Best SQL Databases for Hadoop

SingleStore, previously known as MemSQL, is a highly scalable and distributed SQL database that can operate in any environment. It is designed to provide exceptional performance for both transactional and analytical tasks while utilizing well-known relational models. This database supports continuous data ingestion, enabling operational analytics critical for frontline business activities. With the capacity to handle millions of events each second, SingleStore ensures ACID transactions and allows for the simultaneous analysis of vast amounts of data across various formats, including relational SQL, JSON, geospatial, and full-text search. It excels in data ingestion performance at scale and incorporates built-in batch loading alongside real-time data pipelines. Leveraging ANSI SQL, SingleStore offers rapid query responses for both current and historical data, facilitating ad hoc analysis through business intelligence tools. Additionally, it empowers users to execute machine learning algorithms for immediate scoring and conduct geoanalytic queries in real-time, thereby enhancing decision-making processes. Furthermore, its versatility makes it a strong choice for organizations looking to derive insights from diverse data types efficiently.

Apache Phoenix provides low-latency OLTP and operational analytics on Hadoop by merging the advantages of traditional SQL with the flexibility of NoSQL. It utilizes HBase as its underlying storage, offering full ACID transaction support alongside late-bound, schema-on-read capabilities. Fully compatible with other Hadoop ecosystem tools such as Spark, Hive, Pig, Flume, and MapReduce, it establishes itself as a reliable data platform for OLTP and operational analytics through well-defined, industry-standard APIs. When a SQL query is executed, Apache Phoenix converts it into a series of HBase scans, managing these scans to deliver standard JDBC result sets seamlessly. The framework's direct interaction with the HBase API, along with the implementation of coprocessors and custom filters, enables performance metrics that can reach milliseconds for simple queries and seconds for larger datasets containing tens of millions of rows. This efficiency positions Apache Phoenix as a formidable choice for businesses looking to enhance their data processing capabilities in a Big Data environment.

Vertica is a high-performance enterprise analytics and data warehousing platform that enables organizations to process large-scale data workloads, advanced analytics, and AI applications across cloud, on-premises, and hybrid infrastructures. Acquired by Rocket Software, Vertica expands Rocket’s modernization portfolio by adding enterprise-grade analytics and artificial intelligence capabilities to mission-critical systems modernization. The platform is designed to help enterprises unlock the value of their data through fast query performance, scalable analytics, and AI-driven insights that support modern business operations and digital transformation initiatives. Vertica supports flexible deployment models including private cloud, public cloud, managed services, and on-premises environments, allowing organizations to modernize data infrastructure without being restricted to a single deployment strategy. The platform enables businesses to run advanced analytics and generative AI directly against trusted enterprise data while maintaining stability, governance, and operational performance. Vertica also complements Rocket Software’s DataEdge and ContentEdge solutions by creating a unified ecosystem for enterprise data integration, modernization, governance, and analytics. Organizations use Vertica to accelerate reporting, improve operational intelligence, optimize enterprise workloads, and drive faster data-driven decision-making across large-scale business environments. The platform is designed for enterprises that require scalable analytics, hybrid cloud flexibility, and AI-ready infrastructure for mission-critical systems modernization.

Greenplum Database® stands out as a sophisticated, comprehensive, and open-source data warehouse solution. It excels in providing swift and robust analytics on data volumes that reach petabyte scales. Designed specifically for big data analytics, Greenplum Database is driven by a highly advanced cost-based query optimizer that ensures exceptional performance for analytical queries on extensive data sets. This project operates under the Apache 2 license, and we extend our gratitude to all current contributors while inviting new ones to join our efforts. In the Greenplum Database community, every contribution is valued, regardless of its size, and we actively encourage diverse forms of involvement. This platform serves as an open-source, massively parallel data environment tailored for analytics, machine learning, and artificial intelligence applications. Users can swiftly develop and implement models aimed at tackling complex challenges in fields such as cybersecurity, predictive maintenance, risk management, and fraud detection, among others. Dive into the experience of a fully integrated, feature-rich open-source analytics platform that empowers innovation.