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Posted to github@beam.apache.org by GitBox <gi...@apache.org> on 2021/10/11 18:38:37 UTC
[GitHub] [beam] jrmccluskey opened a new pull request #15703: [BEAM-12960] Add extra context for structural DoFn ProcessElement error
jrmccluskey opened a new pull request #15703:
URL: https://github.com/apache/beam/pull/15703
Clarifies the error in a failure case where the ProcessElement method cannot be called from a structural DoFn.
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[GitHub] [beam] lostluck merged pull request #15703: [BEAM-12960] Add extra context for structural DoFn ProcessElement error
Posted by GitBox <gi...@apache.org>.
lostluck merged pull request #15703:
URL: https://github.com/apache/beam/pull/15703
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[GitHub] [beam] lostluck commented on a change in pull request #15703: [BEAM-12960] Add extra context for structural DoFn ProcessElement error
Posted by GitBox <gi...@apache.org>.
lostluck commented on a change in pull request #15703:
URL: https://github.com/apache/beam/pull/15703#discussion_r726503099
##########
File path: sdks/go/pkg/beam/core/graph/fn.go
##########
@@ -385,6 +385,12 @@ func AsDoFn(fn *Fn, numMainIn mainInputs) (*DoFn, error) {
if _, ok := fn.methods[processElementName]; !ok {
err := errors.Errorf("failed to find %v method", processElementName)
+ if fn.Recv != nil {
+ v := reflect.ValueOf(fn.Recv)
+ if v.Kind() != reflect.Ptr {
+ err = errors.Wrap(err, "structural DoFn passed by value, ensure that ProcessElement method is value receiving or have DoFn passed by pointer")
Review comment:
```suggestion
err = errors.Wrap(err, "structural DoFn passed by value, ensure that the ProcessElement method has a value receiver or pass the DoFn by pointer")
```
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[GitHub] [beam] jrmccluskey commented on pull request #15703: [BEAM-12960] Add extra context for structural DoFn ProcessElement error
Posted by GitBox <gi...@apache.org>.
jrmccluskey commented on pull request #15703:
URL: https://github.com/apache/beam/pull/15703#issuecomment-940359428
R: @lostluck
The exact wording of the error message could probably be better but this is the rough idea.
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[GitHub] [beam] jrmccluskey commented on pull request #15703: [BEAM-12960] Add extra context for structural DoFn ProcessElement error
Posted by GitBox <gi...@apache.org>.
jrmccluskey commented on pull request #15703:
URL: https://github.com/apache/beam/pull/15703#issuecomment-940364623
Added
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