Kibana is open source visualization framework as data plug-in in Elasticsearch. Through it, the visual capabilities of the data get enhanced in the context of indexing. Elasticsearch is totally an open source search engine working over HTTP interface and JSON documents with full texts. The components of it provide very […]
To crack an interview, it is must that your basic concepts about frameworks are pretty clear. On request of many of our students, we’ve put together a comprehensive list of questions to help you get through your Big Data – Hadoop interview. We’ve made sure that the most probable questions […]
In this tutorial, we would discuss about ElasticSearch Interview Questions and Answers for beginners as well as experienced. Elasticsearch is a real-time and evenly distributed search engine that supports restful searching and analysis based upon the Apache Lucene full-text search engine. It has distributed and full-field real-time analytics storage. Along […]
Hadoop has undergone many changes in three different versions. Hadoop 3 combines the efforts of hundreds of contributors over the last six years since Hadoop 2 launched. In this tutorial, we will discuss the Comparison between Hadoop 2.x vs Hadoop 3.x. So, let’s first see comparison in tabular format: Hadoop […]
In the current tutorial, we would shed light on various functions that can be used to create Xpaths when we possess only the partial knowledge about the HTML attribute associated with the web element. Thus In this tutorial we would have a look at the “Usage of contains () and […]
Python Certification is the most sought-after skill in programming domain. In this Python Interview Questions blog, We will introduce you to the most frequently asked questions in Python interviews. Our Python Interview Questions is the one-stop resource from where you can boost your interview preparation. We have questions on Python […]
Python has become a number one and widely used language in the programming world. The current machine learning boom has raised the number of Developers learning Python. It’s highly versatility nature made it widely acceptable in web, desktop apps, and in many other areas. The popularity for Python is rising […]
Pig datatypes could be categorized into following two categories: Scalar/Simple Complex Scalar Types Complex Types Map: A map in Pig is a chararray to data element mapping, where that element can be any Pig type, including a complex type. The chararray is called a key and is used as an […]
When you don’t want to import the whole table, instead just the newly added or altered rows of the table then you can use incremental import feature of Sqoop. This saves considerable resources. It periodically syncs the table to the HDFS. There are various ways to do that. Sqoop supports […]
Combiner function is used as an optimization technique for MapReduce jobs. Combiner class combines/reduce the data generated by Mappers before it gets transferred to the Reducers. In previous post, you learned about how combiner works in MapReduce programming. In most of cases you can use Reducer class as Combiner class. […]