Open Bug 1572826 Opened 5 years ago Updated 9 days ago

No items appear in unifinder when calDAV network calendar is loading, till complete loading has occurred - no loading progress, looks like nothing is happening - lightning/calendar 70.x [regression]

Categories

(Calendar :: Calendar Frontend, defect)

defect

Tracking

(Not tracked)

UNCONFIRMED

People

(Reporter: richard.leger, Unassigned)

References

Details

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0

Steps to reproduce:

This bug is a follow up/regression bug from Bug 1502923 Comment 106.

As observed in Thunderbird 70.0a1 (2019-08-08) (32-bit) when a ~4000 items network CalDAV calendar is first syncing no items appear in unifinder till the end of loading (with All Events and selected column Title), unfinder remain totally blank so you cannot see any progression of the loading while in the calendar view tab... it looks like nothing is happening... few items appearing in calendar week view... then nothing... till the end where "bang" all items appear at once suddenly in unifinder view!

As reported separately in Bug 1572823 it may take about 3mn for loading to complete before anything would show up in the unifinder view!

Still seeing this?

Flags: needinfo?(richard.leger)

Actually, I don't see significant value to keeping this open - if the cause is bug 1572823

(In reply to Wayne Mery (:wsmwk) from comment #3)

Actually, I don't see significant value to keeping this open - if the cause is bug 1572823

The fact that unfinder and calendar views shows no progression when a calendar is loading (this bug) is separate from the fact that one calDAV may take 3mn to load completely...

This bug is still happening in TB 94.0b2 (64-bit).

Flags: needinfo?(richard.leger)
Depends on: 1642292

Is this also now suffiicently resolved?

Flags: needinfo?(richard.leger)
Severity: normal → S3
Severity: normal → S3

(In reply to Wayne Mery (:wsmwk) from comment #5)

Is this also now suffiicently resolved?

Bug may have been fixed somehow as it is non longer happening in 106 branch...

Flags: needinfo?(richard.leger)

I think the weird thing that 107.0b1 is going to do to people's calendars on first launch is going to freak out a lot of people. In my case, when 107.0b1 launched, I saw all my calendar items and then it wiped them all out of the Today Pane. It took a couple minutes before all events re-appeared again but whatever stuff it's doing in the background isn't apparent.

Hi Arthur,

(In reply to Arthur K. (he/him) from comment #7)

I think the weird thing that 107.0b1 is going to do to people's calendars on first launch is going to freak out a lot of people. In my case, when 107.0b1 launched, I saw all my calendar items and then it wiped them all out of the Today Pane. It took a couple minutes before all events re-appeared again but whatever stuff it's doing in the background isn't apparent.

Do your items re-appear after one or two minutes waiting?
Does it happens every time you start Thunderbird or only the first time after the upgrade?

I suspect it may be the calendar(s) Offline Support cache being re-build following the upgrade... in TB 106.0b5 (64-bit) if you disable/re-enable Offline Support you would see the same behaviour happening as I did during my recent profile performance testing of CalDAV with Offline Support disabled... it takes more than one minute to load one large calDAV calendar 5000+ items with a batch size of 100... all details in Bug 1543953 Comment 56. That does not exclude other issues introduced in 107.0b1... some of it may be UI/item parsing performance related... or else... I don't think the issue you describe is related to this bug report though as it was confirmed fixed in 106 but maybe issue re-appeared in 107 branch :-)

Regards,

(In reply to Richard Leger from comment #8)

Hi Arthur,

(In reply to Arthur K. (he/him) from comment #7)

I think the weird thing that 107.0b1 is going to do to people's calendars on first launch is going to freak out a lot of people. In my case, when 107.0b1 launched, I saw all my calendar items and then it wiped them all out of the Today Pane. It took a couple minutes before all events re-appeared again but whatever stuff it's doing in the background isn't apparent.

Do your items re-appear after one or two minutes waiting?
Does it happens every time you start Thunderbird or only the first time after the upgrade?

I suspect it may be the calendar(s) Offline Support cache being re-build following the upgrade... in TB 106.0b5 (64-bit) if you disable/re-enable Offline Support you would see the same behaviour happening as I did during my recent profile performance testing of CalDAV with Offline Support disabled... it takes more than one minute to load one large calDAV calendar 5000+ items with a batch size of 100... all details in Bug 1543953 Comment 56. That does not exclude other issues introduced in 107.0b1... some of it may be UI/item parsing performance related... or else... I don't think the issue you describe is related to this bug report though as it was confirmed fixed in 106 but maybe issue re-appeared in 107 branch :-)

Regards,

It only happened that once and after it seemed like it re-downloaded all my events again, all seems ok. But it seemed like some kind of back end cache file was deleted and it was allowed to be recreated. I forget in which bug I reported it in but after deleting some cache file---forgot if this was a .json or .sqlite--- that was related to the bug about events not showing up on my home PC but showing up on my work PC (and vice versa), everything "calendar" got fixed for good and I haven't had an issue since. It seems like that's what happened on first launch.

On my home PC, this wiped my calendar and then after 5 minutes a couple events from two different calendars came back and then it died. Silently. I think it's a different bug so I'll open a new one.

Filed bug 1795802 for the new but seemingly different issues.

(In reply to Arthur K. (he/him) from comment #7)

I think the weird thing that 107.0b1 is going to do to people's calendars on first launch is going to freak out a lot of people. In my case, when 107.0b1 launched, I saw all my calendar items and then it wiped them all out of the Today Pane. It took a couple minutes before all events re-appeared again but whatever stuff it's doing in the background isn't apparent.
Was this ever fixed? Or does it still do this to other people?

(In reply to Arthur K. (he/him) from comment #10)

On my home PC, this wiped my calendar and then after 5 minutes a couple events from two different calendars came back and then it died. Silently. I think it's a different bug so I'll open a new one.
Same question here.

Finally, which versions does this apply to, and does the bug title clearly reflect that?

(In reply to Worcester12345 from comment #12)

(In reply to Arthur K. (he/him) from comment #7)

I think the weird thing that 107.0b1 is going to do to people's calendars on first launch is going to freak out a lot of people. In my case, when 107.0b1 launched, I saw all my calendar items and then it wiped them all out of the Today Pane. It took a couple minutes before all events re-appeared again but whatever stuff it's doing in the background isn't apparent.
Was this ever fixed? Or does it still do this to other people?

(In reply to Arthur K. (he/him) from comment #10)

On my home PC, this wiped my calendar and then after 5 minutes a couple events from two different calendars came back and then it died. Silently. I think it's a different bug so I'll open a new one.
Same question here.

Finally, which versions does this apply to, and does the bug title clearly reflect that?

No recollection of this issue but after reading the info, I can say this hasn't happened in 115.x nor 128.x so probably got resolved some time between 107 and 115.x.

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