Zackriya-Solutions/meetily · warning · anyhow::Error

Download already in progress for model: {}

Error message

Download already in progress for model: {}

What it means

Returned by download_model_detailed when model_name is already in the active_downloads set. The engine uses that set as a mutex-like guard (checked read-then-inserted write) so a second concurrent download for the same model is rejected instead of double-writing the same files.

Source

Thrown at frontend/src-tauri/src/parakeet_engine/parakeet_engine.rs:555

                Box::new(move |p: DownloadProgress| cb(p.percent)) as Box<dyn Fn(DownloadProgress) + Send>
            });
        self.download_model_detailed(model_name, detailed_callback).await
    }

    /// Download a Parakeet model with detailed progress (MB/speed/resume support)
    pub async fn download_model_detailed(
        &self,
        model_name: &str,
        progress_callback: Option<Box<dyn Fn(DownloadProgress) + Send>>,
    ) -> Result<()> {
        log::info!("Starting download for Parakeet model: {}", model_name);

        // Check if download is already in progress for this model
        {
            let active = self.active_downloads.read().await;
            if active.contains(model_name) {
                log::warn!("Download already in progress for Parakeet model: {}", model_name);
                return Err(anyhow!("Download already in progress for model: {}", model_name));
            }
        }

        // Add to active downloads
        {
            let mut active = self.active_downloads.write().await;
            active.insert(model_name.to_string());
        }

        // Clear any previous cancellation flag for this model
        {
            let mut cancel_flag = self.cancel_download_flag.write().await;
            *cancel_flag = None;
        }

        // Get model info
        let model_info = {
            let models = self.available_models.read().await;

View on GitHub (pinned to 0281737d87)

Solutions

1. Treat this error as benign in the UI: the first download is still running - attach to its progress events instead of surfacing an error
2. Disable the download button while a model is in Downloading status (poll parakeet_get_available_models or track the invoke promise)
3. Ensure single invocation from React (guard effects with a ref, avoid StrictMode double-calls reaching the command)

Example fix

// before
await invoke('parakeet_download_model', { modelName });

// after - ignore the 'already in progress' guard error
try {
  await invoke('parakeet_download_model', { modelName });
} catch (e) {
  if (!String(e).includes('already in progress')) throw e;
  // first download still running - just resume listening to progress events
}

// Check for a running download before invoking another
let downloading = engine.discover_models().await?
    .into_iter()
    .any(|m| m.name == name && matches!(m.status, ModelStatus::Downloading { .. }));
if downloading {
    // attach to progress events instead of starting a second download
}

// TS: { Downloading: { progress: n } } vs 'Available'/'Missing'
function isDownloading(status: unknown): boolean {
  return typeof status === 'object' && status !== null && 'Downloading' in status;
}

try {
  await invoke('parakeet_download_model', { modelName });
} catch (e) {
  if (String(e).includes('already in progress')) {
    // not an error: the original download is still running - just show its progress
  } else {
    throw e;
  }
}

When it happens

Trigger: Invoking parakeet_download_model twice for the same model (double-click on the download button, React StrictMode double effect, or two components triggering the same command); a retry fired while the original attempt is still streaming the ~652 MB encoder file.

Common situations: No button disabling during download; frontend event listeners re-invoking on progress events; user impatient on a slow link clicking download repeatedly.

Related errors

• Parakeet model {} is not downloaded
• Parakeet model {} is currently downloading
• Download already in progress for model: {}
• Parakeet engine not initialized
• Parakeet engine not initialized

AI-assisted analysis of Zackriya-Solutions/meetily@0281737d87 (2026-08-16). Data as JSON: /api/errors/c51e33e3b5f824cc. Report an issue: GitHub.