'grpc.experimental.aio' has no attribute 'StreamUnaryCall' due to PR#29 #40

gtoonstra · 2020-06-05T07:49:12Z

We observe a stack trace on one of our clusters due to a package upgrade, possibly introduced by the new release of python-api-core, which we don't pin to a specific version.

Due to PR#29, we now see the following error:

'grpc.experimental.aio' has no attribute 'StreamUnaryCall'

We will pin our version to the previous one, but documenting this here as it can affect other customers. Probably we should be pinning a more recent version of google.cloud libraries that are compatible, we're still researching this.

Environment details

OS type and version: image 1.4-ubuntu18 (GCP dataproc).
Python version: 3.6
pip version: pip --version
google-api-core version: 1.19.0

Steps to reproduce

See stack trace below, it happens on import bigquery client.

Stack trace

    from google.cloud import bigquery, bigquery_storage, storage
  File "/opt/conda/default/lib/python3.6/site-packages/google/cloud/bigquery/__init__.py", line 35, in <module>
    from google.cloud.bigquery.client import Client
  File "/opt/conda/default/lib/python3.6/site-packages/google/cloud/bigquery/client.py", line 58, in <module>
    from google.cloud.bigquery import _pandas_helpers
  File "/opt/conda/default/lib/python3.6/site-packages/google/cloud/bigquery/_pandas_helpers.py", line 25, in <module>
    from google.cloud import bigquery_storage_v1beta1
  File "/opt/conda/default/lib/python3.6/site-packages/google/cloud/bigquery_storage_v1beta1/__init__.py", line 26, in <module>
    from google.cloud.bigquery_storage_v1beta1 import client
  File "/opt/conda/default/lib/python3.6/site-packages/google/cloud/bigquery_storage_v1beta1/client.py", line 24, in <module>
    import google.api_core.gapic_v1.method
  File "/opt/conda/default/lib/python3.6/site-packages/google/api_core/gapic_v1/__init__.py", line 26, in <module>
    from google.api_core.gapic_v1 import method_async  # noqa: F401
  File "/opt/conda/default/lib/python3.6/site-packages/google/api_core/gapic_v1/method_async.py", line 20, in <module>
    from google.api_core import general_helpers, grpc_helpers_async
  File "/opt/conda/default/lib/python3.6/site-packages/google/api_core/grpc_helpers_async.py", line 145, in <module>
    class _WrappedStreamUnaryCall(_WrappedUnaryResponseMixin, _WrappedStreamRequestMixin, aio.StreamUnaryCall):
AttributeError: module 'grpc.experimental.aio' has no attribute 'StreamUnaryCall'

The text was updated successfully, but these errors were encountered:

gtoonstra · 2020-06-05T07:52:06Z

These are the version numbers of the relevant libraries that we pin down:

    "pandas==1.0.2",
    "google-cloud-bigquery==1.23.0",
    "google-cloud-bigquery-storage==0.7.0",
    "google-cloud-storage==1.23.0",
    "pyarrow==0.15.1",
    "grpcio==1.27.2",

KushGoyal · 2020-06-05T09:31:10Z

I am getting the same error.

As a workaround using an older version.
google-api-core==1.16.0

bchazalet · 2020-06-05T17:41:00Z

we too have been bitten by this in a cloud function. It was painful to track down.

fernandobrito · 2020-06-05T17:50:18Z

I just had a similar issue in our Google Cloud Composer environment.

Requirements:

boto3==1.11.17
snowflake-sqlalchemy~=1.2.0
google-cloud-bigquery-datatransfer~=0.4.1
pybigquery~=0.4.15
setuptools~=46.1.3
google-cloud-bigquery==1.24.0
docker==4.2.1

Everything was working fine until today when I added the last row and it triggered some versions bumps (last one was weeks/months ago).

