Worked on the apache/stormcrawler repository to improve the reliability of distributed crawling by addressing a bug in the URLFrontier spout’s crawl ID handling. Focused on backend development using Java, the work involved debugging and updating code to ensure that crawl-specific data was accurately processed during concurrent crawl operations. By explicitly propagating the crawl ID when fetching URLs, the changes eliminated incorrect data association and reduced unnecessary re-processing. Validation and enhanced observability were added to verify crawl ID propagation under parallel scenarios, strengthening the robustness of the crawling pipeline and ensuring more accurate crawl-level metrics in distributed systems environments.