[Koha-bugs] [Bug 15399] MARCXML records larger than 1 MB (1048576 bytes) are not searchable.

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=15399

--- Comment #7 from Barton Chittenden <barton at bywatersolutions.com> ---
(In reply to Fridolin SOMERS from comment #6)
> Yep I noticed this bug.
> 
> There seem to by a limit of YAZ.
> See yaz-client man, option -k.
> But I did not find how to use it in ZOOM perl lib.
> 
> In fact many bibs still use iso2709 for export/import. So its best to have
> records with size < 100 Ko.

Using GRS-1 is fully deprecated in Koha, which is the last place that I think
that the 100 Kb limit touches zebra. Koha's item data, stored in 952, can
*easily* go over 100 Kb, so this is not a realistic limit, and libraries with
long running serials cataloged as items can go over 1MB.

Looking at http://www.indexdata.com/yaz/doc/zoom.html, it seems that the
default values of maximumRecordSize and preferredMessageSize are both set to
1MB, and

    void ZOOM_connection_option_setl(ZOOM_connection c,
                                     const char *key,
                                     const char *val, int len);

and

    const char *ZOOM_connection_option_getl(ZOOM_connection c,
                                            const char *key,
                                            int *lenp);

take length options.

connection_option_setl() is called at line 470 of
/usr/lib/x86_64-linux-gnu/perl5/5.20/ZOOM.pm, but I'm not sure if Koha's
execution path ever calls option_binary(), which is the subroutine where
connection_option_setl() is called, nor am I sure that this will actually
override the default value of 1MB.

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