Compatibility issue between Pulsar Client Python 3.6.0 and Pulsar 4.0.2 and Databricks

[jamesvsshark]

There is a compatibility issue between the Pulsar Python client library version 3.6.0 and Pulsar server version 4.0.2 when used in Databricks.

Observed Issue

Pulsar Client Library Version: 3.5.0
Environment: Databricks notebook
Problem: Unable to connect and create a client.

Error Details
When using Pulsar client library version 3.6.0 in Databricks, the following error is encountered:

0000-00-00 00:00:00.000 INFO [0000-00-00 00:00:00.000 INFO [ERROR:__main__:Error connecting to Pulsar: Pulsar error: ConnectError 0000-00-00 00:00:00.000 INFO [0000-00-00 00:00:00.000 INFO [0000-00-00 00:00:00.000 INFO [0000-00-00 00:00:00.000 INFO [0000-00-00 00:00:00.000 INFO [0000-00-00 00:00:00.000 INFO [0000-00-00 00:00:00.000 INFO [0000-00-00 00:00:00.000 ERROR [0000-00-00 00:00:00.000 INFO [0000-00-00 00:00:00.000 INFO [0000-00-00 00:00:00.000 INFO [0000-00-00 00:00:00.000 INFO [0000-00-00 00:00:00.000 INFO [

Solution

Downgrading to Pulsar client library version 3.5.0 resolves the issue.

Current Pulsar Server Version: 4.0.2

[merlimat]

I just validated 3.6.0 Python client with 4.0.2 standalone and it works correctly.

The error you're seeing is a ConnectError, so it's possible that the serviceUrl you're trying to use is not the correct one.

[jamesvsshark]

I also have ran the 3.6.0
Python client against standalone without issue. The issue being reported is only occuring within the Azure Databricks environment.

[BewareMyPower]

There is a known issue for the compatibility with some Linux environments in 3.6.0. Could you try the 3.6.1 that is in vote currently? https://lists.apache.org/thread/s3qq7krzsl5lvsj7d0hg7c3xg251xhrd

[BewareMyPower]

Could you try 3.6.1?