Arun Chacko developed native Google Cloud Storage integration for the Apache Hadoop project, enabling GCS to function as a first-class Hadoop filesystem. He designed and implemented new Java classes and updated configuration files to allow seamless interaction with GCS buckets and objects, streamlining cloud-based data workflows. Working within the apache/hadoop repository, Arun focused on API integration and cloud storage, ensuring secure and scalable access to cloud data. His work reduced data movement overhead and improved operational consistency for Hadoop users adopting cloud storage backends, laying a technical foundation for future cloud-native data management and analytics pipelines within the Hadoop ecosystem.