Shiny app can crash with a large file.

[leppott]

Describe the bug
Out of memory issue on ShinyApps.io with some large files.

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
Log file:

Additional context
Need to get limits from user on what size worked and what didn't.

[leppott]

There might be some clean up of the memory and saving of objects in memory I can do prior to generating the report.

OR, since the report isn't a super important part of the process I can just comment it out.

[leppott]

The file with the issues was 55 MB, 90,029 records, and 1,863 samples.

Not that big of a file so probably a memory management issue within the environment of the Shiny app. Ensure removing objects after no longer needed. Might need a garbage collection at some point in the code.

[leppott]

Proposed solution = add "gc()" after each large section of code to free up any left overs in memory.

[leppott]

Upped the app memory allocation on Shiny to the max. Feb 2 or so.