Guest post by the Didi Engineering Team. For the full story with detailed slides, see Apache Ozone Best Practices at Didi (PDF).

As Didi's volume of unstructured data surged into the hundreds of petabytes, comprising tens of billions of files, their traditional storage architecture faced severe scalability bottlenecks. This post summarizes how they migrated from HDFS to Apache Ozone, the optimizations they implemented for high-performance reads, and their journey in contributing these improvements back to the community.

Ever replaced a drive on a Datanode only to watch it become an I/O hotspot? Or seen one disk hit 95% usage while others on the same machine sit idle? These imbalances create performance bottlenecks and increase failure risk. Apache Ozone's new intra-node Disk Balancer is designed to fix this—automatically.

Here's a step‑by‑step guide to mounting and managing your Apache Ozone object store's S3 interface using CyberDuck.

Apache Ozone 2.0.0 was released on April 30th, 2025. This release includes 1700 new features, improvements, and bug fixes on top of Ozone 1.4.