[jira] [Created] (AVRO-4265) Default values fail on forward references

[Oscar Westra van Holthe - Kind (Jira)]

Oscar Westra van Holthe - Kind created AVRO-4265:
----------------------------------------------------

             Summary: Default values fail on forward references
                 Key: AVRO-4265
                 URL: https://issues.apache.org/jira/browse/AVRO-4265
             Project: Apache Avro
          Issue Type: Bug
          Components: java
    Affects Versions: 1.12.1, 1.12.0
            Reporter: Oscar Westra van Holthe - Kind


This issue was reported in a [GitHub 
discussion|https://github.com/apache/avro/pull/3614#discussion_r3325140758] by 
[ebAtUelzener|https://github.com/ebAtUelzener]:

You can observe that the Gradle task fails with a cause inside the validation 
Schema.validateDefault:

{noformat}
org.gradle.api.tasks.TaskExecutionException: Execution failed for task 
':avroGenerateJavaClasses'
<gradle stack>
Caused by: org.apache.avro.AvroTypeException: Invalid default for field myEnum: 
"NONE" not a 
{"type":"record","name":"UnresolvedSchema_1","namespace":"org.apache.avro.compiler","doc":"unresolved
 schema","fields":[],"org.apache.avro.idl.unresolved.name":"some.MyEnum"}
        at org.apache.avro.Schema.validateDefault(Schema.java:1720)
        at org.apache.avro.Schema$Field.<init>(Schema.java:579)
        at org.apache.avro.Schema.parseField(Schema.java:1904)
        at org.apache.avro.Schema.parseRecord(Schema.java:1872)
        at org.apache.avro.Schema.parse(Schema.java:1836)
        at org.apache.avro.Schema$Parser.parse(Schema.java:1539)
        at org.apache.avro.Schema$Parser.parseInternal(Schema.java:1524)
        at org.apache.avro.JsonSchemaParser.parse(JsonSchemaParser.java:86)
        at org.apache.avro.JsonSchemaParser.parse(JsonSchemaParser.java:77)
        at org.apache.avro.SchemaParser.parse(SchemaParser.java:245)
        at org.apache.avro.SchemaParser.parse(SchemaParser.java:137)
        at org.apache.avro.SchemaParser.parse(SchemaParser.java:103)
        at org.apache.avro.SchemaParser.parse(SchemaParser.java:88)
        at 
eu.eventloopsoftware.avro.gradle.plugin.tasks.CompileAvroSchemaTask.compileSchemas(CompileAvroSchemaTask.kt:65)
        at 
eu.eventloopsoftware.avro.gradle.plugin.tasks.CompileAvroSchemaTask.compileSchema(CompileAvroSchemaTask.kt:42)
{noformat}

This can be reproduced (somewhat, depends on order they are sent to the parser) 
by having two files, an enum and a record like so:

Enum schema:
{code:json}
{
  "type": "enum",
  "name": "MyEnum",
  "namespace": "some",
  "symbols": [
    "SOME"
    "NONE"
  ]
}
{code}

Record schema:
{code:json}
{
  "type": "record",
  "name": "MyRecord",
  "namespace": "some",
  "fields": [
    {
        "name": "myEnum",
        "type": "MyEnum",
        "default": "NONE"
    }
  ]
}
{code}

Question is, is this a bug inside the {{avro-compiler}} package rather than an 
issue here and if so should the plugin accommodate for this bug in the meantime 
or not?




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