HJK181 commented on issue #7262:
URL: https://github.com/apache/pinot/issues/7262#issuecomment-896515115


   @yupeng9 Indeed `kpis` is not a record, it's a map. Do I need complexType 
config for a map?
   Actually, we have two avro files in our project referencing each other:
   query.avsc
   ```
   {
       "namespace": "foo.bar.v1",
       "type": "record",
       "name": "MappedQuery",
       "fields": [
           {"name": "userQuery", "type": "string"},
           {"name": "masterQuery",  "type": [ "null", "string"]},
           {"name": "mappingTime", "type": "long", "order": "ignore"}
       ]
   }
   ```
   kpi.avsc
   ```
   {
       "namespace": "foo.bar.v1",
       "name": "queryKpis",
       "type": "array",
       "items": {
           "namespace": "foo.bar.v1",
           "name": "QueryWithKpis",
           "type": "record",
           "fields": [
               {
                   "name": "query",
                   "type": "foo.bar.MappedQuery"
               },
               {
                   "name": "kpis",
                   "type": {
                       "type": "map",
                       "values": "double"
                   }
               }
           ]
       }
   }
   ```
   The avro schema of my initial post is the result of calling `avro cat 
--print-schema` for the sample data above.


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