** Changed in: mahara
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1508300
Title:
Embedded PDFs aren't always displayed
Status in Mahara:
Fix Committed
Bug description:
Noticed in Mahara 1.10; testing on 15.04 and 15.10 needed:
When a page contains many embedded PDFs, the following can happen (all at
once):
- some PDFs are displayed
- others show an error message
- others show a Mahara login box
- you can be logged out completely
An initial investigation couldn't replicate the issue successfully and
it seemed to happen intermittently. From what we gathered, it seems to
be a rendering / loading / overloading issue: Too many instances of
pdf.js try to be loaded at the same time causing timeouts and other
weird behavior.
I see two possibilities:
1. Limit the number of PDFs that can be embedded on a page
2. Load PDF blocks progressively one after the other
I don't know if the second option would mitigate the problem or not.
The first one could be limiting user's creativity, but would prevent
endless waiting for a page to load with the content.
Further insight is needed before a final decision can be made on how
to continue from here.
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