[AVRO-2879] Builder.build fails when enum has a default value

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: java
• Assignee: Unassigned
• Reporter: Michael Nielson
• Created: 02/Jul/20 19:35
• Updated: 02/Jul/20 19:35

Description

I would expect this schema to allow building an Avro Issue without providing a value for severity but it fails:

{
  "protocol" : "Protocol",
  "namespace" : "com.namespace",
  "types" : [ {
    "type" : "record",
    "name" : "Issue",
    "fields" : [ {
      "name" : "id",
      "type" : "string"
    }, {
      "name" : "severity",
      "type" : {
        "type" : "enum",
        "name" : "Severity",
        "symbols" : [ "Unknown", "Mild", "Moderate", "Severe" ],
        "default" : "Unknown"
      }
    } ]
  } ],
  "messages" : { }
}

Issue.newBuilder().setId("someId").build();

Error:

Field severity type:ENUM pos:4 not set and has no default value
Path in schema: --> severity
	at org.apache.avro.generic.GenericData.getDefaultValue(GenericData.java:1173)
	at org.apache.avro.data.RecordBuilderBase.defaultValue(RecordBuilderBase.java:142)