On Wed, Apr 6, 2016 at 9:27 PM, Timo Sirainen <tss@iki.fi> wrote:
The total request size is 31708 bytes and it contains many (hundreds?) of 'OR hdrs' (side note: I wonder which client action triggers these kind of requests, maybe the user selected hundreds of mails for search?)
I bet this is the weird iOS client stupidity where they for some weird reason started issuing commands like:
SEARCH OR HEADER Message-ID id1 OR HEADER Message-ID id2 OR HEADER Message-ID id3 ...
With the entire command about ~32 kB. It does it for every single message in the folder. Why not simply FETCH 1:* HEADER.FIELDS[Message-ID] and do the matching itself..
I _think_ this is a problem of the URL length / max http header size. (Debian Jessie) Tomcat7 very likely does not accept more than 32kb data in a request.
I wonder if Dovecot should limit SOLR requests to a specific size and deny long requests with an imap error (?)
Or just issue multiple Solr requests.. In any case, troublesome.. Could those limits be just increased in Tomcat?
I've set maxHttpHeaderSize="65536" ("Connector"-definition in /etc/tomcat7/server.xml) and at least during the last two days no error occured anymore :-)
Chris