Install Kafka on macOS
I really like Homebrew to install stuff on macOS. So in this tutorial I’ll be using Hombrew to install Apache Kafka on macOS. Install Homebrew: Open Terminal, paste the following...
Exploring Twitter Data using Elasticseach & Kibana’s Canvas
After thinking a lot about what to write next, I stumbled upon a very cool idea. And this is what I thought I should do: Discover something interesting using code...
Getting Twitter Consumer API/Access token keys
To get Twitter's Consumer API keys and Access token keys you must have a Twitter account. Once your Twitter Account is ready follow the steps below: 1) Go to https://developer.twitter.com/...
Spring Boot + Apache Spark
This post will guide you to create a simple web application using Spring Boot and Apache Spark. For the demonstration we are going to build a maven project with Spring...
Sort strings alphabetically rather than lexicographically in Elasticsearch?
Let's say we have a text field "name" in an elasticsearch index with the following values: Siddhant, SIDTECHNOCRAT, and sid. Now follow the conventions mentioned in String Sorting in Elasticsearch, which talks about using...
How to create an Elasticsearch 6.4.1 Plugin
A plugin provides a way to extend or enhance the basic functionality of Elasticsearch without having to fork it from GitHub. Elasticsearch supports a plugin framework which provides many custom...
String sorting in Elasticsearch
We should not sort on analyzed text field instead we should sort on not_analyzed text field. Let's understand this with an example: Index some documents with a text field "name"....
Elasticsearch plugin for Sentiment Analysis
I have created an Elasticsearch plugin for sentiment-analysis using Stanford CoreNLP libraries. The plugin is compatible with Elasticsearch 6.4.1. Follow the below steps to use this plugin with your elasticsearch...
What is Type Safety ?
Definition Type safety is prevention of typed errors in a programming language. A type error occurs when someone attempts to perform an operation on a value that doesn’t support that operation. In simple...
Example of Java 8 Streams groupingBy feature
Statement: Let's say you have a list of integers which you want to group into even and odd numbers. Create a list of integers with four values 1,2,3 and 4: List<Integer>...