I'll put in that test.
However it's not clear that's the problem;
high DB load would not cause host lookup by ID to fail.
-- David

Josef W. Segur wrote:
> Every once in awhile, a user will note in the s...@h Number Crunching forum
> that work being processed on a host has been marked "Client detached" in
> the task lists. It happens often enough to be a familiar complaint,
> seemingly most often when the BOINC database is most heavily loaded. As
> a pure guess, finding a host by it's hostid might fail under those
> circumstances.
> 
> Looking through the authenticate_user() code in handle_request.cpp, the
> logic when hostid is either missing or invalid but the host is found
> based on host_cpid assumes that's sufficient to assume the host has
> detached and reattached. I suggest adding a test for
> (g_request->other_results.size() == 0). It should be unconditionally true
> for an actual detach/reattach, otherwise if it's true it does no harm to
> mark any results "Client detached" because the host didn't know of them.
> 
> The same test could also be used when both hostid and host_cpid have failed
> to locate the host, but find_host_by_other() finds a close match. I don't
> know whether that's a good idea, that matching seems adequate but having
> failed the "id" methods seems to imply a sufficiently bad situation that a
> fresh start may be needed. Judgement call, I guess.

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