Python Dependency issue: Issues installing opencv

Hello.

I’m having issues installing opencv. I’m publishing my function through the CLI using the following command:

func azure functionapp publish testPSA2 --build-native-deps

The publishing is not a problem and it worked just fine a couple of months ago, but when I got back to the project to make some changes I get the following error when running the function:

2019-05-07T08:11:27.146 [Error] Executed 'Functions.processImageEvent' (Failed, Id=316890eb-95ed-4eda-8ed4-b1136a758b1c)
Result: Failure
Exception: ImportError: libgthread-2.0.so.0: cannot open shared object file: No such file or directory
Stack:   File "/home/site/wwwroot/worker_venv/lib/python3.6/site-packages/azure/functions_worker/dispatcher.py", line 203, in _handle__function_load_request
    func_request.metadata.entry_point)
  File "/home/site/wwwroot/worker_venv/lib/python3.6/site-packages/azure/functions_worker/loader.py", line 66, in load_function
    mod = importlib.import_module(fullmodname)
  File "/usr/local/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 941, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/site/wwwroot/processImageEvent/__init__.py", line 3, in <module>
    import cv2
  File "/home/site/wwwroot/worker_venv/lib/python3.6/site-packages/cv2/__init__.py", line 3, in <module>
    from .cv2 import *

My requirements.txt looks the following:

asn1crypto==0.24.0
azure-common==1.1.17
azure-cosmosdb-nspkg==2.0.2
azure-cosmosdb-table==1.0.5
azure-functions==1.0.0a5
azure-functions-worker==1.0.0a6
azure-nspkg==3.0.2
azure-storage-blob==1.4.0
azure-storage-common==1.4.0
certifi==2018.11.29
cffi==1.11.5
chardet==3.0.4
cryptography==2.5
grpcio==1.14.2
grpcio-tools==1.14.2
idna==2.8
numpy==1.15.4
opencv-python==3.4.5.20
protobuf==3.6.1
pycparser==2.19
python-dateutil==2.7.5
requests==2.21.0
scipy==1.2.0
six==1.12.0
urllib3==1.24.1

I have posted a similar issue here, deploying jobs to a GPU cluster using Azure ML SDK: https://github.com/Azure/MachineLearningNotebooks/issues/252#issuecomment-478838718

Have anyone encountered a fix? if so please let me know. The opencv package is critical to a lot of my algorithms.

Best Regards Niels

[guilhermesurek]

I’m having the same issue working with azure webapp deploying in a Linux environment, Is there any update?

[horihiro]

Thanks @anirudhgarg

I confirmed that opencv-python-headless which needs less libraries than opencv-python works on python function app of consumption plan so it seems that libgthread-2.0.so.0 and libglib-2.0.so.0 are installed.