tff.federated_computation(lambda: 'Hello World!')() stuck/hanging about federated

[zcharles8]

HI @Temitopeadekunle0906. Can you provide the details of your environment from the bug template? In particular:

Environment (please complete the following information):

• OS Platform and Distribution (e.g., Linux Ubuntu 16.04):
• Python package versions (e.g., TensorFlow Federated, TensorFlow):
• Python version:
• Bazel version (if building from source):
• CUDA/cuDNN version:
• What TensorFlow Federated execution stack are you using?

Note: You can collect the Python package information by running pip3 freeze
from the command line and most of the other information can be collected using
TensorFlows environment capture
script.

[zcharles8]

Oh, are you using colab by any chance? I just tried out some tutorials there and noticed the indefinite hang.

[zcharles8]

I ask because this might be a duplicate of #4588 if you are.

[Temitopeadekunle0906]

Yes, I'm using google colab

[zcharles8]

Okay, I'm marking this as a duplicate of #4588, and will use that issue to communicate about this. I can repro this issue, will start to investigate.

[Temitopeadekunle0906]

Thanks Charles. Anticipating a prompt resolution