I got the exception from confluent Kafka producer like
Avro.AvroException: GenericRecord required to write against record schema but found Avro.Generic.GenericRecord
\n at Avro.Generic.DefaultWriter.EnsureRecordObject(RecordSchema s, Object value)
\n at Avro.Generic.DefaultWriter.WriteRecord(RecordSchema schema, Object value, Encoder encoder)
\n at Avro.Generic.DefaultWriter.Write(Schema schema, Object value, Encoder encoder)
\n at Avro.Generic.DefaultWriter.WriteArray(ArraySchema schema, Object value, Encoder encoder)
\n at Avro.Generic.DefaultWriter.Write(Schema schema, Object value, Encoder encoder)
\n at Avro.Generic.DefaultWriter.WriteRecord(RecordSchema schema, Object value, Encoder encoder)
please find the implementation code.
var s = (RecordSchema)RecordSchema.Parse(
@{
"name": "StaticDataNotification",
"type": "record",
"namespace": "KafkaName",
"fields": [
{
"name": "UniqueID","type": "string"
},
{
"name": "DataList",
"type": {
"type": "array",
"items":{
"name": "DataList_record",
"type":"record",
"fields": [
{
"name": "FieldName","type": "string"
},
{
"name": "OldValue","type": "string"
}
]
}
}
}
]
}
var child = (RecordSchema)RecordSchema.Parse(
@{
"name": "DataList_record",
"type":"record",
"fields": [
{
"name": "FieldName","type": "string"
},
{
"name": "OldValue","type": "string"
}
]
}
C# Implementation
var recordStaticData = new GenericRecord(s);
recordStaticData.Add("UniqueID","123456");
List<GenericRecord> genericRecords = new List<GenericRecord>();
for (int i = 0; i < 3; i++)
{
GenericRecord StaticList = new GenericRecord(child);
StaticList.Add("FieldName", "Name");
StaticList.Add("OldValue", i.ToString());
genericRecords.Add(StaticList);
}
recordStaticData.Add("DataList",genericRecords.ToArray());
var dr = producer.ProduceAsync("Topic", new Message<string,GenericRecord>{ Key = System.Guid.NewGuid().ToString("N"), Value = recordStaticData });
What I have tried:
I found this solution from google. But its not suit this problem,
Avro.AvroException: GenericRecord required to write against record schema but found Avro.Generic.GenericRecord · Issue #1217 · confluentinc/confluent-kafka-dotnet · GitHub[
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