shunping commented on issue #33815:
URL: https://github.com/apache/beam/issues/33815#issuecomment-2816467324
Going back to the go pipeline, I see the following related goroutine
stacktrace from debugz
```
1 @ 0x102883ea8 0x102fbf89c 0x102fbf7e9 0x102fba364 0x102fb43c8 0x1028e8d24
# 0x102fbf89b
github.com/apache/beam/sdks/v2/go/pkg/beam/runners/prism/internal/engine.(*stageState).minPendingTimestampLocked+0x1ab
./Projects/beam-dev-go-prism/sdks/go/pkg/beam/runners/prism/internal/engine/elementmanager.go:1928
# 0x102fbf7e8
github.com/apache/beam/sdks/v2/go/pkg/beam/runners/prism/internal/engine.(*stageState).updateWatermarks+0xf8
./Projects/beam-dev-go-prism/sdks/go/pkg/beam/runners/prism/internal/engine/elementmanager.go:1948
# 0x102fba363
github.com/apache/beam/sdks/v2/go/pkg/beam/runners/prism/internal/engine.(*ElementManager).refreshWatermarks+0x133
./Projects/beam-dev-go-prism/sdks/go/pkg/beam/runners/prism/internal/engine/elementmanager.go:1073
# 0x102fb43c7
github.com/apache/beam/sdks/v2/go/pkg/beam/runners/prism/internal/engine.(*ElementManager).Bundles.func2+0x147
./Projects/beam-dev-go-prism/sdks/go/pkg/beam/runners/prism/internal/engine/elementmanager.go:407
1 @ 0x1028e0d08 0x1028c1094 0x10308ed70 0x10308d984 0x1028e8d24
# 0x10308ed6f
github.com/apache/beam/sdks/v2/go/pkg/beam/runners/prism/internal.executePipeline+0xf9f
./Projects/beam-dev-go-prism/sdks/go/pkg/beam/runners/prism/internal/execute.go:341
# 0x10308d983
github.com/apache/beam/sdks/v2/go/pkg/beam/runners/prism/internal.RunPipeline+0x393
./Projects/beam-dev-go-prism/sdks/go/pkg/beam/runners/prism/internal/execute.go:84
1 @ 0x1028e0d08 0x1028c1f04 0x1028c1ee5 0x1028e2288 0x1028f1ed0 0x1028f296c
0x1028f2919 0x102fba09c 0x102fb85fc 0x10309c978 0x103090950 0x103088404
0x1028e8d24
# 0x1028e2287 internal/sync.runtime_SemacquireMutex+0x27
./go/pkg/mod/golang.org/toolchain@v0.0.1-go1.24.1.darwin-arm64/src/runtime/sema.go:95
# 0x1028f1ecf internal/sync.(*Mutex).lockSlow+0x16f
./go/pkg/mod/golang.org/toolchain@v0.0.1-go1.24.1.darwin-arm64/src/internal/sync/mutex.go:149
# 0x1028f296b internal/sync.(*Mutex).Lock+0x6b
./go/pkg/mod/golang.org/toolchain@v0.0.1-go1.24.1.darwin-arm64/src/internal/sync/mutex.go:70
# 0x1028f2918 sync.(*Mutex).Lock+0x18
./go/pkg/mod/golang.org/toolchain@v0.0.1-go1.24.1.darwin-arm64/src/sync/mutex.go:46
# 0x102fba09b
github.com/apache/beam/sdks/v2/go/pkg/beam/runners/prism/internal/engine.(*ElementManager).markChangedAndClearBundle+0x4b
./Projects/beam-dev-go-prism/sdks/go/pkg/beam/runners/prism/internal/engine/elementmanager.go:1048
# 0x102fb85fb
github.com/apache/beam/sdks/v2/go/pkg/beam/runners/prism/internal/engine.(*ElementManager).PersistBundle+0xb2b
./Projects/beam-dev-go-prism/sdks/go/pkg/beam/runners/prism/internal/engine/elementmanager.go:933
# 0x10309c977
github.com/apache/beam/sdks/v2/go/pkg/beam/runners/prism/internal.(*stage).Execute+0x1a87
./Projects/beam-dev-go-prism/sdks/go/pkg/beam/runners/prism/internal/stage.go:333
# 0x10309094f
github.com/apache/beam/sdks/v2/go/pkg/beam/runners/prism/internal.executePipeline.func4+0xbf
./Projects/beam-dev-go-prism/sdks/go/pkg/beam/runners/prism/internal/execute.go:355
# 0x103088403 golang.org/x/sync/errgroup.(*Group).Go.func1+0x53
./go/pkg/mod/golang.org/x/sync@v0.13.0/errgroup/errgroup.go:79
1 @ 0x1028e0d08 0x1028c1f04 0x1028c1ee5 0x1028e23ac 0x1028f4460 0x102fb4ea4
0x1028e8d24
# 0x1028e23ab sync.runtime_SemacquireWaitGroup+0x2b
./go/pkg/mod/golang.org/toolchain@v0.0.1-go1.24.1.darwin-arm64/src/runtime/sema.go:110
# 0x1028f445f sync.(*WaitGroup).Wait+0x6f
./go/pkg/mod/golang.org/toolchain@v0.0.1-go1.24.1.darwin-arm64/src/sync/waitgroup.go:118
# 0x102fb4ea3
github.com/apache/beam/sdks/v2/go/pkg/beam/runners/prism/internal/engine.(*ElementManager).Bundles.func1+0x33
./Projects/beam-dev-go-prism/sdks/go/pkg/beam/runners/prism/internal/engine/elementmanager.go:350
```
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