Via the python client I am unable to consume messages with a multi-topic regex consumer

[matansh]

Describe the bug
Via the python client I am unable to consume messages with a multi-topic regex consumer

To Reproduce
Steps to reproduce the behavior:

1. bring up pulsar standalone instance via docker

docker run -it -p 80:80 -p 8080:8080 -p 6650:6650 apachepulsar/pulsar-standalone

2. init python client

pulsar_client = pulsar.Client('pulsar://localhost:6650')

3. create subscriber

consumer = pulsar_client.subscribe(re.compile('test_.*'), 'sub1')

4. create producer

producer = pulsar_client.create_producer('test_1')

5. via 2 different python instances / threads / processes attempt to send + read

while Ture:
    producer.send(b'test')

consumer.receive()

6. ERROR: consumer never received any messages

Expected behavior
topic test_1 should be read by subscription test_.*

Desktop (please complete the following information):

• OS: mac OS (pulsar running in docker)
• pulsar version: latest master from docker (should be 2.2.0?)
• python version: 3.7
• pulsar-client (pip lib) version: 2.3.0.post1 (latest)

[matansh]

update:
just found a workaround!
if i change my code to contain the full topic path it works.

consumer = pulsar_client.subscribe(re.compile('persistent://public/default/test_.*'), 'sub1')
producer = pulsar_client.create_producer('persistent://public/default/test_1')

I guess the doc's should at least reflect this, or even better fixing the "shorter" syntax

[grantwwu]

We just ran into this as well :(

[Jennifer88huang-zz]

@matansh @grantwwu We're fixing the issue in #6050. You can check the update in #6050. If there is any issue with it, feel free to comment.

[grantwwu]

Unfortunately, I have moved on from my employer which uses Pulsar. But thanks, anyways, for the fix!