Elasticsearch6 generation does not exist

[wclshashank]

Preconditions (*)

1. Getting issue while upgrade magento 2.3 to Magento 2.3.1
2. Using Php 7.1.27 version on ubuntu OS

Steps to reproduce (*)

1. After upgrade magento version getting issue on di:compile like

Source class "\Magento\Elasticsearch6\Model\Adapter\FieldMapper\ProductField" for "Magento\Elasticsearch6\Model\Adapter\FieldMapper\ProductFieldMapper" generation does not exist.

2. I have checked class manually, it doesn't exist.

Expected result (*)

1. Issue doesn't appear di compile need to work properly.

Actual result (*)

1. 
2. Please help us to resolve this issue.

[magento-engcom-team]

Hi @wclshashank. Thank you for your report.
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@magento-engcom-team give me 2.3-develop instance - upcoming 2.3.x release

For more details, please, review the Magento Contributor Assistant documentation.

@wclshashank do you confirm that you was able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

[magento-engcom-team]

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Hi @wclshashank the 2.3.1 release will be 26 how can you upgrade ?

[wclshashank]

HI @engcom-backlog-nazar ,

Ok got it, I didn't check the release date and try to upgrade magneto2 version.

Thanks.

@wclshashank i'm closing this as magento 2.3.0 do not have Elasticsearch 6 module only develop branch. and on 2.3-develop have no this issue.

[juharintanen]

Updated to 2.3.1 now and same error still appears.
Only way around it was to disable Magento_Elasticsearch6 module

That file indeed did not exist

hi @juharintanen i'm will recheck.

[wclshashank]

Hi,

I have this issue due to Amasty module. Amasty module using elasticsearch, which is making issue in compiling.
So i have disable module bin/magento module:disable Amasty_Shopby Amasty_ShopbyPage Amasty_ShopbyBrand
and starts working.

Need to update Amasty module.

Thanks

[juharintanen]

Hi,

I have this issue due to Amasty module. Amasty module using elasticsearch, which is making issue in compiling.
So i have disable module bin/magento module:disable Amasty_Shopby Amasty_ShopbyPage Amasty_ShopbyBrand
and starts working.

Need to update Amasty module.

Thanks

Yep confirmed!
It wasn't that but another Amasty module. Error msg just didn't hint that way at all but good to know.

@wclshashank found internal ticket where this was fixed, wait a little bit i'm share with pr.

[fabio-fafle]

Hi,
from my understanding if you have a plugin on Magento\Elasticsearch\Elasticsearch5\Model\Adapter\FieldMapper\ProductFieldMapper the virtual type Magento\Elasticsearch6\Model\Adapter\FieldMapper\ProductFieldMapper will inherit it and this cause the issue on method
Magento\Setup\Module\Di\Code\Generator\InterceptionConfigurationBuilder::filterNullInheritance
if ($plugins === null || !$this->typeReader->isConcrete($instance)).

It looks like a bug to me.