https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=42878
Bug ID: 42878
Summary: Batch the available-item check in ES
marc_records_to_documents
Initiative type: ---
Sponsorship ---
status:
Product: Koha
Version: Main
Hardware: All
OS: All
Status: NEW
Severity: enhancement
Priority: P5 - low
Component: Searching - Elasticsearch
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
Target Milestone: ---
When building Elasticsearch documents, marc_records_to_documents runs one query
per record to set the 'available' flag:
SELECT COUNT(*) FROM items WHERE biblionumber=? AND onloan IS NULL AND
itemlost=0
(Koha/SearchEngine/Elasticsearch.pm, the "at least one available item" block).
marc_records_to_documents is normally given a whole batch of records, so this
is
N queries per batch. Availability for every biblionumber in the batch could be
fetched with a single grouped query instead.
This matters most on a networked database, where it is one extra round-trip per
record during reindex.
Test plan:
1. prove t/db_dependent/Koha/SearchEngine/Elasticsearch.t
2. Confirm the 'available' flag is unchanged for records with/without available
items.
3. Count DB statements during a batch reindex before/after.
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