riteshghorse commented on a change in pull request #15657:
URL: https://github.com/apache/beam/pull/15657#discussion_r738457370
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File path: sdks/go/pkg/beam/core/metrics/metrics.go
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@@ -136,6 +136,10 @@ func SetPTransformID(ctx context.Context, id string)
context.Context {
// Checking for *beamCtx is an optimization, so we don't dig deeply
// for ids if not necessary.
if bctx, ok := ctx.(*beamCtx); ok {
+ if _, ok := bctx.store.stateRegistry[id]; !ok {
+ bctx.store.stateRegistry[id] =
[4]*ExecutionState{&ExecutionState{}, &ExecutionState{}, &ExecutionState{},
&ExecutionState{}}
Review comment:
`stateRegistry ` is of pointer value. If we do `[4]*ExecutionState{}` it
throws error as `assignment to nil map`.
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