3 comments on “Apache Hadoop vs Apache Spark”

Apache Hadoop vs Apache Spark


The term Big Data has created a lot of hype already in the business world. Hadoop and Spark are both Big Data frameworks – they provide some of the most popular tools used to carry out common Big Data-related tasks.…

1 comment on “Knolx: Getting started with Presto”

Knolx: Getting started with Presto


Hi all, Knoldus has organized a 1-hour session on 8th September 2017. The topic was “Getting started with Presto”. Many people have joined and enjoyed the session. I am going to share the slides here. Please let me know if you…

5 comments on “What’s new in Apache Spark 2.2”

What’s new in Apache Spark 2.2


Apache recently released a newer version of Spark i.e Apache Spark2.2. The new version comes with new improvements as well as the addition of new functionalities. The major addition to this release is Structured Streaming. It has been marked as production…

0 comments on “Authentication using Actions in Play Framework”

Authentication using Actions in Play Framework


Actions plays an important role in Play Framework, the requests received by a Play application are handled by an Action. Action composition is an incredibly powerful way to enhance or restrict controller behaviour. In Play Framework controllers consist of methods that create Action objects…

1 comment on “On the go with ReactiveMongo”

On the go with ReactiveMongo


Hi Guys, In today's blog we'll be discussing about ReactiveMongo. It is a Scala driver that provides fully non-blocking and asynchronous I/O operation. It is designed to avoid any kind of blocking request to your database. Every operation returns immediately,…

0 comments on “Connecting To Presto via JDBC”

Connecting To Presto via JDBC


Hi Guys, In this blog we'll be discussing about how to make a connection to presto server using JDBC, but before we get started let's discuss what Presto is. What is Presto ? So, Presto is an open source distributed…

0 comments on “Reading data from different sources using Spark 2.1”

Reading data from different sources using Spark 2.1


Hi all, In this blog, we'll be discussing on fetching data from different sources like csv, json, text and parquet files. So first of all let's discuss what's new in Spark 2.1. In previous versions of Spark, you had to create…

0 comments on “Learning Markdown”

Learning Markdown


Markdown is a lightweight markup language with plain text formatting syntax designed so that it can be converted to HTML and many other formats using a tool by the same name. Markdown is often used to format readme, for writing messages in…

0 comments on “Knolx : Realm Mobile Database”

Knolx : Realm Mobile Database


Hi guys, Knoldus organized a knolx session on the topic : Realm Mobile Database. A better mobile database means better apps. Realm is a mobile database that runs directly inside phones, tablets or wearables. It saves data in minutes so…

1 comment on “Security threats in web applications”

Security threats in web applications


Today, most security breaches online occur through the application rather than the server. The majority of web application attacks occur through cross-site scripting (XSS) and SQL injection attacks which typically result from flawed coding, and failure to sanitize input to…