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Answers by rajeshsharma
0
votes
What is the difference between Hashtable and HashMap?
answered
Jul 2, 2023
in
JAVA
#java-hashtable
#java-hashmap
Java-questions-answers
0
votes
What does System.gc() and Runtime.gc() methods do?
answered
Jul 2, 2023
in
JAVA
system-gc
runtime-gc
0
votes
What are Directives?
answered
Jul 2, 2023
in
JAVA
directives
0
votes
Can I set the number of Reducers to Zero?
answered
Jun 23, 2023
in
HDFS
reducers
0
votes
Does Mapreduce programming model provide a way for Reducers to communicate with each other and in a Mapreduce Job can a Reducer communicate with another Reducer?
answered
Jun 23, 2023
in
HDFS
mapreduce
programmingmodel
0
votes
How NameNode handles DataNode failures?
answered
Jun 23, 2023
in
HDFS
datanode
namenode
0
votes
What is configuration of a typical Slave Node on Hadoop Cluster and how many Jvms run on a Slave Node?
answered
Jun 23, 2023
in
HDFS
hadoop
cluster
0
votes
What is a task instance in Hadoop and where does it run?
answered
Jun 23, 2023
in
HDFS
hadoop
instance
0
votes
What is a Task Tracker in Hadoop and how many instances of Task Tracker run on a Hadoop Cluster?
answered
Jun 23, 2023
in
HDFS
tasktracker
hadoop
0
votes
How JobTracker schedules a task?
answered
Jun 23, 2023
in
HDFS
jobtrackerschedules
0
votes
Can Hadoop be compared to Nosql Database like Cassandra?
answered
Jun 23, 2023
in
HDFS
nosql
database
cassandra
0
votes
Why reading is done in parallel and writing is not in Hdfs?
answered
Jun 23, 2023
in
HDFS
hdfs-writing
0
votes
Which are the two types of writes In Hdfs?
answered
Jun 23, 2023
in
HDFS
hdfs-writes
0
votes
Is a Job split into maps?
answered
Jun 23, 2023
in
HDFS
maps
hdfs
0
votes
Why are the number of splits equal to the number of Maps?
answered
Jun 23, 2023
in
HDFS
maps
hdfs
0
votes
Do we require two servers for the NameNode and the DataNodes?
answered
Jun 23, 2023
in
HDFS
namenode
datanodes
0
votes
What is the difference between Gen1 and Gen2 Hadoop with regards to the NameNode?
answered
Jun 23, 2023
in
HDFS
hadoop
namenode
0
votes
What if Rack 2 and DataNode fails?
answered
Jun 23, 2023
in
HDFS
hdfs
v
0
votes
Do we need to place 2nd and 3rd Data in Rack 2 only?
answered
Jun 23, 2023
in
HDFS
hdfs
0
votes
On what basis Data will be stored on a Rack?
answered
Jun 22, 2023
in
HDFS
rack-data
hdfs
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