Magento – Magento 2 EE elastic search module not enabled

You can get details about your Elasticsearch indices through a GET request (curl for example, or straight from your browser). Assuming your port is set to the default 9200, you can do this to get your indices:

http://localhost:9200/_cat/indices?v

Here you will see a list of indices that Magento 2 is using, in our case it is named "magento2_product_1_v2".

You can they do a search query on this index to test if your data is present (the pretty param just means the output should be displayed in a readable format instead of raw JSON):

http://localhost:9200/magento2_product_2_v2/_search?pretty=true&q=[QUERY]

To view your entire index you can use:

http://localhost:9200/magento2_product_2_v2/_search?pretty=true&q=*

More info here: https://www.elastic.co/guide/en/elasticsearch/reference/2.3/_exploring_your_cluster.html

Some issues are still with sorting when an elastic search is using as a catalog search engine. To resolve it, you can apply below patch specifically to Magento 2.3.2 and Elasticsearch 6+.

Go to the below file and add a plugin on the below class.

Magento\Elasticsearch\Model\ResourceModel\Fulltext\Collection\SearchResultApplier.php

Find apply() method and replace it with the below function. This is hotfix introduced by Magento recently by adding $this->collection->setPageSize(null); to the SearchResultApplier.php class.

    public function apply()
    {
        if (empty($this->searchResult->getItems())) {
            $this->collection->getSelect()->where('NULL');
            return;
        }
        $ids = [];
        foreach ($this->searchResult->getItems() as $item) {
            $ids[] = (int)$item->getId();
        }
        $this->collection->setPageSize(null);
        $this->collection->getSelect()->where('e.entity_id IN (?)', $ids);
        $orderList = join(',', $ids);
        $this->collection->getSelect()->reset(\Magento\Framework\DB\Select::ORDER);
        $this->collection->getSelect()->order("FIELD(e.entity_id,$orderList)");
    }