Robin Moffatt • 1/22/2020

Kafka Connect and Schemas

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This technical article addresses a common Kafka Connect error (ClassCastException: HashMap cannot be cast to Struct) caused by missing or misconfigured schemas. It explains the role of schemas in Kafka data, compares embedded JSON schemas with Schema Registry, and provides step-by-step fixes for converter configuration and schema declaration to resolve the issue.

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#data serialization #Kafka Connect #Apache Kafka
Kafka Connect and Schemas

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