File is being used by another process (COLI-1216)

[domonkosgabor]

I have some entries in the log files:

2023-09-27 13:23:12,833 [101] Piedone.Combinator.CombinedResourceManager - Default - Error when combining Style files [https://mysite/controller?somethingId=6865]
System.IO.IOException: The process cannot access the file 'D:\Sites\mysite\Media\Default_PiedoneModules\Combinator\Styles\662943427-1.css' because it is being used by another process.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileInfo.Delete()
at Piedone.Combinator.Services.CacheFileService.Save(String fingerprint, CombinatorResource resource, ICombinatorSettings settings)
at Piedone.Combinator.Services.CombinatorService.<>c__DisplayClass15_0.b__0(CombinatorResource combinedResource, List1 containedResources) at Piedone.Combinator.Services.CombinatorService.Combine(IList1 resources, String fingerprint, ResourceType resourceType, ICombinatorSettings settings, Boolean saveOnlySharedResources)
at Piedone.Combinator.Services.CombinatorService.CombineStylesheets(IList`1 resources, ICombinatorSettings settings)
at Piedone.Combinator.CombinedResourceManager.BuildRequiredResources(String stringResourceType)

As you can see it's a CSS file but the same applies to JS files too. I'm not sure what's the root cause of this issue and I haven't found any correlation with clearing the combinator cache so far. This needs further investigation but this log entry happens from time to time.

[Piedone]

Related? #15