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HDFS Interview Questions and Answers
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Questions
HDFS
0
votes
Q: Explain the Shuffle?
asked
Jun 21, 2023
in
HDFS
by
sharadyadav1986
shuffle-hdfs
0
votes
Q: What is the Reducer used for?
asked
Jun 20, 2023
in
HDFS
by
john ganales
reducer
0
votes
Q: How many Maps are there in a particular Job?
asked
Jun 20, 2023
in
HDFS
by
john ganales
map-job
0
votes
Q: What is the use of Combiner?
asked
Jun 20, 2023
in
HDFS
by
john ganales
combiner
mapperr
0
votes
Q: How can we control particular Key should go in a specific Reducer?
asked
Jun 20, 2023
in
HDFS
by
john ganales
reducer
0
votes
Q: What is next step after Mapper Or Maptask?
asked
Jun 20, 2023
in
HDFS
by
john ganales
mapper
maptask
0
votes
Q: Which Object can be used to get the progress of a particular Job?
asked
Jun 20, 2023
in
HDFS
by
john ganales
object-job
0
votes
Q: How does Mapper's run method works?
asked
Jun 20, 2023
in
HDFS
by
john ganales
mapper-runmethod
0
votes
Q: How can you Add the arbitrary Key value pairs in your Mapper?
asked
Jun 20, 2023
in
HDFS
by
john ganales
keyvaluepairs
0
votes
Q: What is the use of context Object?
asked
Jun 20, 2023
in
HDFS
by
john ganales
contextobject
0
votes
Q: What happens if You don't Override the Mapper methods and keep them as it is?
asked
Jun 20, 2023
in
HDFS
by
john ganales
mappermethods
0
votes
Q: Which are the methods in the Mapper Interface?
asked
Jun 20, 2023
in
HDFS
by
john ganales
mapperinterface
0
votes
Q: How Mapper is instantiated in a running Job?
asked
Jun 20, 2023
in
HDFS
by
john ganales
instantiated-mapper
0
votes
Q: Explain the wordcount implementation via Hadoop Framework?
asked
Jun 20, 2023
in
HDFS
by
john ganales
hadoopframework
0
votes
Q: What are the restriction to the Key and Value Class?
asked
Jun 20, 2023
in
HDFS
by
john ganales
keyvalueclass
0
votes
Q: Explain how input and output data format of the Hadoop Framework?
asked
Jun 20, 2023
in
HDFS
by
john ganales
hadoop
framework
0
votes
Q: What is SequenceFileInputFormat?
asked
Jun 20, 2023
in
HDFS
by
john ganales
sequencefileinputformat
0
votes
Q: Explain Jobconf in Mapreduce?
asked
Jun 20, 2023
in
HDFS
by
john ganales
jobconf
mapreduce
0
votes
Q: What are the parameters of Mappers and Reducers?
asked
Jun 20, 2023
in
HDFS
by
Robin
parameters-mappers
0
votes
Q: What is OutputCommitter?
asked
Jun 20, 2023
in
HDFS
by
Robin
outputcommitter
hdfs
0
votes
Q: What is RecordReader in a MapReduce?
asked
Jun 20, 2023
in
HDFS
by
Robin
recordreader
mapreduce
0
votes
Q: What is identity Mapper?
asked
Jun 20, 2023
in
HDFS
by
Robin
identity
mapper
0
votes
Q: What main configuration parameters are specified in Mapreduce?
asked
Jun 20, 2023
in
HDFS
by
Robin
configurationparametersmapreduce
0
votes
Q: Why Tasktracker launch child Jvm to do a task?
asked
Jun 20, 2023
in
HDFS
by
Robin
tasktracker
launch
child
jvm
0
votes
Q: How many slots allocate for each task?
asked
Jun 20, 2023
in
HDFS
by
Robin
allocate
0
votes
Q: What is setup and clean up methods?
asked
Jun 20, 2023
in
HDFS
by
Robin
cleanupmethods
0
votes
Q: How to do value level comparison?
asked
Jun 20, 2023
in
HDFS
by
Robin
value
level
comparison
0
votes
Q: What is chain Mapper?
asked
Jun 20, 2023
in
HDFS
by
Robin
chain
mapper
0
votes
Q: What is the data locality?
asked
Jun 20, 2023
in
HDFS
by
Robin
datalocality
hdfs
0
votes
Q: What’s the Mapreduce Job consists?
asked
Jun 20, 2023
in
HDFS
by
Robin
mapreduce
job
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