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Rado Buransky

Maximizing read throughput of ScyllaDB table scan using shard-awareness

Test. To read a set of token ranges do the following: We want this… …instead of this. The Task We want to read a given set of token ranges as fast as possible. This can be a full table scan, reading only token ranges for which a Scylla node is the primary replica, or any…

August 7, 2023
Release a Gradle Project Using GitLab CI/CD Pipeline

Release and publish a Gradle project from GitLab CI/CD pipeline to a Maven repository.

January 26, 2022
Introducing ReactiveInflux: non-blocking InfluxDB driver for Apache Spark

The first release of ReactiveInflux developed at Pygmalios – a non-blocking driver for both Scala and Java featuring immutability, testability and extensibility. Comming with a support for Apache Spark it is the weapon of choice.

April 6, 2016
Fighting NotSerializableException in Apache Spark

Using Spark context in a class contructor can cause serialization issues. Move the logic and variables to a member method to avoid some of these problems.

March 4, 2016
Exclude log4j to use slf4j with logback in a Gradle project

The goal is to remove log4j from all transitive dependencies in a Gradle project and replace it by slf4j and logback.

January 5, 2016
Remote Monitoring of Apache Cassandra running in Docker via JMX using Datadog

Step-by-step guide on how to remotely monitor Apache Cassandra in Docker container via JMX using cloud monitoring service Datadog.

December 23, 2015
Integration testing with Gradle

Unit testing works automatically using Gradle, but if you would like to have a separate set of integration tests you need to do a small exercise. Actually they don’t have to be integration tests at all. This guide shows you how to configure Gradle to use any kind of tests and run them independently from…

October 7, 2015
Build and release Scala/Java Gradle project in GitLab using Jenkins to Artifactory

I am going to show in detail how to regularly build your project and then how to make a release build. It involves cooperation of a number of tools which I found tricky to set up properly, that’s why I wrote this. The goal I am about to show you how to achieve two following…

September 23, 2015
Publish JAR artifact using Gradle to Artifactory

So I have wasted (invested) a day or two just to find out how to publish a JAR using Gradle to a locally running Artifactory server. I used Gradle Artifactory plugin to do the publishing. I was lost in endless loop of including various versions of various plugins and executing all sorts of tasks. Yes,…

August 16, 2014
Scala for-comprehension with concurrently running futures

Can you tell what’s the difference between the following two? If yes, then you’re great and you don’t need to read further. Version 1: val milkFuture = future { getMilk() } val flourFuture = future { getFlour() } for { milk <- milkFuture flour <- flourFuture } yield (milk + flour) Version 2: for {…

May 2, 2014

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