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Fatal error on GetFeatureFlag: concurrent map writes #80

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albertteoh opened this issue Dec 16, 2024 · 0 comments · May be fixed by #81

albertteoh commented Dec 16, 2024

Our application crashed with the following error:

fatal error: concurrent map writes

goroutine 7975 [running]:
github.com/posthog/posthog-go.(*SizeLimitedMap).add(...)
	/src/vendor/github.com/posthog/posthog-go/util.go:26
github.com/posthog/posthog-go.(*client).GetFeatureFlag(0xc000b7a100, {{0x1e0b64c, 0x2d}, {0x1dbe3a5, 0xc}, 0xc0017f8780, 0xc0017f87b0, 0xc0017f87e0, 0x0, 0xc0005abfb0})

It appears there was a concurrent write on the sizeLimitedMap.ids map.

Go's maps do not support safe concurrent writes.

The text was updated successfully, but these errors were encountered:

albertteoh linked a pull request

that will close this issue

Wrap map mutations with mutex lock #81

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