[SOLR-15478] Schema Changes are Not Visible after Reuse of ConfigSet

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 8.8
• Component/s: configset-api
• Assignee: Unassigned
• Reporter: Steffen Moldenhauer
• Created: 15/Jun/21 12:15
• Updated: 23/Jun/21 13:49

Description

After restoring a backup that reuses a previously existing config set, changes in the schema are not visible in the schema API.

The changes will become visible only after a server restart.

Steps To Repeat

start solr server in cloud mode with SOLR_OPTS set to -Dsolr.disableConfigSetsCreateAuthChecks=true -Dsolr.allowPaths=/var/solr_backup

solr start -c

For preparation create a config set, collection and backup:

http://localhost:8983/solr/admin/configs?action=CREATE&name=testcollection&baseConfigSet=_default

http://localhost:8983/solr/admin/collections?action=CREATE&collection.configName=testcollection&name=testcollection&numShards=1

http://localhost:8983/solr/admin/collections?action=BACKUP&location=/var/solr_backup&name=testcollection_backup&collection=testcollection

 

Check the list of fields with the schema API:

http://localhost:8983/solr/testcollection/schema/fields

Note the fields listed.

 

Simulate a schema change - add a field "test1"to the managed-schema:

/var/solr_backup/testcollection_backup/zk_backup/configs/testcollection/managed-schema

    <field name="test1" type="string" indexed="true" stored="true" />

 

Delete the collection and config set and restore it from the backup:

http://localhost:8983/solr/admin/collections?action=DELETE&name=testcollection

http://localhost:8983/solr/admin/configs?action=DELETE&name=testcollection

http://localhost:8983/solr/admin/collections?action=RESTORE&location=/var/solr_backup&name=testcollection_backup&collection=testcollection

 

Check the list of fields with the schema API again:

http://localhost:8983/solr/testcollection/schema/fields

The added test1 field is missing.

 

The field is immediately visible in 8.6.3 In 8.8.2 a server restart is necessary to see the new field.