At the moment i'm serializing a class to an avsc schema. This works pretty good:
DatasetDescriptor desc = new DatasetDescriptor.Builder().schema(ClassName.class).build();
But, I need to create an AVSC without any given class dynamically. Is this possible?
It is possible. You can create a schema on the fly or read an avro schema. The following code use hardcoded schema but is basically the same idea
Schema schema = new Schema.Parser().parse("{\"namespace\": \"example.avro\",\n" +
" \"type\": \"record\",\n" +
" \"name\": \"User\",\n" +
" \"fields\": [\n" +
" {\"name\": \"name\", \"type\": \"string\"},\n" +
" {\"name\": \"favorite_number\", \"type\": [\"int\", \"null\"]},\n" +
" {\"name\": \"favorite_color\", \"type\": [\"string\", \"null\"]}\n" +
" ]\n" +
"}");
DatasetDescriptor desc = new DatasetDescriptor.Builder().schema(schema).build();