I want to create stream for users topics
but , ksqlDB can not create stream.
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How have you populated the `users` topic? Does the schema exist in the Schema Registry? – Robin Moffatt Jun 24 '21 at 08:14
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BTW it's much easier for people to help if you put the text from the CLI into your question directly, instead of images :) – Robin Moffatt Jun 24 '21 at 09:18
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Does the schema exist in the Schema Registry? what is this? – Mehrdad Masoumi Jun 26 '21 at 13:16
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1If you're specifying `VALUE_FORMAT='AVRO'` then the data needs to be serialised with the Avro serialiser which places the schema in the Schema Registry. – Robin Moffatt Jun 27 '21 at 20:36
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I use mysql database and debezuim for connec kafka to mysql. Can JSON format instead of AVRO be used everywhere? How? – Mehrdad Masoumi Jun 28 '21 at 06:55
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after print topic in ksqldb Key format: HOPPING(KAFKA_INT) or TUMBLING(KAFKA_INT) or HOPPING(KAFKA_STRING) or TUMBLING(KAFKA_STRING) or KAFKA_STRING Value format: JSON or KAFKA_STRING – Mehrdad Masoumi Jun 28 '21 at 07:13
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Please edit your question to include details of your source connector configuration. – Robin Moffatt Jun 28 '21 at 08:25
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You should create a schema with subject name "user-value" in Schema Registry first, then your can create the stream. For how to post schema to Schema Registry, please visit https://docs.confluent.io/platform/current/schema-registry/develop/using.html
Linh Vu Tran Nguyen
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