Quoting Robert Stepanek <r...@fastmailteam.com>:
On Fri, May 10, 2019, at 2:18 PM, Michael Menge wrote:
no the problem is not completly resolved jet.
See for details.
I tested this right now on the 3.0 branch, and I can confirm there's
an issue of matches not being found. I don't have an answer why this
is so, yet. I'm working on it.
> I've put in my impad.conf:
> search_engine: squat
> search_fuzzy_always: 1
AFAIK the squat search engine does not support fuzzy search.
I am sure in my testing this setting didn't resolve the slow
search, but i don't remember if this setting did nothing,
or failed to find anything at all or what else happened
with this configuration.
If I recall correctly, Cyrus uses the configured search engine only
for fuzzy search. Non-fuzzy search is matched using the
Cyrus-builtin routines, which will be slow: for body search it has
to examine every message for that mailbox.
If your client is sending something like:
C: 6 search body "body"
then it won't use the squat/xapian index, unless you have
search_fuzzy_always set.
Thanks Robert for looking into it.
I think there is some confusion here. I didn't test "search body",
not sure if this was supported by cyrus 2.4 and if yes if it made
use of the index.
What I did test was "search text" and "search header".
Both used the index in 2.4 and didn't use it in 3.0
in my initial configuration.
I was able to make cyrus use the squat index file again
for header search by enabling conversation db, though I had to
disable conversation db again on our production servers because
of other problems.
I can test again if search_fuzzy_always has an influence on
the usage of the usage of the "search text".
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