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https://issues.apache.org/jira/browse/BEAM-6838?focusedWorklogId=216555&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-216555
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ASF GitHub Bot logged work on BEAM-6838:
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Author: ASF GitHub Bot
Created on: 21/Mar/19 00:16
Start Date: 21/Mar/19 00:16
Worklog Time Spent: 10m
Work Description: youngoli commented on issue #8064: [BEAM-6838] Go SDK:
Improving error msgs in pipeline serialization.
URL: https://github.com/apache/beam/pull/8064#issuecomment-475076149
There definitely is a lot of repetition with the recursion, even before my
changes. Though I'm not sure how to avoid that really. While it's a lot of
information for users, it's important for debugging. Only alternative I can
think of is adding some debug logs instead of some errors, so users can see the
path being taken by examining logs.
Here's a real-world example I've been using to test (I replaced the proto
name though)
> failed to encode custom coder: bad underlying type: bad element: bad field
type: bad element: bad element: bad field type: bad element: bad field type:
bad element: bad element: bad field type: bad field type: bad element: bad
field type: unencodable type: protoapi.extensionMap
And the new error:
> Failed to encode custom coder for type protoapi.Message. Make sure the
type was registered before calling beam.Init. For example:
beam.RegisterType(reflect.TypeOf((*TypeName)(nil)).Elem())
>
> Full error: failed to encode custom coder
*my_package.MyProto[protoapi.Message], bad underlying type: failed to encode
pointer *my_package.MyProto, bad base type: failed to encode struct
my_package.MyProto, bad field type: failed to encode pointer
*my_package.MyProto_MyField, bad base type: failed to encode struct
my_package.MyProto_MyField, bad field type: unencodable type
map[int32]protoapi.Message
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Issue Time Tracking
-------------------
Worklog Id: (was: 216555)
Time Spent: 7h 20m (was: 7h 10m)
> Improve error messages for unregistered protos
> ----------------------------------------------
>
> Key: BEAM-6838
> URL: https://issues.apache.org/jira/browse/BEAM-6838
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-go
> Reporter: Daniel Oliveira
> Assignee: Daniel Oliveira
> Priority: Minor
> Time Spent: 7h 20m
> Remaining Estimate: 0h
>
> When users have a type that can't be serialized (it has a function Field or
> similar) or more complex protocol buffers, the error should be improved to
> display the type being registered, and better yet, the beam.RegisterType(...)
> code they can use to enable use of their type.
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