137573 - User Input Blocked at Conclusion of Download

Status: VERIFIED DUPLICATE of bug 103766

(SeaMonkey :: Download & File Handling, defect)

Description

[Timothy Sipples]

The following problem is observed with Mozilla 0.99 build 2002031114 (the
milestone build) on OS/2 Warp:

1.  Download a large (multi-megabyte) file.
2.  When prompted, choose to save to a network drive on a remote file server,
preferably a slow server across a WAN or dial-up connection.
3.  Wait until the file transfer completes (to the temporary directory).
4.  Problem: When Mozilla moves the file from the temporary directory to the
network drive, desktop user input is blocked until the move is completed.

This can take a very long time to unblock when there's some combination of a
large file, slow server, and/or slow network connection to the file server. 
However, the problem seems to occur even with relatively fast WAN connections,
as we have on our internal network.  It's particularly likely to impact
WorkSpace On-Demand shops, since they are hugely dependent on network file servers.

Assigned to OS/2 queue only for now, since it's probably harder to block desktop
user input on other operating systems inadvertantly and, thus, while I haven't
tested it, I suspect the problem won't show up quite as dramatically on other
platforms.

Marked "major" because this problem effectively causes a system lockup.

Comment 1

[Mike Kaply [:mkaply]]

To download manager owner:

Where does the actual copy of the file happen?

Comment 2

[Boris Zbarsky [:bzbarsky]]

The copy happens in nsExternalAppHandler::ExecuteDesiredAction() (see the
MoveFile() call).  Unfortunately, it happens on the UI thread.

Duplicate of "Browser hangs after downloading a large file"

*** This bug has been marked as a duplicate of 103766 ***

Comment 3

[sairuh (rarely reading bugmail)]

marking verified as a duplicate.

if you decide to reopen this bug, please clarify why.

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