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Posted to issues@beam.apache.org by "Chad Dombrova (Jira)" <ji...@apache.org> on 2019/09/07 00:16:00 UTC

[jira] [Created] (BEAM-8172) Add a label field to FunctionSpec proto

Chad Dombrova created BEAM-8172:
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             Summary: Add a label field to FunctionSpec proto
                 Key: BEAM-8172
                 URL: https://issues.apache.org/jira/browse/BEAM-8172
             Project: Beam
          Issue Type: Improvement
          Components: beam-model
            Reporter: Chad Dombrova
            Assignee: Chad Dombrova


The FunctionSpec payload is opaque outside of the native environment, which can make debugging pipeline protos difficult.  It would be very useful if the FunctionSpec had an optional human readable "label", for debugging and presenting in UIs and error messages.

For example, in python, if the payload is an instance of a class, we could attempt to provide a string that represents the dotted path to that class, "mymodule.MyClass".  In the case of coders, we could use the label to hold the type hint:  "Optional[Iterable[mymodule.MyClass]]".




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