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https://issues.apache.org/jira/browse/SOLR-9378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17725555#comment-17725555
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ASF subversion and git services commented on SOLR-9378:
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Commit f4c541a94b7a579eeacc3b4b7fc9dd5a9db346a0 in solr's branch
refs/heads/branch_9x from Chris M. Hostetter
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=f4c541a94b7 ]
SOLR-9378: Internal shard requests no longer include the wasteful shard.url
param.
[shard] transformer now defaults to returning only the shard id (based on
luceneMatchVersion), but can be configured to return the legacy list of
replicas.
(cherry picked from commit 7a55ce3852f0d58e02eb5f532b2a8c693d65ff4f)
> Avoid sending the shard.url parameter in shard requests
> -------------------------------------------------------
>
> Key: SOLR-9378
> URL: https://issues.apache.org/jira/browse/SOLR-9378
> Project: Solr
> Issue Type: Improvement
> Components: search, SolrCloud
> Reporter: Shalin Shekhar Mangar
> Assignee: Chris M. Hostetter
> Priority: Minor
> Attachments: SOLR-9378-1.patch, SOLR-9378-2.patch, SOLR-9378.patch
>
>
> The shard.url parameter contains a list of all replicas for a shard. One of
> those is chosen by the HttpShardHandler to execute the request. So, it is
> used only within the context of processing request on a distributor node as a
> special storage for a list of replicas urls between the prep and execution
> phase of HttpShardHandler. There is no real need to send this parameter down
> to the chosen shard.
> However, Hoss pointed out to me that removing this would break
> ShardAugmenterFactory so we need to figure out if/how we can do this.
> Personally, I don't think it is at all useful to write down *all* replicas
> with the document without telling which replica really served the query.
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