Serialization 获取架构反序列化错误：字段的默认值无效_Serialization_Apache Kafka_Deserialization_Avro_Confluent Schema Registry

Serialization 获取架构反序列化错误：字段的默认值无效

serialization apache-kafka

Serialization 获取架构反序列化错误：字段的默认值无效,serialization,apache-kafka,deserialization,avro,confluent-schema-registry,Serialization,Apache Kafka,Deserialization,Avro,Confluent Schema Registry,运行kafka consumer时，我遇到以下错误： Caused by: org.apache.kafka.common.errors.SerializationException: Error deserializing Avro message for id 13 Caused by: org.apache.avro.AvroTypeException: Invalid default for field key_id: "null" not a ["null",{"type":"stri

运行kafka consumer时，我遇到以下错误：

Caused by: org.apache.kafka.common.errors.SerializationException: Error deserializing Avro message for id 13
Caused by: org.apache.avro.AvroTypeException: Invalid default for field key_id: "null" not a ["null",{"type":"string","avro.java.string":"String"}]
    at org.apache.avro.Schema.validateDefault(Schema.java:1512)
    at org.apache.avro.Schema.access$300(Schema.java:86)
    at org.apache.avro.Schema$Field.<init>(Schema.java:493

我尝试了多种方法来解决这个问题，但它仍然存在

您需要设置

“default”：null，而不是“default”：“null”
：
{ "name": "key_id", "type": [ "null", "string" ], "default": "null"},

{ "name": "key_id", "type": [ "null", "string" ], "default": null},