Tutorial Archive
What is HDFS? HDFS is a file system designed for storing very large files with streaming data access patterns, running on clusters on commodity hardware. Highly fault-tolerant “Hardware failure is the norm rather than the …
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 …
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 …
Immutable class is a class which once created, it’s contents can not be changed. Immutable objects are the objects whose state can not be changed once constructed. e.g. String class An immutable class is one …
In cloud computing Network as a Service (NaaS) is provide remote network infrastructure as service securely with less cost. NaaS makes it possible to deploy custom routing protocols. NaaS provide virtual network Infrastructure to provide …
Platform as a Service, often simply referred to as PaaS, is a category of cloud computing that provides a platform and environment to allow developers to build applications and services over the internet. PaaS services …
When creating Web services, there are two development styles: Contract Last and Contract First. When using a contract-last approach, you start with the Java code, and let the Web service contract (WSDL) be generated from …
