In this post we are going to talk about how DBT integrates with Spark and how this integration can be useful for us. DBT is a framework that facilitates the design of data modeling throughout the different data modeling cycles.…
This post is about the impact that blocking code can have on an application and the importance of using libraries that natively support asynchronous programming. The goal is to understand that a blocking call is always blocking. In the article,…
Since our Pentaho PDI plugin for Apache Airflow release, we have seen an industry shift towards the usage of Apache Hop for data processing. What is Apache Hop? Apache Hop started (late 2019) as a fork of Kettle PDI, is…
If you have ever shared code, it is quite likely that you have said “well, it works on my machine” when you see how others have difficulties running it. Incorrect configuration, version differences or uninstalled dependencies are often some of…
Today I would like to deal with a topic that, from my point of view, is very important and is probably the holy grail of data engineering projects. However, we rarely reach the necessary level of maturity to be able…
When we imagine a simple programming algorithm, it is logical to think about a succession of instructions that are executed sequentially, where the next instruction will not be executed until the one immediately preceding it has been completed. However, depending…
How to leverage Streaming technologies like Apache Kafka and Apache Spark for Batch processing ETL process. Central piece of the Big Data project Collecting, ingesting, integrating, processing, storing and analyzing large volumes of information are the fundamental activities of a…
It is well known that the use of UDFs (User Defined Functions) in Apache Spark, and especially in using the Python API, can compromise our application performace. For this reason, at Damavis we try to avoid their use as much…
In this article we are going to tell you some ways to solve problems related to the complexity of data engineering itself. An Airflow DAG can become very complex if we start including all dependencies in it, and furthermore, this…
Basic Single Node Configuration Note: the code of this post has been tested using Apache Hadoop 2.10.1. Please check out our previous post, Introduction to Apache Hadoop, to configure this version of Hadoop, in case you have not done it…