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https://issues.apache.org/jira/browse/ARROW-1450?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney reassigned ARROW-1450:
-----------------------------------
Assignee: Philipp Moritz
> [Python] Raise proper error if custom serialization handler fails
> -----------------------------------------------------------------
>
> Key: ARROW-1450
> URL: https://issues.apache.org/jira/browse/ARROW-1450
> Project: Apache Arrow
> Issue Type: Bug
> Reporter: Philipp Moritz
> Assignee: Philipp Moritz
> Fix For: 0.7.0
>
>
> At the moment, the following fails:
> {code:none}
> def test_serializaton_callback_error():
> class TempClass(object):
> pass
> # Have a SerializationContext but TempClass is not
> # registered
> serialization_context = pa.SerializationContext()
> with pytest.raises(pa.SerializationCallbackError):
> serialized_object = pa.serialize(TempClass, serialization_context)
> {code}
> This is because serialize will raise a generic ArrowException instead of a
> SerializationCallbackError. We do need the latter because it contains the
> object that couldn't be serialized, which is important to give good error
> messages; in the case of Ray we sometimes want use the object to register
> additional serialization callbacks on the fly to make the user experience
> smoother.
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