Open-source Data Engineering with PostgreSQL

Overview – A Curtain raiser


In the ever-evolving landscape of Data management, organizations are constantly seeking efficient ways to handle, transform, and query massive datasets. Data Archiving has become an important component of Data Engineering in the ever-evolving landscape of Data Management which constitutes efficient methods to handle, transform, and query massive datasets, including the archived ones. This blog series aims to focus on a robust solution using Open-source tools such as Apache Spark and Apache Drill. Throughout this series, we will delve into the intricacies of transforming table data into the Parquet format (columnar storage optimized for analytics) and using Apache Drill to query this data seamlessly. The important pillars of this blog series would be around:

Open-source tools

In the architecture described for archiving and data engineering, two key open-source tools play pivotal roles: Apache Spark and Apache Drill. Together, they form a robust foundation for enabling efficient data loading and exploration within a scalable and flexible environment.


As organizations accumulate massive volumes of data, archiving becomes imperative for both cost optimization and performance enhancement. Parquet, a highly efficient columnar storage format, has gained prominence due to its ability to compress and store data in a way that facilitates fast analytics. In this series, we delve into the motivations behind archiving data and how Parquet addresses these challenges.

Legacy Datasets

A key emphasis of this series is on how data archiving plays a pivotal role in liberating production environments from the burden of legacy datasets. By effectively storing and archiving historical data in a structured and efficient format, organizations not only ensure smoother operational workflows but also unlock the potential for enhanced analytics.

Choosing Parquet format

Parquet is chosen for its superiority in analytical data storage due to its columnar storage architecture. This format excels in optimizing query performance through efficient compression techniques like predicate pushdown, run-length encoding, and dictionary encoding, reducing storage requirements and speeding up query processing. Its flexibility in schema evolution allows seamless modifications, ensuring compatibility across different versions for smooth system upgrades.

Apache Spark:

  • Apache Spark is a powerful open-source data processing engine known for its distributed computing capabilities.
  • In this context, Apache Spark serves as the backbone for the data-loading process. Its scalability and ability to handle diverse data sources make it well-suited for efficiently extracting, transforming, and loading (ETL) data into the desired format, which, in this case, involves archiving data into the Parquet format.

Apache Drill:

  • Apache Drill is a schema-free SQL query engine designed for exploring and querying large-scale datasets.
  •  In the described setup, it is instrumental in querying and extracting insights from the Parquet-archived data.
  • The schema-free nature of Apache Drill aligns well with the flexibility of the Parquet format, allowing for seamless querying and analysis without strict schema constraints.

As we conclude this introductory chapter of our blog series on transforming and archiving legacy datasets with Apache Spark, Parquet files, and Apache Drill, we’ve only just scratched the surface.

In the upcoming articles, we’ll walk you through practical implementation strategies, share real-world case studies.

Stay tuned for more!

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>