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https://issues.apache.org/jira/browse/BEAM-4401?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Cody Schroeder resolved BEAM-4401.
----------------------------------
Resolution: Fixed
Fix Version/s: 2.5.0
> beam.Create fails to encode valid elements
> ------------------------------------------
>
> Key: BEAM-4401
> URL: https://issues.apache.org/jira/browse/BEAM-4401
> Project: Beam
> Issue Type: Bug
> Components: sdk-go
> Reporter: Cody Schroeder
> Assignee: Cody Schroeder
> Priority: Major
> Fix For: 2.5.0
>
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> The following program will panic because part of the proto3 message cannot be
> JSON marshalled.
> {noformat}
> panic: failed to decode data: json: cannot unmarshal object into Go struct
> field Path_Node.Specialization of type
> internal_go_proto.isPath_Node_Specialization
> {noformat}
> {code:go}
> package main
> import (
> "context"
> "github.com/apache/beam/sdks/go/pkg/beam"
> "github.com/apache/beam/sdks/go/pkg/beam/x/beamx"
> "github.com/apache/beam/sdks/go/pkg/beam/x/debug"
> ipb "kythe.io/kythe/proto/internal_go_proto"
> srvpb "kythe.io/kythe/proto/serving_go_proto"
> )
> func main() {
> ctx := context.Background()
> beam.Init()
> p := beam.NewPipeline()
> s := p.Root()
> e := &ipb.Path_Node{
> // proto3 oneof fields cannot be JSON marshalled
> Specialization: &ipb.Path_Node_RawAnchor{&srvpb.RawAnchor{}},
> }
> els := beam.Create(s, e)
> debug.Print(s, els)
> if err := beamx.Run(ctx, p); err != nil {
> panic(err)
> }
> }
> {code}
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