Issue using ClearDependencyCacheAsync

So I'm working on an Android app where user can pre-download a level, then clear it from cache anytime he wants (to save disk space), then download it again. The problem is when trying to download the level again after having cleared it and without restarting the app: DownloadDependenciesAsync completes instantly and LoadSceneAsync is then unable to load the scene.

Flow goes as followed:

1. Addressables.GetDownloadSizeAsync(sceneKey) => handle.Result return the expected bytes value (> 0)
2. Addressables.DownloadDependenciesAsync(sceneKey) => takes some time to download, completes just fine, device storage decreases as expected
3. Addressables.LoadSceneAsync(sceneKey) => Works just fine.

Later on...

1. Addressables.ClearDependencyCacheAsync(sceneKey) => Completes just fine and device storage increases as expected
2. Addressables.GetDownloadSizeAsync(sceneKey) => handle.Result returns the expected bytes value on Android (though note that on Windows/Editor using Use Existing Builds it does not, it returns 0)
3. Addressables.DownloadDependenciesAsync(sceneKey) => completes instantly, which is not expected, and device storage does NOT decrease.
4. Addressables.LoadSceneAsync(sceneKey) => Unable to open archive file: /storage/emulated/0/Android/data/com.company.app/files/UnityCache/Shared/8ecd1ec47a1fed29f84ee74cfb5d5a5a/8fe28bc38aa00eb9de936545507572b0/__data
   Failed to load 'archive:/CAB-7317b2578dc9ae87229d00e0668ac411/CAB-7317b2578dc9ae87229d00e0668ac411.sharedAssets'. File may be corrupted or was serialized with a newer version of Unity.

You can find the logcat stack trace here here.

Any help, feedback or workaround would be much appreciated!

Edit: Reproduced on Addressables 1.16.19 and 1.18.9

 

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@davidla_unity Thanks for your feedback.

Though I figured what I was doing wrong while working on a new bug report project for you. I noticed something I didn't realize before: ClearDependencyCacheAsync(key, false) was producing an "AssetBundle 'xxx' with hash 'yyy' is still in use" warning and handle.Status was returning Failed.

After double checking my handles were properly being released, I later understood the issue was elsewhere: to get a precise download progress, I use
DownloadDependenciesAsync(key).GetDownloadStatus().Percent in Update, but I wasn't releasing that handle. Doing so fixed the issue. ClearDependencyCacheAsync now succeed as expected.

Though, I still find it odd the device storage was increasing and subsequent LoadSceneAsync crashing despite ClearDependencyCacheAsync having failed. This might be something you'll want to investigate (fyi, scene size was large, about 600MB).

Thanks again!

 

@FlorianBernard Thank you so much!