Compare the hardware requirements of the NameNode with that of the DataNodes in a Hadoop cluster:
Compare the hardware requirements of the NameNode with that of the DataNodes in a Hadoop
cluster:
What information is stored on disk on the NameNode?
What information is stored on disk on the NameNode? (Choose 4)
How does the HDFS architecture provide redundancy?
How does the HDFS architecture provide redundancy?
How are jobs scheduled?
You have a cluster running with the Fair Scheduler enabled and configured. You submit multiple
jobs to cluster. Each job is assigned to a pool. How are jobs scheduled? (Choose 2)
What additional capability does Ganglia provide to that Hadoop alone DOES NOT provide?
What additional capability does Ganglia provide to that Hadoop alone DOES NOT provide?
Where are these log files stored?
For each job, the Hadoop framework generates task log files. Where are these log files stored?
Which of the following commands does Hadoop offer to discover missing or corrupt HDFS data?
Which of the following commands does Hadoop offer to discover missing or corrupt HDFS data?
In a Hadoop cluster for running production jobs that require short turnaround times, the most important consid
In a Hadoop cluster for running production jobs that require short turnaround times, the most
important consideration for slave nodes is:
What can you tell the users?
Someone in your data center unplugs a slave node by accident. Users of the cluster notice via the
Hadoop Web UI that the cluster size has shrunken and express concerns about data loss and
HDFS performance. The replication factor of all the files in the cluster is unchanged from the
default of 3. What can you tell the users?
What is the Secondary NameNode?
What is the Secondary NameNode?