Unexpected Behavior with File I/O and Async/Await in C# 10
I'm deploying to production and I'm updating my dependencies and I'm trying to figure out I've searched everywhere and can't find a clear answer. I'm experiencing an unexpected behavior when attempting to read from a file asynchronously using `File.ReadAllTextAsync()` in C# 10. My application frequently gets into a state where it seems to hang, especially when the file is large or when it's accessed multiple times in quick succession. Here’s the relevant code snippet: ```csharp public async Task<string> ReadFileAsync(string filePath) { try { string content = await File.ReadAllTextAsync(filePath); return content; } catch (IOException ioEx) { Console.WriteLine("I/O error occurred: " + ioEx.Message); return null; } catch (Exception ex) { Console.WriteLine("An error occurred: " + ex.Message); return null; } } ``` I call this method like this: ```csharp public async Task ProcessFilesAsync(List<string> filePaths) { foreach (var path in filePaths) { var content = await ReadFileAsync(path); // Process the content } } ``` The issue arises particularly when I run `ProcessFilesAsync` with a list of file paths that includes some large files. Sometimes, the application just hangs without throwing any exceptions, and I can't seem to figure out why this is happening. In my testing, I’ve also noticed intermittent `System.IO.FileNotFoundException` errors for files that do exist. I've tried using `ConfigureAwait(false)` to avoid deadlocks, but that hasn't helped. Additionally, I’ve ensured that no other process is accessing the files at the same time, and I’ve even attempted to add a `CancellationToken` to the read operation to see if I could gracefully handle long-running reads, yet the problem persists. Could this be related to how the async methods are being awaited or perhaps something with the file access? Any insights or recommendations would be greatly appreciated! For context: I'm using C# on macOS. Has anyone else encountered this? I'm developing on Debian with C#. Am I approaching this the right way? I'm working in a macOS environment. Is this even possible? I'd really appreciate any guidance on this. Thanks for any help you can provide!