Coco Moon | Distributed Systems & AI Infrastructure http://www.cocomoon-tech.com//blog Charles Chen’s projects and writing on distributed systems engineering, real-time risk processing, and AI-driven data processing, spanning Kafka and Flink pipelines, GitOps environments, and local Agent Infrastructure. en-us admin@cocomoon-tech.com (Charles Chen) admin@cocomoon-tech.com (Charles Chen) Wed, 23 Sep 2026 00:00:00 GMT http://www.cocomoon-tech.com//blog/flink-tablefunction-json-array-parser Flink TableFunction 解析嵌套 JSON 数组：从“UNNEST 报错”到“STRING 内层解析” http://www.cocomoon-tech.com//blog/flink-tablefunction-json-array-parser Kafka 一条消息里，外层是真数组、内层却是“字符串包 JSON 数组”。把内层当 ARRAY<ROW> 去 UNNEST 直接反序列化报错，靠一层 UNNEST + 一层 TableFunction 才解决。 Wed, 23 Sep 2026 00:00:00 GMT admin@cocomoon-tech.com (Charles Chen) flinktablefunctionjsonkafkaudf大数据