The error manifested to me as:

  File "/home/airflow/gcs/dags/jobs_history/import_jobs_history.py", line 13, in <module>
    from google.cloud import bigquery_datatransfer_v1
  File "/opt/python3.6/lib/python3.6/site-packages/google/cloud/bigquery_datatransfer_v1/__init__.py", line 23, in <module>
    from google.cloud.bigquery_datatransfer_v1.gapic import data_transfer_service_client
  File "/opt/python3.6/lib/python3.6/site-packages/google/cloud/bigquery_datatransfer_v1/gapic/data_transfer_service_client.py", line 25, in <module>
    import google.api_core.gapic_v1.client_info
  File "/opt/python3.6/lib/python3.6/site-packages/google/api_core/gapic_v1/__init__.py", line 26, in <module>
    from google.api_core.gapic_v1 import method_async  # noqa: F401
  File "/opt/python3.6/lib/python3.6/site-packages/google/api_core/gapic_v1/method_async.py", line 20, in <module>
    from google.api_core import general_helpers, grpc_helpers_async
  File "/opt/python3.6/lib/python3.6/site-packages/google/api_core/grpc_helpers_async.py", line 25, in <module>
    from grpc.experimental import aio
ImportError: cannot import name 'aio'

The fix was to add google-api-core==1.17.0 to my requirements. 1.18.0 also causes the same error.

Google Cloud Composer composer-1.8.4-airflow-1.10.3
Python 3.6.8

busunkim96 · 2020-06-06T00:51:05Z

Sorry for the trouble this is causing folks! Please continue to use google-api-core==1.16.0 until this is resolved. (Alternatively, upgrading to the latest version of grpcio should also resolve the issue).

I suspect we need to increase the minimum required grpcio version. https://github.com/googleapis/python-api-core/blob/master/setup.py#L42

@lidizheng Could you help identify the minimum required version?

lidizheng · 2020-06-06T01:06:30Z

@busunkim96 The minimum version of grpcio for the latest release of google-api-core is v1.29.0. The new release of gRPC Python adds support for retry in AsyncIO, and fix some stability issue.

Sorry that I didn't add this constraint earlier. Here is a PR to bump up the minimum version: #41

busunkim96 · 2020-06-06T02:22:13Z

@lidizheng No worries, It slipped my mind as well. Thank you for the PR!

luogantt · 2020-11-18T08:16:34Z

pip install google-api-core==1.16

solve the problem

ZhengxunWu · 2021-07-22T05:26:11Z

@busunkim96 The minimum version of grpcio for the latest release of google-api-core is v1.29.0. The new release of gRPC Python adds support for retry in AsyncIO, and fix some stability issue.

Sorry that I didn't add this constraint earlier. Here is a PR to bump up the minimum version: #41

Hi, but even if I upgraded to grpcio v1.36.1, still have the same error. Have been trying to fix it for quite a long time.
Relevant packages:

google-api-core           1.22.2           py37h21ff451_0
google-auth               1.25.0             pyh44b312d_0    conda-forge
google-cloud-bigquery     1.22.0                   py37_0    conda-forge
google-cloud-bigquery-storage 0.6.0                    py37_0    conda-forge
google-cloud-core         1.3.0                      py_0
google-pasta              0.2.0                      py_0
google-resumable-media    0.5.1              pyh9f0ad1d_0    conda-forge
googleapis-common-protos  1.52.0           py37h2eaa2aa_0

lidizheng · 2021-07-22T17:40:59Z

@ZhengxunWu Hi, can you try to upgrade all packages to the latest version and try again? Also, what Python interpretor version did you use?

We tried hard to make sure there isn't any regression when we move gRPC AsyncIO API to stable a year ago. There might be something changed in Python's import mechanism.

pramodh941 · 2021-08-01T13:00:13Z

I am facing the same issue. To summarise from the above workaround suggestions:

pin our version to the previous one (google-api-core==1.16.0), but the current version I have is (google-api-core-1.31.1). I got this error message {ImportError: cannot import name 'grpc_helpers_async' from 'google.api_core' (/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/google/api_core/init.py)} when I switched to (google-api-core==1.16.0) @luogantt
Alternatively, upgrading to the latest version of grpcio should also resolve the issue, I have this version if I am pointing this correctly: {grpcio<2.0.0dev,>=1.0.0 in /Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages (from grpc-google-iam-v1<0.13dev,>=0.12.3->google-cloud-container>=0.3.0->caliban) (1.27.2)}
@lidizheng , I am using Python version 3.8 . Could you help me understand how do I resolve this issue?

