dsmiley commented on code in PR #4761:
URL: https://github.com/apache/solr/pull/4761#discussion_r3839207742


##########
solr/core/src/java/org/apache/solr/jersey/SolrJacksonMapper.java:
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@@ -70,7 +70,8 @@ public NamedListSerializer(Class<NamedList> nlClazz) {
     @Override
     public void serialize(NamedList value, JsonGenerator gen, 
SerializerProvider provider)
         throws IOException {
-      gen.writeObject(value.asShallowMap());
+      // Not SimpleOrderedMap: it IS a NamedList, so this serializer would 
recurse on it.
+      gen.writeObject(value.asMap(0));

Review Comment:
   Then it seems there is a lost opportunity here to be more efficient, as 
we're creating a new data structure merely to write it out, when Jackson surely 
knows how to serialize a Map.  I'm not sure if there's a way for us to get 
Jackson to write it as a Map, bypassing the NamedList detection (avoid infinite 
recursion).
   
   CC @gerlowskija 



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