generate unique new SpecificData for every generated class for MODEL$
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- Dominant language
- Java
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Description
we currently generate
MODEL$ = SpecificData.get();
while vanilla (modern) avro generates
MODEL$ = new SpecificData();
but under 1.11.0 this can cause deadlocks over access to classcache. upstream avro might have fixed this in https://issues.apache.org/jira/browse/AVRO-3243 but we should move to unique MODEL$s if possible.
this would mean a helper method to create a new SpecificData if possibe given avro runtime version
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by tracing where generated classes assign MODEL$ and review the SpecificData usage described in the issue, including the linked AVRO-3243 context. Determine how the helper can select a new SpecificData across supported Avro runtime versions; done means generated classes use unique MODEL$ instances where possible without breaking compatibility or reintroducing classcache deadlocks.
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
- Mostly clear
- Newbie friendliness
- 35/100