Explore a comprehensive conference talk on managing and optimizing Apache Hadoop ecosystems in large-scale production environments. Delve into Cloudera's extensive experience supporting diverse customer clusters, ranging from tens to thousands of nodes. Learn a systematic approach for debugging and fine-tuning across multiple layers, including application, Hadoop, JVM, kernel, and networking. Discover new tools and subsystems incorporated into operational best practices to ensure cluster uptime, performance, and security. Gain valuable insights for system administrators tasked with maintaining and troubleshooting complex Hadoop deployments.