Charlie Hull Archives

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Charlie Hull

Charlie is a leading figure in the search industry, known for an honest, neutral and pragmatic viewpoint; he has held multiple roles including senior consultant, strategic advisor, project manager, sales & marketing director, conference organiser & speaker, trainer, writer & mentor. He is deeply connected with the business & technology of website and enterprise search engines. His past experience in software engineering gives me a highly informed perspective on search technology with a particular focus on open source platforms such as Lucene, Apache Solr, Elasticsearch, OpenSearch & Vespa. More recently he has helped several companies use traditional & modern AI techniques to supercharge search – here’s some recommendations from the team at Moonpig who he helped in 2025.

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How a single space broke OpenSearch backups—and how Aiven fixed it

May 29, 2026

A single space in a KNN field name broke OpenSearch snapshots. Learn how Aiven traced the bug, reported it, and helped the community ship a fix in OpenSearch v2.17.... Read more.

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How a single space broke OpenSearch backups—and how Aiven fixed it

OpenSearch is a community-driven, Apache 2.0-licensed open source search and analytics suite that makes it easy to ingest, search, visualize, and analyze data.

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