John Pao created TINKERPOP-2763:
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Summary: client.submitAsync returns None value
Key: TINKERPOP-2763
URL: https://issues.apache.org/jira/browse/TINKERPOP-2763
Project: TinkerPop
Issue Type: Bug
Components: driver, python
Affects Versions: 3.5.3, 3.5.2
Reporter: John Pao
In gremlin-python driver versions 3.5.2 and 3.5.3, the client.submit_async()
function was added and the client.submitAsync() function was changed to call
into it and warn about future deprecation.
The line in submitAsync which invokes the new function submit_async does not
return the future back to the caller, resulting in the caller receiving a None
object.
[https://github.com/apache/tinkerpop/blob/8b30b63d00630d3b6c6bd170e8168aed7c69abff/gremlin-python/src/main/python/gremlin_python/driver/client.py#L152]
This in turn means that an application which upgrades from 3.4.x to latest
3.5.x will break when trying to read result from the response future.
> AttributeError: 'NoneType' object has no attribute 'result'
This issue is fixed in 3.6.x with the addition of an explicit return statement,
but has persisted from driver version 3.5.2 to 3.5.3.
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