544806 - Offline IMAP folder not properly compacted

Status: RESOLVED WORKSFORME

(MailNews Core :: Backend, defect)

Description

[Michael Baffoni]

Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.1.7) Gecko/20100111 Thunderbird/3.0.1

I had an offline folder that was 700+ MB.  I compacted the folder online, I went offline, compacted again (actually got the message to compact all offline folders), folder was 700+ MB still.  I reindexed folder (which cleared offline files) and went offline with download, offline folder is less than 70MB.  Compacting is not removing all offline emails properly (ideally this should happen when online, but when offline, it should work as well).

To reproduce:
1) Start with stale offline folder (multiple new IMAP messages, sync, delete online, sync, new message, sync, delete online, sync, etc.).
2) Check offline folder size
3) Compact folder online.
4) Go offline, compact folder
5) Go online.  Check size.
6) Reindex, and sync for offline use
7) Check size.

Expected: size from 5) and 7) should be the same.
Actual: they are not.

Comment 1

[Wayne Mery (:wsmwk)]

Michael, do you still see this in v3.0.3?
is there a matching bug from http://bit.ly/aRnqVz ?

Comment 2

[WADA:World Anti-bad-Duping Agency]

Michael Baffoni, which is real total data size of the folder? 700MB? 70MB?
After "6) Reindex", was message of "<account_name> is up to date" displayed at Activity Manager window before "7) Check size"?

Comment 3

[Michael Baffoni]

If by "real" you mean the size of the IMAP folder on the server, it was 70MB.  "Check size" is just opening a window in the OS and looking at the file size of the offline file.

Comment 4

[WADA:World Anti-bad-Duping Agency]

(In reply to comment #3)
> If by "real" you mean the size of the IMAP folder on the server, it was 70MB. 

It looks that all mails were downloaded when you executed step 7) after rebuild-index at step 6).

"Compact" consists of;
  i)  Request "expunge" to IMAP server
  ii) Compaction of local offline-store
      (different but similar to Compact of local mail folder)
If Work Offline mode, i) can't be executed. Tb possibly doesn't invoke ii) if i) fails or is impossible. It may depends on IMAP delte model.
What is your IMAP delete model choice?

Comment 5

[Michael Baffoni]

Move to trash.

Comment 6

[Wayne Mery (:wsmwk)]

Michael, can you reproduce this in version 6, and do you have any more info?

Comment 7

[Wayne Mery (:wsmwk)]

(In reply to Wayne Mery (:wsmwk) from comment #6)
> Michael, can you reproduce this in version 6, and do you have any more info?

Comment 8

[Joshua Cranmer [:jcranmer]]

RESOLVED INCOMPLETE due to lack of response to previous question. If you feel this change has been made in error, please respond to this bug with your reason why.

Comment 9

[Michael Baffoni]

Reviewing, confirmed WFM on Mozilla/5.0 (Windows NT 6.1; WOW64; rv:11.0a2) Gecko/20120124 Thunderbird/11.0a2