Which company employs the majority of Spark committers?

The majority of Apache Spark committers are employed by Databricks. This is primarily because Databricks was co-founded by the creators of Apache Spark, and the company has made significant contributions to the development and evolution of Spark since its inception. Databricks provides a cloud-based platform that leverages Spark for big data processing and analytics, which naturally attracts a team of engineers and developers dedicated to advancing the Spark project within the company.

This level of investment by Databricks in both personnel and resources has positioned them at the forefront of the Spark community, hence having the majority of the committers working under their umbrella. This strong connection fosters an environment where innovation and development of Spark continue to thrive, ultimately benefiting users and the broader open-source community.

In contrast, while Google, the Apache Software Foundation, and IBM also engage with Apache Spark, neither has the same concentration of developers working directly on the Spark codebase as Databricks does.