Fixing mobile iOS crash which may be caused by 10MB+ attachment(s)

In the iOS app, I’m getting a crash in one notebook after importing (on my desktop) many Evernote notes that included about 20 attachments bigger than 10 MB. All the other notebooks work OK. Joplin itself, including webdav syncing, has been trouble free for me in over six months, across mobile, Windows, Mac and Linux machines.

To try and fix this, on my Mac copy of Joplin I identified all my >10MB attachments and deleted them from Joplin, deleting the whole entry. I found their sizes by listing the ~/.config/joplin-desktop/resources folder and previewing them to identify them in the Joplin app itself. In fact, deleting them in Joplin did not delete them in that folder, so I also manually deleted each of them in the system file browser.

On the next sync in iOS I could see a corresponding number of deletions, but it has not fixed the crashing problem.

The crashing happens a minute or two after opening the problem notebook in iOS Joplin. The note list is up to date but notes do not open and even if I do nothing after changing to that notebook, the app crashes after several minutes.

What should I do to fix this notebook in the iOS app?

Cleanup of the resources directory should happen after 24 hours. Although there's a bug where deleted resources are not removed from the directory.

It's hard to tell, because we don't have a crash log or anything to see why it is actually crashing.
Can you provide a Joplin debug log or maybe even the crashlog from the iPad?

Stupid idea, but what happens, if you create a new notebook and move all notes from the problem notebook to the new notebook and delete the problem notebook? Just a thought.

1 Like

Thank you for the suggestion. It took a while, but in one-year chunks (after sorting by creation date) I started transferring the old notes to a new notebook. When I got to 2067 notes transferred and 655 left behind in the original notebook, both notebooks started working on my iOS iPhone app (after updating sync).

I guess I will continue transferring notes until they are all in one notebook, because it is inconvenient to have two, even if they are distinguished by age.

Update: once new notebook reached 2262 notes (and old one 460), the new notebook started crashing on iOS.

Hmm, we still need a log file to understand what’s going on.

The crash log can be found in iPad’s Settings -> Privacy -> Analytics -> Analytics Data.
There should be an entry Joplin-YYYY-MM-DD-hhmmss.ips. The debug log might also help.

I don’t have any analytics crash logs there beginning with Joplin. There are a large number beginning ‘JetsamEvent’.

Ok, now I’m at a loss. @laurent what’s next? what can we do?

I recovered access to both old and new notebooks on iOS when I redistributed them to:
Old notebook: 861 entries
New notebook: 1861
and then synced both desktop and iOS devices.

Ok, but I think we should still figure out why it is crashing. Yes, having 2,600 notes in one notebook is rather uncommon (at least I think it is), but still, there’s no logical reason for the crash. Maybe a memory leak in react-native upstream, or a mem exhaustion bug in iOS. But maybe we screwed something up in the js code of Joplin.
Unfortunately without a stack trace it’s impossible to figure this out, unless I’m missing something here.

Thanks, if I can find a crash log I will happily offer it.

For context, it took 10 years to collect 2600 notes in this notebook (mainly in Evernote), which is less than one note per day. When I am researching something I can collect 20 notes in an hour or so. [Actually, I probably make even more web-capture notes in Joplin than I did in Evernote because I find them more readable–especially later in iOS–because I can tidy up formatting errors and extraneous content immediately at the time of capture.]

I spoke a bit too soon: the iOS app is still unstable although somewhat usable. After switching to either ‘new’ or ‘old’ notebooks, I need to give the app a minute or so before selecting an individual note to read. If I do not, there is at best a delay before the note displays (blank screen in content area of open note) or an immediate or eventual crash of the app.

I wasn't puzzled by the number of notes, but the number of notes in one notebook. e.g. I use notebooks to sort them into smaller units. I have yet to reach more than 100 notes within a notebook. But this is just a personal preference.

I really would like to figure out why that is. Very strange. Well, maybe @laurent has an idea how to investigate further.

1 Like

For a crash like this we need the low level log as described there http://joplinapp.org/debugging

@laurent apparently there’s no crash log created. oh and btw, the instructions on the web site are dated. They seem to be for an older iOS release and also some info is missing: The logs will be named in the format: empty

Joplin is mentioned in an iOS log generated by a JetsamEvent around the time of a Joplin ‘large-notebook crash’ incident. The crash was invoked by switching to the notebook with 1861 notes and immediately trying to open one of the notes in the list.

I don’t see a way to attach the log, so I will try pasting it here:

Log file
{"bug_type":"298","timestamp":"2019-08-13 11:55:51.30 +0100","os_version":"iPhone OS 12.3.1 (16F203)","incident_id":"E7A6B791-3990-44A2-9CD2-10F0653CDB64"}
{
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  "kernel" : "Darwin Kernel Version 18.6.0: Thu Apr 25 22:14:02 PDT 2019; root:xnu-4903.262.2~2\/RELEASE_ARM64_S8000",
  "product" : "iPhone8,2",
  "incident" : "E7A6B791-3990-44A2-9CD2-10F0653CDB64",
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]
}

Unfortunately this log does not tell us why it crashed. A stack trace is required, or some other information that coincides with the crash. e.g. sync resource X - crash. if it always crashed at resource X, we’d know that resource X was responsible.