[GitHub] [pulsar] thlautenschlaeger commented on issue #5912: "UNAVAILABLE: io exception" pulsar functions

[GitBox <gi...@apache.org>]

thlautenschlaeger commented on issue #5912: "UNAVAILABLE: io exception" pulsar functions
URL: https://github.com/apache/pulsar/issues/5912#issuecomment-568170225
 
 
   Pulsar client is already installed. Got the newest version running
   `Python pulsar version : 2.4.2`
   Also checked my log.
   Pulsar is not finding the class WordCountFunction. Checked the name and everything. but it's not working.
   
   `excfunc-0.log` shows:
   ```
   10:03:54.137 [main] INFO  org.apache.pulsar.functions.runtime.ProcessRuntimeFactory - Java instance jar location is not defined, using the location defined in system environment : /home/vagrant/apache-pulsar-2.4.2/instances/java-instance.jar
   10:03:54.153 [main] INFO  org.apache.pulsar.functions.runtime.ProcessRuntimeFactory - Python instance file location is not defined using the location defined in system environment : /home/vagrant/apache-pulsar-2.4.2/instances/python-instance/python_instance_main.py
   10:03:54.154 [main] INFO  org.apache.pulsar.functions.runtime.ProcessRuntimeFactory - No extra dependencies location is defined in either function worker config or system environment
   10:03:54.268 [main] INFO  org.apache.pulsar.functions.runtime.RuntimeSpawner - test/test/excfunc-0 RuntimeSpawner starting function
   ModuleNotFoundError: No module named 'WordCountFunction'
   
   During handling of the above exception, another exception occurred:
   
   Traceback (most recent call last):
     File "/home/vagrant/apache-pulsar-2.4.2/instances/python-instance/util.py", line 46, in import_class
       return import_class_from_path(api_dir, full_class_name)
     File "/home/vagrant/apache-pulsar-2.4.2/instances/python-instance/util.py", line 61, in import_class_from_path
       mod = importlib.import_module(class_name)
     File "/usr/local/lib/python3.7/importlib/__init__.py", line 127, in import_module
       return _bootstrap._gcd_import(name[level:], package, level)
     File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
     File "<frozen importlib._bootstrap>", line 983, in _find_and_load
     File "<frozen importlib._bootstrap>", line 965, in _find_and_load_unlocked
   ModuleNotFoundError: No module named 'WordCountFunction'
   [2019-12-21 10:03:54 +0000] [CRITICAL] python_instance.py: Could not import User Function Module WordCountFunction
   [2019-12-21 10:03:54 +0000] [ERROR] log.py: Traceback (most recent call last):
   [2019-12-21 10:03:54 +0000] [ERROR] log.py:   File "/home/vagrant/apache-pulsar-2.4.2/instances/python-instance/python_instance_main.py", line 211, in <module>
   [2019-12-21 10:03:54 +0000] [ERROR] log.py: main()
   [2019-12-21 10:03:54 +0000] [ERROR] log.py:   File "/home/vagrant/apache-pulsar-2.4.2/instances/python-instance/python_instance_main.py", line 192, in main
   [2019-12-21 10:03:54 +0000] [ERROR] log.py: pyinstance.run()
   [2019-12-21 10:03:54 +0000] [ERROR] log.py:   File "/home/vagrant/apache-pulsar-2.4.2/instances/python-instance/python_instance.py", line 196, in run
   [2019-12-21 10:03:54 +0000] [ERROR] log.py: raise NameError("Could not import User Function Module %s" % self.instance_config.function_details.className)
   [2019-12-21 10:03:54 +0000] [ERROR] log.py: NameError
   [2019-12-21 10:03:54 +0000] [ERROR] log.py: :
   [2019-12-21 10:03:54 +0000] [ERROR] log.py: Could not import User Function Module WordCountFunction
   
   ```
   
   Do I need to place the python script that contains the `WordCountFunction` class in a specific location or do is special python setup necessary for pulsar?

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