Xapian discuss - Mar 2018 - bug: "no top level messages" crash on Zen email loops

On 2018-03-29 04:17:21, Olly Betts wrote:
> On Mon, Mar 19, 2018 at 05:03:21PM -0300, David Bremner wrote:
>> I can confirm this reproduces both the xapian-check and the
notmuch-show
>> error. Olly agrees that whatever notmuch is doing wrong, it
shouldn't
>> lead to a corrupted database
>
> There was a Xapian bug here, which I fixed on master last week and will
> be fixed in 1.4.6.
An honor. It's not every day you find a bug in a database software. ;)
> If changes to a new database which didn't modify the termlist table
were
> committed, then a disk block which had been allocated to be the root
> block in the termlist table was leaked (not used but not on the
> freelist of blocks the table can recycle).  This was largely harmless,
> except that it was detected by Database::check() and caused an error.
Hmm... but if I understand correctly, that's one part of the story: I
could get that error and not have the problem with `notmuch show`. Does
that *also* resolve the issue with email loops?

A.

-- 
Travail, du latin Tri Palium trois pieux, instrument de torture.

Antoine Beaupré <anarcat at orangeseeds.org> writes:
> Hmm... but if I understand correctly, that's one part of the story: I
> could get that error and not have the problem with `notmuch show`. Does
> that *also* resolve the issue with email loops?
I don't think so, no.

d

On Thu, Mar 29, 2018 at 08:50:22AM -0400, Antoine Beaupré
wrote:
> On 2018-03-29 04:17:21, Olly Betts wrote:
> > If changes to a new database which didn't modify the termlist
table were
> > committed, then a disk block which had been allocated to be the root
> > block in the termlist table was leaked (not used but not on the
> > freelist of blocks the table can recycle).  This was largely harmless,
> > except that it was detected by Database::check() and caused an error.
> 
> Hmm... but if I understand correctly, that's one part of the story: I
> could get that error and not have the problem with `notmuch show`. Does
> that *also* resolve the issue with email loops?
Yes, from what bremner said on IRC there's still a notmuch bug here.

My reply was really just in the context of Xapian to note what the bug
actually was and when the fix would appear (since bremner sent his
message to both the notmuch and Xapian lists).

Cheers,
    Olly