handle JsonNodes as arguments for default values in FieldBuilders
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- Dominant language
- Java
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Description
otherwise:
```
Unknown datum class: class com.fasterxml.jackson.databind.node.IntNode
org.apache.avro.AvroRuntimeException: Unknown datum class: class com.fasterxml.jackson.databind.node.IntNode
at org.apache.avro.util.internal.JacksonUtils.toJson(JacksonUtils.java:96)
at org.apache.avro.util.internal.JacksonUtils.toJsonNode(JacksonUtils.java:53)
at org.apache.avro.Schema$Field.(Schema.java:591)
at com.linkedin.avroutil1.compatibility.avro110.FieldBuilder110.build(FieldBuilder110.java:109)
at com.linkedin.avroutil1.compatibility.AvroCompatibilityHelper.createSchemaField(AvroCompatibilityHelper.java:1012)
at com.linkedin.avroutil1.compatibility.AvroCompatibilityHelper.createSchemaField(AvroCompatibilityHelper.java:1016)
```
ideally we deserialize the json using the schema for the field
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with FieldBuilder110.build in FieldBuilder110.java and the createSchemaField entry points in AvroCompatibilityHelper.java, then trace the JacksonUtils failure shown in the report. Confirm how a JsonNode default is converted using the field schema; done means FieldBuilders accept these defaults without the reported Unknown datum class exception.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- tooling
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100