apache / apache/pulsar

[Bug] Inconsistent behaviour for allowAutoTopicCreationType

Open
#21,376 1 comment 0 reactions 0 assignees View on GitHub
type/bug
Dominant language
Java
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Description

### Search before asking

- [X] I searched in the [issues](https://github.com/apache/pulsar/issues) and found nothing similar.

### Version

Run a standalone cluster in Docker

Pulsar: 3.1.0

### Minimal reproduce step

docker script environment
```
-e PULSAR_PREFIX_allowAutoTopicCreationType=partitioned
```

and none such env(thus default `non-partitioned`)

### What did you expect to see?

Both CreationType `should` auto create same RETRY/DLQ rule topic. `--RETRY`

ref:
https://github.com/apache/pulsar-site/pull/651
https://pulsar.apache.org/docs/3.1.x/concepts-messaging/#retry-letter-topic

### What did you see instead?

Write some code to consume topic, for example:

```
consumeFunc(topicname, subscriptionname, xxxHandler)
```

When using `non-partitioned` configuration server, it auto create topic as respected.

But when using `partitioned` config server, it auto create topic `subName-RETRY/DLQ` which may conflict when multi topics has same subName.

### Anything else?

_No response_

### Are you willing to submit a PR?

- [ ] I'm willing to submit a PR!

Contributor guide

Open the contributing guide

Research direction

Reproduce the behavior in a standalone Pulsar 3.1.0 Docker cluster using the consumeFunc entry point, first with PULSAR_PREFIX_allowAutoTopicCreationType=partitioned and then with the default non-partitioned setting. Compare the automatically created RETRY/DLQ topic names against the retry-letter-topic documentation and the expected --RETRY rule. Done means both creation types follow the same naming behavior without subscription-name conflicts.

Written by the indexing model from the issue text.

Assessment

Tech stack
docker, java
Domain
distributed-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
38/100

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