DataScientists: a blog about everything data related.

  • Apache Nifi on Google Cloud Kubernetes Engine (GKE)

    Apache Nifi on Google Cloud Kubernetes Engine (GKE)

    Apache Nifi on GKE can be a good solution, if you want to have a low code solution for processing streaming data. If you set it up on GKE, a managed version of Kubernetes, you have a managed scalable environment and do not need to worry about handling the actual servers. Setup of the Apache […]

  • Data Infrastructure in the Cloud

    Data Infrastructure in the Cloud

    Having your data infrastructure in the cloud has become a real option for a lot of companies, especially since the big cloud providers have a lot of managed services available for a modern data architecture aside from just a database management system.

  • Bringing machine learning models into production

    Developing and bringing machine learning models into production is a task with a lot of challenges. These include model and attribute selection, dealing with missing values, normalization and others. Finding a workflow that puts all the gears, from data preprocessing and analysis over building models and selecting the best performing one to serving the model […]

  • Google Cloud Data Engineer Exam Preparation

    Google Cloud Data Engineer Exam Preparation

    This is a little text with all the stuff that helped me prepare for the Google Cloud Data Engineer Exam. There are a lot of courses and resources, that help you in preparing for this. The following links helped me in preparation for my Google Data Engineer Exam. On Coursera there is are several courses […]

  • AVRO schema generation with reusable fields

    Why use AVRO and AVRO Schema? There are several serialized file formats out there, so chosing the one most suited for your needs is crucial. This blog entry will not compare them, but it will just point out some advantages of AVRO and AVRO Schema for an Apache Hadoop ™ based system. Avro schema can […]

  • Plumber: Getting R ready for production environments?

    R Project and Production Running R Project in production is a controversially discussed topic, as is everything concerning R vs Python. Lately there have been some additions to the R Project, that made me look into this again. Researching R and its usage in production environments I came across several packages / project, that can […]

  • Analytics Platform: An Evolution from Data Lake

    Analytics Platform Having built a Data Lake for your company’s analytical needs, there soon will arise new use cases, that cannot be easily covered with the Data Lake architecture I covered in previous posts, like Apache HAWQ™: Building an easily accessable Data Lake. You will need to adapt or enhance your architecture to become more […]

  • Building a Productive Data Lake: How to keep three systems in sync

    Three Systems for save Development When you are building a productive Data Lake it is important to have at least three environments: Development: for development, where “everything” is allowed. Staging: for testing changes in a production like environment. Production: Running your tested and productive data applications With these different environments comes the need to keep […]

  • Apache AVRO: Data format for evolution of data

    Flexible Data Format: Apache AVRO Apache AVRO is a data serialization format. It comes with an data definition format that is easy to understand. With the possibility to add optional fields there is a solution for evolution of the schemas for the data. Defining a Schema Defining a schema in Apache AVRO is quite easy, […]

  • Apache HAWQ: Building an easily accessable Data Lake

    Data Lake vs Datawarehouse The Data Lake Architecture is an up and coming approach to making all data accessible through several methods, be that in real-time or batch analysis. This includes unstructured data as well as structured data. In this approach the data is stored on HDFS and made accessible by several tools, including: Apache […]

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