acjohnson opened a new issue #11654:
URL: https://github.com/apache/pulsar/issues/11654
**Describe the bug**
After upgrading to Official Apache Pulsar 2.8.0 docker image we are now
seeing a flood of messages like this:
```
{"line":"22:48:42.086 [pulsar-client-io-51-1] ERROR
org.apache.pulsar.client.impl.ProducerImpl -
[persistent://public/functions/metadata]
[c-iauto-poc-fw-10.13.2.236-8080-leader] Failed to create producer:
org.apache.pulsar.broker.service.BrokerServiceException$ProducerFencedException:
Topic has an existing exclusive producer:
c-iauto-poc-fw-10.13.2.198-8080-leader\r","source":"stdout","tag":"81a71b1e87da"}
```
When this happens we are unable to deploy functions without restarting the
function workers/broker nodes
**To Reproduce**
```
docker run -d \
--name=pulsar-broker \
--env='PULSAR_MEM= -Xms10g -Xmx10g -XX:MaxDirectMemorySize=10g' \
--volume=/docker/pulsar-broker/pulsar-broker.conf:/pulsar/conf/broker.conf:rw \
--volume=/docker/pulsar-broker/pulsar-functions-worker.yml:/pulsar/conf/functions_worker.yml:rw
\
-p 6650:6650 \
-p 8080:8080 \
--restart=unless-stopped \
docker.io/apachepulsar/pulsar-all:2.8.0 bin/pulsar
```
Load it up with a bunch of go functions on 3 x i3.xlarge instances and watch
the exclusive producers messages flood your screen
**Expected behavior**
This exclusive producer message and deadlock issue did not appear on Pulsar
2.7.x
**Desktop (please complete the following information):**
Ubuntu 20.04 amd64 + Docker CE 20.10.7
**Additional context**
We've been working with several StreamNative people to diagnose this bug via
Slack. Please reach out to us there if you need any more info. Thank you!
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