[jira] [Created] (BEAM-1901) Faling to re-raise exceptions

["Ahmet Altay (JIRA)" <ji...@apache.org>]

Ahmet Altay created BEAM-1901:
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             Summary: Faling to re-raise exceptions
                 Key: BEAM-1901
                 URL: https://issues.apache.org/jira/browse/BEAM-1901
             Project: Beam
          Issue Type: Bug
          Components: sdk-py
            Reporter: Ahmet Altay


In runners common.py {{reraise_augmented}} fails to re-raise exceptions in some case.

{{raise type(exn), args, sys.exc_info()[2]}}

The above code assumes that the Exception can be reconstructed from its arguments but this is not always true for custom exception classes. (e.g. {{RPCError}} in https://github.com/GoogleCloudPlatform/google-cloud-datastore/blob/master/python/googledatastore/connection.py#L226

This re-raising could first attempt to re-create the exception and if that does not fail raise otherwise raise the original exception as is.

(cc: [~robertwb])



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