?
answered
Jun 8, 2020
in
HDFS
by
sharadyadav1986
#hdfs-features
#features-of-hdfs
0
votes
Q: Explain the HDFS Architecture and list the various HDFS daemons in HDFS cluster?
answered
Jun 8, 2020
in
HDFS
by
sharadyadav1986
#hdfs-architecture
#hdfs-deamons
0
votes
Q: What is checkpointing in Hadoop?
answered
Jun 8, 2020
in
HDFS
by
sharadyadav1986
#hadoop-checkpointing
#checkpointing-hadoop
0
votes
Q: What is a NameNode in Hadoop?
answered
Jun 8, 2020
in
HDFS
by
sharadyadav1986
#hadoop-namenode
#namenode-hadoop
0
votes
Q: What is a DataNode in HDFS?
answered
Jun 8, 2020
in
HDFS
by
sharadyadav1986
#hdfs-datanode
#datanode-hdfs
0
votes
Q: Is Namenode machine same as DataNode machine as in terms of hardware?
answered
Jun 8, 2020
in
HDFS
by
sharadyadav1986
#namenode-machine
#datanodmachine
0
votes
Q: What is the difference between NAS (Network Attached Storage) and HDFS?
answered
Jun 8, 2020
in
HDFS
by
sharadyadav1986
#nas-vs-hdfs
#network-attached-storage
#hdgs-vs-nas
0
votes
Q: What is the difference between traditional RDBMS and Hadoop?
answered
Jun 8, 2020
in
HDFS
by
sharadyadav1986
#rdbms-vs-hadoop
#hadoop-vs-rdbms
0
votes
Q: What is throughput? How does HDFS provides good throughput?
answered
Jun 8, 2020
in
HDFS
by
sharadyadav1986
#hdfs-throughput
#thoughput-hdfs
#good-hdfs
0
votes
Q: What is Secondary NameNode? Is it a substitute or back up node for the NameNode?
answered
Jun 8, 2020
in
HDFS
by
sharadyadav1986
#hdfs-secondary-namenode
#hdfs-backup-node
0
votes
Q: What is the problem in having lots of small files in HDFS?
answered
Jun 8, 2020
in
HDFS
by
sharadyadav1986
#hdfs-problems
0
votes
Q: What is a heartbeat in HDFS?
answered
Jun 8, 2020
in
HDFS
by
sharadyadav1986
#hdfs-heartbeat
0
votes
Q: How would you check whether your NameNode is working or not?
answered
Jun 8, 2020
in
HDFS
by
sharadyadav1986
#namenode-check
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