heesung-sn opened a new pull request, #20554:
URL: https://github.com/apache/pulsar/pull/20554
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### Motivation
Found a partition metadata inconsistency bug due to the racing condition
between forceful deletion of the partitioned topic and the topic partition
auto-creation from the consumer's re-connection.
When there is a delete-partitioned-topic command with the force=true for a
partitioned topic, the existing subscriptions reconnect, which recreates the
topic partition. Meanwhile, the partitioned topic(the root topic) is removed
from the metadata.
Issue reproduction step:
1. run broker
`bin/pulsar standalone`
2. run consumer
```
bin/pulsar-admin tenants create my-tenant
bin/pulsar-admin namespaces create my-tenant/my-namespace --bundles 5
bin/pulsar-admin topics create-partitioned-topic
persistent://my-tenant/my-namespace/my-topic -p 2
bin/pulsar-client consume -s sub-read
persistent://my-tenant/my-namespace/my-topic -p Earliest -n 0
```
3. delete the partitioned topic
`bin/pulsar-admin topics delete-partitioned-topic
persistent://my-tenant/my-namespace/my-topic --force`
4. check topics
```
curl -X GET http://localhost:8080/admin/v2/persistent/my-tenant/my-namespace
["persistent://my-tenant/my-namespace/my-topic-partition-0","persistent://my-tenant/my-namespace/my-topic-partition-1"]%
curl -X GET
http://localhost:8080/admin/v2/persistent/my-tenant/my-namespace/partitioned
[]%
```
5. check the topic creation fails
```
bin/pulsar-admin topics create-partitioned-topic
persistent://my-tenant/my-namespace/my-topic -p 2
2023-06-09T17:55:01,664-0700 [AsyncHttpClient-7-1] WARN
org.apache.pulsar.client.admin.internal.BaseResource -
[http://localhost:8080/admin/v2/persistent/my-tenant/my-namespace/my-topic/partitions?createLocalTopicOnly=false]
Failed to perform http put request: javax.ws.rs.ClientErrorException: HTTP 409
This topic already exists
This topic already exists
Reason: This topic already exists
```
### Modifications
- return isPartitionedTopicBeingDeletedAsync true when a partitioned topic
metadata
### Verifying this change
- [x] Make sure that the change passes the CI checks.
This change is already covered by existing tests, such as *(please describe
tests)*.
### Does this pull request potentially affect one of the following parts:
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- [ ] Dependencies (add or upgrade a dependency)
- [ ] The public API
- [ ] The schema
- [ ] The default values of configurations
- [ ] The threading model
- [ ] The binary protocol
- [ ] The REST endpoints
- [ ] The admin CLI options
- [ ] The metrics
- [ ] Anything that affects deployment
### Documentation
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- [ ] `doc-complete` <!-- Docs have been already added -->
### Matching PR in forked repository
PR in forked repository: not provided as this is a trivial fix
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