cpoerschke commented on pull request #288:
URL: https://github.com/apache/solr/pull/288#issuecomment-959652732


   > This also affected the Implicit Router as it will now broadcast the 
delete-by-id request if the route is missing, so I updated a failing test. I'd 
like some feedback on this, as maybe the old behavior is more desirable for the 
Implicit router.
   
   From the _"... does not automatically route ..."_ mention at 
https://solr.apache.org/guide/8_10/collection-management.html#create-parameters 
documentation I think the existing behaviour for the implicit router makes 
sense i.e. routing of both indexing and delete-by-id requests is the caller's 
responsibility.
   
   (If we wanted to change that behaviour, hypothetically, then doing so 
separately (e.g. as a follow-up issue and pull request) might be clearest and 
non-backwards compatibility would need to be considered and communicated e.g. 
users currently doing round-robins on delete-by-id external to Solr can cease 
doing that and users which use the implicit routing to (temporarily?) have the 
same document id on multiple shards would benefit from a way to opt-out of the 
delete-by-id broadcasting.)


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