[ 
https://issues.apache.org/jira/browse/AVRO-2137?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Arun sethia updated AVRO-2137:
------------------------------
    Description: 
I have following avro schema

 

<code:json>

{
 "type": "record",
 "name": "test",
 "namespace": "test.name",
 "fields": [
 {
 "name": "items",
 "type": {
 "type": "array",
 "items": {
 "type": "record",
 "name": "items",
 "fields": [
 {
 "name": "name",
 "type": "string"
 },
 {
 "name": "state",
 "type": "string"
 }
 ]
 }
 }
 },
 {
 "name": "firstname",
 "type": "string"
 }
 ]
}

</code:json> 

when I am using Json decoder and avro encoder to encode Json data (scala code):

 

_val writer = new GenericDatumWriter[GenericRecord](schema)_

_val reader = new GenericDatumReader[GenericRecord](schema)_

_val baos = new ByteArrayOutputStream_

_val decoder: JsonDecoder = DecoderFactory.get.jsonDecoder(schema, json)_

_val encoder = EncoderFactory.get.binaryEncoder(baos, null)_

_val datum = reader.read(null, decoder) writer.write(datum, encoder)_

_encoder.flush()_

_val avroByteArray = baos.toByteArray_

 

*scenario1:* when I am passing following json to encode it works fine:

 { "items": [ 

{ "name": "dallas", "state": "TX" }

], "firstname":"arun"}

 *scenario2:* when I am passing additional attribute in json at root level 
(lastname) it is able to encode and works fine:

 { "items": [

{ "name": "dallas", "state": "TX" }

], "firstname":"fname", "lastname":"lname"}

*scenario3*: when I am add additional attribute in array record (country) it is 
throwing following exception:

Expected record-end. Got FIELD_NAME org.apache.avro.AvroTypeException: Expected 
record-end. Got FIELD_NAME at 
org.apache.avro.io.JsonDecoder.error(JsonDecoder.java:698) { "items": [

{ "name": "dallas", "state": "TX", "country":"USA" }

], "firstname":"fname", "lastname":"lname" }

 In case of if we have any additional element in array type, it should work in 
same way as normal record; it should just discard them and decode the Json data.

  was:
I have following avro schema

{ "type":"record", "name":"test", "namespace":"test.name",

"fields":[

               {"name":"items","type":

                    {"type":"array", "items":

                           {"type":"record","name":"items", "fields":

                               [

                                   \{"name":"name","type":"string"},

                                   \{"name":"state","type":"string"}

                              ]

                         }

                 }

           }

        , \{"name":"firstname","type":"string"}

       ]

}

 

when I am using Json decoder and avro encoder to encode Json data (scala code):

 

_val writer = new GenericDatumWriter[GenericRecord](schema)_

_val reader = new GenericDatumReader[GenericRecord](schema)_

_val baos = new ByteArrayOutputStream_

_val decoder: JsonDecoder = DecoderFactory.get.jsonDecoder(schema, json)_

_val encoder = EncoderFactory.get.binaryEncoder(baos, null)_

_val datum = reader.read(null, decoder) writer.write(datum, encoder)_

_encoder.flush()_

_val avroByteArray = baos.toByteArray_

 

*scenario1:* when I am passing following json to encode it works fine:

 \{ "items": [ { "name": "dallas", "state": "TX" }], "firstname":"arun"}

 *scenario2:* when I am passing additional attribute in json at root level 
(lastname) it is able to encode and works fine:

 \{ "items": [{ "name": "dallas", "state": "TX" }], "firstname":"fname", 
"lastname":"lname"}

*scenario3*: when I am add additional attribute in array record (country) it is 
throwing following exception:

Expected record-end. Got FIELD_NAME org.apache.avro.AvroTypeException: Expected 
record-end. Got FIELD_NAME at 
org.apache.avro.io.JsonDecoder.error(JsonDecoder.java:698) \{ "items": [ { 
"name": "dallas", "state": "TX", "country":"USA" } ], "firstname":"fname", 
"lastname":"lname" }

 In case of if we have any additional element in array type, it should work in 
same way as normal record; it should just discard them and decode the Json data.


> avro JsonDecoding additional field in array type
> ------------------------------------------------
>
>                 Key: AVRO-2137
>                 URL: https://issues.apache.org/jira/browse/AVRO-2137
>             Project: Avro
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 1.8.1
>            Reporter: Arun sethia
>            Priority: Major
>
> I have following avro schema
>  
> <code:json>
> {
>  "type": "record",
>  "name": "test",
>  "namespace": "test.name",
>  "fields": [
>  {
>  "name": "items",
>  "type": {
>  "type": "array",
>  "items": {
>  "type": "record",
>  "name": "items",
>  "fields": [
>  {
>  "name": "name",
>  "type": "string"
>  },
>  {
>  "name": "state",
>  "type": "string"
>  }
>  ]
>  }
>  }
>  },
>  {
>  "name": "firstname",
>  "type": "string"
>  }
>  ]
> }
> </code:json> 
> when I am using Json decoder and avro encoder to encode Json data (scala 
> code):
>  
> _val writer = new GenericDatumWriter[GenericRecord](schema)_
> _val reader = new GenericDatumReader[GenericRecord](schema)_
> _val baos = new ByteArrayOutputStream_
> _val decoder: JsonDecoder = DecoderFactory.get.jsonDecoder(schema, json)_
> _val encoder = EncoderFactory.get.binaryEncoder(baos, null)_
> _val datum = reader.read(null, decoder) writer.write(datum, encoder)_
> _encoder.flush()_
> _val avroByteArray = baos.toByteArray_
>  
> *scenario1:* when I am passing following json to encode it works fine:
>  { "items": [ 
> { "name": "dallas", "state": "TX" }
> ], "firstname":"arun"}
>  *scenario2:* when I am passing additional attribute in json at root level 
> (lastname) it is able to encode and works fine:
>  { "items": [
> { "name": "dallas", "state": "TX" }
> ], "firstname":"fname", "lastname":"lname"}
> *scenario3*: when I am add additional attribute in array record (country) it 
> is throwing following exception:
> Expected record-end. Got FIELD_NAME org.apache.avro.AvroTypeException: 
> Expected record-end. Got FIELD_NAME at 
> org.apache.avro.io.JsonDecoder.error(JsonDecoder.java:698) { "items": [
> { "name": "dallas", "state": "TX", "country":"USA" }
> ], "firstname":"fname", "lastname":"lname" }
>  In case of if we have any additional element in array type, it should work 
> in same way as normal record; it should just discard them and decode the Json 
> data.



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