sijie commented on issue #6321: [ERROR] Failed at fetching schema info for EMPTY URL: https://github.com/apache/pulsar/issues/6321#issuecomment-585887501 ``` pulsar-client produce -m '{"name":"abc"}' test-topic ``` `pulsar-client` doesn't support producing JSON messages to the topic. It actually produced a `bytes` message so that jdbc connector doesn't know how to deserialize it. The error message should be improved to clarify that. If you want to produce a json message, you might consider writing a producer program to produce json messages or help improve `pulsar-client`.
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