Yearly Archive: 2014
Here we will describe about Hadoop Architecture. In high level of hadoop architecture there are two main modules HDFS and MapReduce.Means HDFS + MapReduce = Hadoop Framework Following pic have high level architecture of hadoop …
What is Hadoop? first of all we are understanding what is DFS(Distributed File System), Why DFS? DFS(Distributed File Systems)- A distributed file system is a client/server-based application that allows clients to access and process data …
What is Big Data? Lots of Data (Terabytes or Petabytes) Big Data is the term for a collection of data sets so large and complex that it becomes difficult to process using on-hand database management …
1.When is the earliest point at which the reduce method of a given Reducer can be called? A. As soon as at least one mapper has finished processing its input split. B. As soon as …
In this tutorial, it shows the use of java.lang.Comparable and java.util.Comparator to sort a Java object based on its property value. Java provides some inbuilt methods to sort primitive types array or Wrapper classes array …
Serialization in java is a mechanism of writing the state of an object into a byte stream. What is Serialization? – Serializable is a marker interface. When an object has to be transferred over a …
The object cloning is a way to create exact copy of an object. For this purpose, clone() method of Object class is used to clone an object. The java.lang.Cloneable interface must be implemented by the …
