During June 2025, Blcksrx developed a feature for the apache/hadoop repository that introduced an optional cleanup toggle for the S3A magic committer. By adding the fs.s3a.committer.magic.cleanup.enabled configuration, Blcksrx enabled users to disable automatic deletion of staging directories after job completion, addressing performance bottlenecks in large distributed jobs. The implementation involved updating Java code to support the new option, enhancing documentation to clarify usage scenarios, and creating targeted tests to ensure stability across workloads. Leveraging expertise in AWS, Hadoop, and S3, Blcksrx delivered a well-documented, traceable solution that balances performance improvements with backward compatibility for existing workflows.