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https://issues.apache.org/jira/browse/SOLR-11982?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16393271#comment-16393271
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Tomás Fernández Löbbe commented on SOLR-11982:
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I think it should be a single parameter that can address the different types of
preference, not different parameters one for each type. In general I like the
syntax discussed here so far (I have that concern of the pipe I mentioned
before). I also feel it falls into the "shards" family of parameters.
{{shards}} determines the replicas to which the distributed query should be
sent, {{shards.info}} tells users which replicas responded a distributed query,
etc. as I said before, I think it is close to what's discussed in SOLR-10880
and naming should be consistent. I'm ok with changing the word "sort" if you
think that can confuse users. Do you think something like {{shards.preference}}
would be better [~elyograg]?
{quote} I don't think it needs to since the client, whatever it is, has full
control over where to send the query.
{quote}
Unless they are using CloudSolrClient... but yes, in that case users can choose
not to use it. In any case, I think that can be left to another Jira. We should
include a big note in the docs though.
> