[Koha-bugs] [Bug 24027] New: Adding multiple items is slow

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=24027

            Bug ID: 24027
           Summary: Adding multiple items is slow
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: NEW
          Severity: minor
          Priority: P5 - low
         Component: Cataloging
          Assignee: koha-bugs at lists.koha-community.org
          Reporter: nugged at gmail.com
        QA Contact: testopia at bugs.koha-community.org
                CC: m.de.rooy at rijksmuseum.nl

In cataloguing/additem.pl?biblionumber=XXX when we choose "add multiple copies
of the item" it's adds very slowly. I did analysis and there's one big
inefficiency of calling 

    ModZebra( $item->{biblionumber}, "specialUpdate", "biblioserver" );

in every AddItem call: it requests update for same biblionumber after adding
each new item and time for execution of this ModZebra grows exponentially.

My set of patches (preparatory + fix) I will provide here will make this call
to ModZebra happen once in the end of adding of the whole number of these items
once.

Also I will attach a few smaller follow-up patches where I propose
optimisations for extra operations.

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