Oscar Caraballo created AVRO-4012:
-------------------------------------
Summary: JSONDecoder do not evaluate if there is a default enum
value available.
Key: AVRO-4012
URL: https://issues.apache.org/jira/browse/AVRO-4012
Project: Apache Avro
Issue Type: Bug
Affects Versions: 1.11.3
Reporter: Oscar Caraballo
*Given* the following Schema:
{
"type": "record",
"name": "User",
"namespace": "com.example",
"fields": [
{
"name": "name",
"type": "string"
},
{
"name": "email",
"type": [
"null",
"string"
],
"default": null
},
{
"name": "status",
"type": {
"type": "enum",
"name": "Status",
"symbols": [
"ACTIVE",
"INACTIVE",
"UNKNOWN"
],
"default": "UNKNOWN"
},
"default": "UNKNOWN"
}
]
}
and Generating the avro classes with avro tools java -jar
./avro-tools-1.11.0.jar compile schema ./schema-v1.avsc .
and creating a json with a non existing enum value:
{"name":"John
Doe","email":\{"string":"[email protected]"},"status":"PENDING"}
*When* executing this test:
@Test
public void testJsonAgainstAvroSchemaDefault() throwsIOException {
// Load Avro schema
Schemaschema=newParser().parse(getFilesStream("schema.avsc"));
// Load JSON file
ObjectMappermapper=newObjectMapper();
JsonNodejsonNode=mapper.readTree(getFilesStream("example-2.json"));
// Convert JSON to Avro GenericRecord
Userrecord=jsonToAvro(jsonNode, schema);
// Validate the record
assertNotNull(record);
assertTrue(record.get("name").toString().equals("John Doe"));
assertTrue(record.get("email").toString().equals("[email protected]"));
assertTrue(record.get("status").toString().equals("UNKNOWN"));
}
*Then* this error is signalled:
org.apache.avro.AvroTypeException: Unknown symbol in enum PENDING
at
org.apache.avro.io.JsonDecoder.readEnum([JsonDecoder.java:331|vscode-file://vscode-app/Applications/Visual%20Studio%20Code.app/Contents/Resources/app/out/vs/code/electron-sandbox/workbench/workbench.html])
But according to avro specification
[https://avro.apache.org/docs/1.11.1/specification/#schema-resolution]
_"{*}if both are enums{*}: if the writer’s symbol is not present in the
reader’s enum and the reader has a default value, then that value is used,
otherwise an error is signalled."_
JSONDecoder should evaluate if there is a default enum value available.
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