[Koha-bugs] [Bug 35220] New: Merging patrons can cause lock timeouts

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=35220

            Bug ID: 35220
           Summary: Merging patrons can cause lock timeouts
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P5 - low
         Component: Patrons
          Assignee: koha-bugs at lists.koha-community.org
          Reporter: nick at bywatersolutions.com
        QA Contact: testopia at bugs.koha-community.org
                CC: gmcharlt at gmail.com, kyle.m.hall at gmail.com

The code to merge patrons uses a transaction to update all of the related
patron tables.

On systems with a long history (i.e. a big statistics table) this operation can
take 30 seconds or more, which begins to cause issues writing to the tables.

We need to find a way to speed this up, or to defer the merging of patrons.

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