Using Aliases in Fusion & Solr

Issue:

How can I use aliases to switch between hot and cold collections? 

Environment:

Fusion

Resolution:

Use case:

Aliases are used for switching between hot and cold collections.

Alias in Solr:

Collection aliases are only available when using SolrCloud mode and are manipulated via a simple HTTP API:

• Create/Update
http://localhost:8983/solr/admin/collections?action=CREATEALIAS&name=AliasName&collection=ListOfCollections

• Delete
http://localhost:8983/solr/admin/collections?action=DELETEALIAS&name=AliasName

You can also use the Solr Admin UI to create an alias. Follow these steps:

1. Access the Solr Admin UI in your web browser.
2. Navigate to the "Collections" section.
3. Click on the "Aliases" tab.
4. Click the "Add Alias" button.
5. Provide the alias name and select the collection you want to associate with the alias.
6. Save the alias.

More Documentation:

https://cwiki.apache.org/confluence/display/solr/Collections+API#CollectionsAPI-api4

Create an alias in fusion

curl -u user:pass -X PUT -H 'Content-type: application/json' -d '{"solrParams":{"name":"MYSOLRCOLLECTION"}}' http://localhost:8764/api/apollo/collections/myFusionCollection

You need to tell the Fusion collection to point to another Solr collection 'MYSOLRCOLLECTION' with a PUT.
This is equivalent to using the Solr collection API to update the alias.

Cause:

N/A