Unable to download large number of files in a ZIP folder in shiny

[Krishna Chaitanya Bandi]

Hi,

In the shiny app I have built, on clicking the download button it generates around 10,000 files each of around 2MB of size and I've written the code to zip all of the files together. But the zip fails to do so for such large number of files (or in essence a limit of file sizes to zip). I'm running this on a windows 7 machine.

Any inputs or insights would be appreciated.

Thanks

Krishna Chaitanya

[Joe Cheng]

My understanding is that the .zip format is normally limited to 4GB (in terms of maximum archive size). I'm also not sure whether the browser will wait for long enough while you compress 20GB worth of files, my guess is that it will time out. Perhaps perform the zipping using an actionButton/observeEvent, and only on successful zipping, show the download button? (But you'd still need to find a way to create such a large archive.)

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