hadoop bigdata interview questions and answers - skillgun
How many modules are there in Apache Hadoop frame work?
Which of the following Hadoop Framework consists of libraries and utilities
needed by Hadoop modules?
Hadoop MapReduce is used to?
Parallel processing of large datasets
Provides High aggregate
bandwidth across the cluster
Contains necessary Javafiles
and scripts required tostart hadoop
job scheduling and cluster
Hadoop Framework is written in which
The blocks of HDFS files which are frequently accessed are cached in
memory of client application
memory of namenode
memory of datanode
All of the above
The HDFS command which is used to create the copy of file from a local
Among the following which one is not the feature of Bigdata?
Identify the tool which is used for uniformly spreading the data across
the data nodes
What happens to the memory of the namenode if we increase the size
of files stored in HDFS without incresing the number of files
Depends on situation
The amount of memory needed for the secondary name node is
Similar to that of primary node
Half of the primary node
Double of primary node
Depends on the number of
number of data nodes to be handeled
How many types of data will bepresent in Bigdata?
Which type of data is present in structured data?
Which type of data is present in Semistructured data?
Which type of data is present in Unstructured data?
Which task takes input data and converts it into a set of data, where individual elements are broken down into key/value pairs?
The Reduce task
The map task
In Map Reduce Framework how many Job Tracker and task trackers are there per cluster-node?
The master in cluster-node?
Which is the slave in cluster-node?
master/slave architecture is used by?
How many Name nodes are there in master/slave architecture?
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