Please find attached terminal report
caliban.pdf

lidizheng · 2021-08-02T20:16:27Z

@pramodh941 According to GitHub, the grpcio version restriction is only added for google-api-core>=1.19.1. And, what you are getting is an old version before the initial asyncio support.

Can I ask if it is possible to use the latest google-api-core? If not, what is blocking it?

pramodh941 · 2021-08-02T20:23:15Z

@lidizheng yeah, I tried initially with the latest version 1.31.1, but it's not working.

If you take a look at the attached pdf file with the terminal report, you will find the detailed error message while using with the old and latest versions

lidizheng · 2021-08-02T20:26:45Z

Sorry about that. I saw the import namespace error, as well as the asyncio helper import error.

busunkim96 · 2021-08-03T00:02:16Z

@pramodh941 Could you try installing in a brand new virtual environment?

python3 -m venv env
source env/bin/activate
pip install caliban

In the first bit of the log it looks like an older version of grpcio (1.27.2) is being used:

Requirement already satisfied: grpcio<2.0.0dev,>=1.0.0 in /Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages (from grpc-google-iam-v1<0.13dev,>=0.12.3->google
-cloud-container>=0.3.0->caliban) (1.27.2)

To be extra sure, you can also check the grpcio version used at runtime:

import grpc
print(grpc.__version__)

I'm not sure why pip wouldn't upgrade grpcio==1.27.2 when google-cloud-container is installed though. The latest google-cloud-container requires google-api-core>=1.26.0, <3.0.0dev which would in turn require a version of grpcio (grpcio >= 1.29.0, < 2.0dev) with the grpc.experimental.aio surface.

yoshi-automation added the triage me I really want to be triaged. label Jun 5, 2020

busunkim96 added priority: p1 Important issue which blocks shipping the next release. Will be fixed prior to next release. type: bug Error or flaw in code with unintended results or allowing sub-optimal usage patterns. and removed triage me I really want to be triaged. labels Jun 6, 2020

lidizheng mentioned this issue Jun 6, 2020

fix: Bump up grpcio minimum version #41

Merged

busunkim96 closed this as completed in #41 Jun 6, 2020

davidyan74 mentioned this issue Jun 12, 2020

[BEAM-10247] Pin google-api-core to 1.20.0 apache/beam#11996

Merged

4 tasks

Ryan-Lintern mentioned this issue Jun 24, 2020

AttributeError: module 'grpc.experimental.aio' has no attribute 'StreamUnaryCall' googleapis/python-datacatalog#44

Closed

pradn mentioned this issue Aug 12, 2020

AttributeError: module 'grpc.experimental.aio' has no attribute 'Call' googleapis/python-pubsub#173

Closed

shuklak13 mentioned this issue Aug 13, 2020

bug(example): README example not working tensorflow/model-card-toolkit#4

Closed

JustinBeckwith assigned busunkim96 Feb 2, 2021

e-baumer mentioned this issue Jun 17, 2021

AttributeError: module 'grpc.experimental.aio' has no attribute 'StreamUnaryCall' #213

Closed

lidizheng mentioned this issue Jul 22, 2021

fix: bump grpcio version to use stable aio API #234

Merged

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'grpc.experimental.aio' has no attribute 'StreamUnaryCall' due to PR#29 #40

'grpc.experimental.aio' has no attribute 'StreamUnaryCall' due to PR#29 #40

gtoonstra commented Jun 5, 2020 •

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busunkim96 commented Aug 3, 2021

'grpc.experimental.aio' has no attribute 'StreamUnaryCall' due to PR#29 #40

'grpc.experimental.aio' has no attribute 'StreamUnaryCall' due to PR#29 #40

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gtoonstra commented Jun 5, 2020 • edited Loading

Environment details

Steps to reproduce

Stack trace

gtoonstra commented Jun 5, 2020

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