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The need for data replication can arise in various scenarios like
D. all of the above
D. all of the above
See lessWhich of the following is the correct statement?
A. datanode is the slave/worker node and holds the user data in the form of data blocks
A. datanode is the slave/worker node and holds the user data in the form of data
See lessblocks
What is HDFS Block in Hadoop?
B. it is the physical representation of data
B. it is the physical representation of data
See lessThe namenode knows that the data node is active using a mechanism knownas
heartbeats
heartbeats
See lessWhich among the following is the correct statement
B. namenode stores metadata
B. namenode stores metadata
See lessWhich among the following command is used to copy a directory from one node to another in HDFS?
B. distcp
B. distcp
See lessWhat is HDFS?
A. storage layer
A. storage layer
See lessis a CPU emulator and virtual machine monitor
C. qemu
C. qemu
See lessAmazon Machine Images are virtual appliances that have been packaged to run on the grid of nodes.
B. xen
B. xen
See lessApplications such as a Web server or database server that can run on a virtual machine image are referred to as
B. virtual appliances
B. virtual appliances
See less