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https://issues.apache.org/jira/browse/SOLR-5890?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14232906#comment-14232906
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Noble Paul commented on SOLR-5890:
----------------------------------

Implicit router can work 2 ways. 
# Docs reside in the node where it is sent to
# Or use a route as the actual name of the shard

Whenever it is not possible to identify the shard correctly (either using 
{{id}} or {{router.field}} ) the requests should be distributed across the 
cluster 


> Delete silently fails if not sent to shard where document was added
> -------------------------------------------------------------------
>
>                 Key: SOLR-5890
>                 URL: https://issues.apache.org/jira/browse/SOLR-5890
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrCloud
>    Affects Versions: 4.7
>         Environment: Debian 7.4.
>            Reporter: Peter Inglesby
>            Assignee: Noble Paul
>              Labels: difficulty-medium, impact-medium, workaround-exists
>             Fix For: 5.0, Trunk
>
>
> We have SolrCloud set up with two shards, each with a leader and a replica.  
> We use haproxy to distribute requests between the four nodes.
> Regardless of which node we send an add request to, following a commit, the 
> newly-added document is returned in a search, as expected.
> However, we can only delete a document if the delete request is sent to a 
> node in the shard where the document was added.  If we send the delete 
> request to a node in the other shard (and then send a commit) the document is 
> not deleted.  Such a delete request will get a 200 response, with the 
> following body:
>   {'responseHeader'=>{'status'=>0,'QTime'=>7}}
> Apart from the the very low QTime, this is indistinguishable from a 
> successful delete.



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