What happens if a Mapper on one node goes into an infinite loop while running a MapReduce job?
What happens if a Mapper on one node goes into an infinite loop while running a MapReduce job?
Which MapReduce v2 (MR2/YARN) daemon is a per-machine slave responsible for launching application containers a
Which MapReduce v2 (MR2/YARN) daemon is a per-machine slave responsible for launching
application containers and monitoring application resources usage?
What is the effect of a second client requesting a file during a write?
Your cluster Mode size is set to 128MB. A client application (client application A) is writing a
500MB file to HDFS. After client application A has written 300MB of data, another client (client
application B) attempts to read the file. What is the effect of a second client requesting a file during
a write?
What would be a reasonable configuration of disk drives in a Hadoop datanode?
What would be a reasonable configuration of disk drives in a Hadoop datanode?
Which daemon spawns child JVMs to perform MapReduce processing?
Which daemon spawns child JVMs to perform MapReduce processing?
which scenario should not result in loss of HDFS data assuming the default replication factor settings?
Assuming a large properly configured multi-rack Hadoop cluster, which scenario should not result
in loss of HDFS data assuming the default replication factor settings?
What’s the relationship between JobTrackers and TaskTrackers?
What’s the relationship between JobTrackers and TaskTrackers?
Which scenario will go undetected?
You are running a Hadoop cluster with all monitoring facilities properly configured. Which scenario
will go undetected?
What is the standard configuration of slave nodes in a Hadoop cluster?
What is the standard configuration of slave nodes in a Hadoop cluster?
which of the following considerations is the least important?
When setting the HDFS block size, which of the following considerations is the least important?