Solr config drupal-6.4-solr-6.x doesn't match Solr 7.1.0

[kayakr]

https://github.com/Islandora-Devops/claw-playbook/blob/master/solr.yml references geerlingguy.solr that used to default to 7.1.0 but now defaults to 7.4.0 (see https://github.com/geerlingguy/ansible-role-solr/blob/master/defaults/main.yml). Either way, the solr config that gets copied across by drupal.yml is for solr 6.x (see https://github.com/Islandora-Devops/claw-playbook/blob/master/roles/internal/webserver-app/tasks/drupal.yml#L68).

Is there a particular reason for not using the drupal-6.5-solr-7.x solr config ?

[seth-shaw-unlv]

That specific line was added in November 2017 but the solr 7.x configs weren't made available by the module until June 2018 (8.x-2.0).

We now reference 8.x-2.0, so it should be a simple PR changing the "6" to a "7" to fix that.

[kayakr]

@seth-shaw-unlv Thanks. FWIW, the solr 7.x configs are working ok on my local instance with Search API Solr 8.x-2.6.

I had to change /var/solr/data/CLAW/conf/solrcore.properties to set solr.install.dir=/opt/solr/.

Contrary to https://www.drupal.org/project/search_api_solr/issues/3005186#comment-12807969 I had to change schema.xml _version_ to
<field name="_version_" type="plong" indexed="true" stored="true"/>

[Natkeeran]

@kayakr
Can you please provide some additional context about the following change (i.e why is this required).

<field name="_version_" type="plong" indexed="true" stored="true"/>

[kayakr]

@Natkeeran It was a while ago now, but when I tried to reload the Solr core with the 7.x config it reported a Java exception: Caused by: java.lang.IllegalStateException: unexpected docvalues type NONE for field '_version_' (expected=NUMERIC). Re-index with correct docvalues type."

[seth-shaw-unlv]

@kayakr and @Natkeeran, it doesn't look like loading the 7.x config at install needs the field change. My testing for Islandora-Devops/islandora-playbook/pull/107 didn't show any issues and the SOLR logs didn't show any errors.

Feel free to re-open the ticket if it pops up again.