Understanding Facebook's HBase Usage in its Messaging Platform

Facebook, one of the world's largest social media platforms, relies on powerful and scalable technologies to support its global user base. Among these technologies is HBase, a distributed, column-oriented database management system designed to handle very large tables. In this article, we delve into the specific version of HBase that Facebook uses for its new messaging platform and explore its integration with the wider Apache HBase community.

The Internal Branch of HBase at Facebook

Facebook maintains an internal branch of HBase tailored for its messaging platform, which it regularly updates from the Apache SVN repository. This internal branch ensures that Facebook can leverage the latest features and improvements while still maintaining the stability required for such a critical application.

Comparison with the Apache Trunk

The majority, if not all, of the compatible features from this internal branch have been ported to the current Apache HBase trunk. The primary distinction lies in the master-related code, which remains localized to ensure the continued stability of Facebook's messaging platform. This localized codebase, often referred to as a 'side branch,' is a testament to Facebook's commitment to open source while still addressing specific enterprise requirements.

The Current Production Environment

Currently, the version of HBase in production at Facebook closely aligns with the 0.89.20100924 development release. However, this version has undergone additional updates and patches from the Apache trunk, enhancing its functionality and stability. Facebook engineers actively contribute to the open source community, pushing these improvements back into the main branch and ensuring that the wider HBase ecosystem benefits from their expertise. This active engagement underscores the symbiotic relationship between Facebook's internal developments and the broader HBase community.

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Conclusion

Facebook's use of HBase in its messaging platform is a prime example of how large organizations can benefit from open source technologies while still maintaining tailored solutions. By maintaining an internal branch and actively contributing to the Apache HBase community, Facebook ensures a balance between innovation and stability. This approach not only benefits Facebook but also the wider HBase community, contributing to the continuous improvement of this powerful database system.