Avro schema for a given class

Question

What would be the equivalent avro schema for following class

class A {
  String s;
  List<String> l;
}

I have following, but its doesnt work:

{
 "name" : "A",
 "type": "record",
 "fields": [
   {
     "name": "s",
     "type": "string"
   },
   {
     "name": "l"
     "type": "array",
     "items": "string"
   }
  ]
}

Answer 1

I believe the array type needs to be nested in another dictionary like so:

{
 "name" : "A",
 "type": "record",
 "fields": [
   {
     "name": "s",
     "type": "string"
   },
   {
     "name": "l"
     "type": {
       "array",
       "items": "string"
     }
   }
 ]
}

Answer 2

You can use Avro IDL to basically have the same thing

protocol SampleProtocol {
    record A {
        string s;
        array<string> l;
    } 
}

You can refer the Avro documentation on how to actually get a Java Arraylist class when generating the class, otherwise it's an array