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Posted to discuss-archive@mxnet.apache.org by DB via MXNet Forum <mx...@discoursemail.com.INVALID> on 2020/06/19 16:04:57 UTC

[MXNet Forum] Dataloader Error: AttributeError: 'NoneType' object has no attribute 'Pool'


Hi Team,

I get the error "AttributeError: 'NoneType' object has no attribute 'Pool'" after my training loop completes and before exiting the program in SageMaker.
My mxnet version is:
(mxnet_p36) sh-4.2$ pip list|grep mxnet
aws-mxnet-cu101mkl                 1.6.0
keras-mxnet                        2.2.4.2
mxnet-model-server                 1.0.8 

The training finishes successfully but the program fails to exit. 
Here is the detailed error:

Exception ignored in: <bound method DataLoader.__del__ of <mxnet.gluon.data.dataloader.DataLoader object at 0x7f45a99f9208>>
Traceback (most recent call last):
  File "/home/ec2-user/anaconda3/envs/mxnet_p36/lib/python3.6/site-packages/mxnet/gluon/data/dataloader.py", line 678, in __del__
AttributeError: 'NoneType' object has no attribute 'Pool'

Any thoughts on how I can debug this?
Thanks!





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