remko commented on issue #18995:
URL: https://github.com/apache/beam/issues/18995#issuecomment-3255391557

   The JIRA ticket says:
   ```
   This issue was marked "stale-P2" and has not received a public comment in 14 
days. It is now automatically moved to P3. If you are still affected by it, you 
can comment and move it back to P2.
   ```
   
   I am affected by this, so should this become a P2 again? I'm unable to use 
the datastore connector because almost all my kinds have embedded Keys in them, 
and I get a stack overflow when starting the pipeline.
   
   This is my program:
   ```
   package main
   
   import (
        "context"
        "reflect"
   
        "cloud.google.com/go/datastore"
        "github.com/apache/beam/sdks/v2/go/pkg/beam"
        "github.com/apache/beam/sdks/v2/go/pkg/beam/core/runtime"
        "github.com/apache/beam/sdks/v2/go/pkg/beam/io/datastoreio"
        "github.com/apache/beam/sdks/v2/go/pkg/beam/runners/prism"
   
        _ "github.com/apache/beam/sdks/v2/go/pkg/beam/io/filesystem/gcs"
        _ "github.com/apache/beam/sdks/v2/go/pkg/beam/io/filesystem/local"
   )
   
   type Foo struct {
        Bar *datastore.Key `datastore:"bar"`
   }
   
   var fooKey string
   
   func init() {
        fooKey = runtime.RegisterType(reflect.TypeOf((*Foo)(nil)).Elem())
   }
   
   func main() {
        beam.Init()
        p := beam.NewPipeline()
        s := p.Root()
        datastoreio.Read(s, "myproject", "Foo", 256, reflect.TypeOf(Foo{}), 
fooKey)
        prism.Execute(context.Background(), p)
   }
   ```
   
   I attached the output of the command.
   
   [stack.txt](https://github.com/user-attachments/files/22146666/stack.txt)


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