[Koha-bugs] [Bug 29893] New: ElasticSearch Config UI deletes mappings

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=29893

            Bug ID: 29893
           Summary: ElasticSearch Config UI deletes mappings
 Change sponsored?: ---
           Product: Koha
           Version: 21.05
          Hardware: All
                OS: All
            Status: NEW
          Severity: critical
          Priority: P5 - low
         Component: Searching - Elasticsearch
          Assignee: koha-bugs at lists.koha-community.org
          Reporter: domm at plix.at

When using the Elasticsearch UI
/cgi-bin/koha/admin/searchengine/elasticsearch/mappings.pl to edit search
mappings one can quite easily delete a lot of mappings by mistake.

To reproduce:

* go to /cgi-bin/koha/admin/searchengine/elasticsearch/mappings.pl
* click on the "Authorities" Tab
* You should see ~ "67 entries"
* enter "Heading-Main" into the search field, you now see ~8 entries ("filtered
from 67 entries"
* Click "save" Button
* Go again to the "Autorities" Tab
* You now see ~ "8 entries"
* All the other entries have been deleted!

What obviously happens is that all entries that where filtered due to the
search are not submitted to the backend on save. The backend now interprets the
missing entries as entries that shall be deleted. And happily deleted them!

This totally breaks the search index (after the next index run, or when adding
single items), as (eg in the auth-index) "authtype" is no longer indexed.

I currently don't have a 21.11 or later version at hand, so maybe this has
already been fixed?

To fix this bug we would either have to un-hide the filtered entries before
submitting the form; change the backend to not deleted missing entries (which
means that the delete-action would have to be implemented a bit different);
something else?

I guess that the first fix is easier, and would also make sense with regard to
how that form works.


Greetings,
domm

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