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https://issues.apache.org/jira/browse/AVRO-2270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Qing Wang updated AVRO-2270:
----------------------------
    Description: 
Auto generated Avro schema with fields have union type including null, can not 
be assigned to a non-null default value. The reason is Avro set null as the 
first type in the union .see [the source code 
|https://github.com/apache/avro/blob/master/lang/java/avro/src/main/java/org/apache/avro/reflect/ReflectData.java]
  line 694   // add null as the first type in a new union.

Based on the [Avro doc|[https://avro.apache.org/docs/1.8.1/spec.html#Unions]] [ 
Avro doc||[https://avro.apache.org/docs/1.8.1/spec.html#Unions]]the type of the 
default value must match the _first_ element of the union. 

 

  was:
Auto generated Avro schema with fields have union type including null, can not 
be assigned to a non-null default value. The reason is Avro set null as the 
first type in the union .see [the source code 
|https://github.com/apache/avro/blob/master/lang/java/avro/src/main/java/org/apache/avro/reflect/ReflectData.java]
  line 694   // add null as the first type in a new union.

Based on the [Avro doc|[https://avro.apache.org/docs/1.8.1/spec.html#Unions]]  
the type of the default value must match the _first_ element of the union. 

 


> Can not set non-null default value for Auto generated Arvo Schema with field 
> include null type
> ----------------------------------------------------------------------------------------------
>
>                 Key: AVRO-2270
>                 URL: https://issues.apache.org/jira/browse/AVRO-2270
>             Project: Apache Avro
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 1.8.2
>            Reporter: Qing Wang
>            Priority: Major
>
> Auto generated Avro schema with fields have union type including null, can 
> not be assigned to a non-null default value. The reason is Avro set null as 
> the first type in the union .see [the source code 
> |https://github.com/apache/avro/blob/master/lang/java/avro/src/main/java/org/apache/avro/reflect/ReflectData.java]
>   line 694   // add null as the first type in a new union.
> Based on the [Avro doc|[https://avro.apache.org/docs/1.8.1/spec.html#Unions]] 
> [ Avro doc||[https://avro.apache.org/docs/1.8.1/spec.html#Unions]]the type of 
> the default value must match the _first_ element of the union. 
>  



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