Elasticsearch Limit of total fields [9165] in index [product_1_v2] has been exceeded

Question

We face the following issue on our Magento 2.4 store with Elasticsearch 7 and more than 7000 attributes:

Catalog Search indexer process unknown error:
{"error":{"root_cause":[{"type":"illegal_argument_exception","reason":"Limit of total fields [9165] in index [product_1_v2] has been exceeded"}],"type":"illegal_argument_exception","reason":"Limit of total fields [9165] in index [product_1_v2] has been exceeded"},"status":400}

How can we solve this or limit the total fields of index product_1_v2? Or does anyone know what create these fields in index [product_1_v2], so that we can check if we can reduce them.

I guess it is caused by a specific product or attribute. Is there a way to create some sort of logging, to log the specific product or attribute that is creating this error?

See also: https://github.com/magento/magento2/issues/28454

Is there a way to create a script or log, that shows all products that exceed these total files of 9169?

EDIT:

Seems that Magento has created a patch for the Cloud and Commerce version; https://support.magento.com/hc/en-us/articles/360050423891-MDVA-30284-Magento-Patch-Elasticsearch-7-Limit-of-total-fields-XXXXX-in-index-has-been-exceeded

That solved the issue.

Answer 1

Seems that Magento has created a patch for the Cloud and Commerce version; https://support.magento.com/hc/en-us/articles/360050423891-MDVA-30284-Magento-Patch-Elasticsearch-7-Limit-of-total-fields-XXXXX-in-index-has-been-exceeded

That solved the issue.

Answer 2

Elasticsearch variable - index.mapping.total_fields.limit

The maximum number of fields in an index. Field and object mappings, as well as field aliases count towards this limit. The default value is 1000.

Here the link of another discussion for setting the limit and test on your own: https://stackoverflow.com/questions/55372330/what-does-limit-of-total-fields-1000-in-index-has-been-exceeded-means-in Please check the elastic configuration because this kind of problems are always given by the configuration that was made with little awareness.

Cheers