Magento 2.3.2 OS Elasticsearch 6.8 returning suggestions from MySQL search_query

[rf-magma]

Preconditions (*)

1. installing and configuring Elasticsearch 6.8.2 in a Magento 2.3.2(or 2.3-develop) Open Source installation as per devdocs (reindexing and cache:clean ok)
2. checking (with Kibana) that the query (GET _search) is sent to Elastic (activating slow log threshold to 0 and checking the queries get passed to Elastic)
3. entering word/s in Magento2 search bar and hitting enter generates logs in Elasticsearch and return expected results (same as firing the query "GET _search" in Kibana).

Steps to reproduce (*)

1. In magento 2.3 search bar entering a word (without hitting enter) and waiting for autocomplete to return results (search suggestions) in a dropdown list

Expected result (*)

1. Query sent to Elasticsearch in order to retrieve "search suggestions"
2. Query logged in Elasticsearch logs
3. Search suggestions retrieved from Elastic

Actual result (*)

1. Magento 2.3 queries instead MySQL search_query table and returns those search suggestions (words not present in whole elasticsearch indexes)
2. Queries not logged in elastic logs proving query is made to mysql search_query table

Notes

mysql search_query table contains many words not present in whole Magento because registers search made by previous visitors

thanks,
romeo

[m2-assistant]

Hi @rf-magma. Thank you for your report.
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@rf-magma do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

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[m2-assistant]

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[magento-engcom-team]

✅ Confirmed by @engcom-Charlie
Thank you for verifying the issue. Based on the provided information internal tickets MC-28940 were created

Issue Available: @engcom-Charlie, You will be automatically unassigned. Contributors/Maintainers can claim this issue to continue. To reclaim and continue work, reassign the ticket to yourself.

[usuyukiso]

For me was also reproduced with Magento 2.3.2 OS, 2.3.3 Commerce.