Category view, product sorting in frontend

[gewaechshaus]

Hello,

after updating elasticsuite to 2.5.3 by composer and elasticsearch to 5.6.8 (from 2.x) the category lists product sorting in frontend doesn't work anymore. I think this could be related to the elasticsearch scripting module. However, the script flags mentioned in the 2.x wiki (https://github.com/Smile-SA/elasticsuite/wiki/ServerConfig-2.x)

script.inline: on
script.indexed: on

seems to be replaced in elasticsearch 5?

We did replace script.indexed as it throws out a java exception. Can somebody who is deeper into elastic demistify this?

Another thing we noticed in context, is an error in magentos system.log

main.INFO: Request Success: {"method":"GET","uri":"http://xx.xxx.xxx.xxx:920/live_default_catalog_product   /product/_search","headers":{...] 
main.CRITICAL: Unable to unserialize value. [] []

Possible related to

elasticsuite/src/module-elasticsuite-virtual-category/Plugin/Catalog/Category/SaveProductsPositions.php

Line 77 in e0d4e5e

$this->unserializeProductPositions($category);

[afoucret]

Hi @gewaechshaus,

The scripting configuration have change in ElasticSearch 5.x.
As it is not required anymore in the last version of ElasticSuite, you can safely remove these lines of configuration.

I suspect, your serialization problem is related to a low max_input_vars config value.
You should consider setting it too an higher value (> 5000).
It is a common error we have with Magento.

Please tell me if it solve your issue.

[gewaechshaus]

Hi @afoucret ,
many thanks for clarifying this.

I did enlarge the max_input_vars to 6000(from default 1000) and the max_input_nesting from 64 to 128. Still logging the unserialize error and got those sorting problems.

[afoucret]

Did you clean the cache and have you reindex everything after the update ?

[gewaechshaus]

For sure, I did a indexer:reindex, cache:clean, cache:flush. As it didn't had an effect, I also restarted all related services

[afoucret]

To be clear : are you talking about the manual product sorting ?

[gewaechshaus]

Yes, we did sort all categories manualy. This works in backend, but doesn't work in frontend.

[afoucret]

OK. Think I got it.

[gewaechshaus]

Flushed the redis-cli, no effect. Stumbled upon https://magento.stackexchange.com/questions/194010/magento-2-2-unable-to-unserialize-value

[afoucret]

PR #790 will fix this one.
Will be part of release 2.5.4.

Feel free to test it and give us a feedback.

BR

[gewaechshaus]

Does work! Fixed. Many many thanks!!

[gewaechshaus]

@afoucret - and btw, mad respect for the merchandiser, real awesome

[afoucret]

The 2.5.4 release is out and contains the patch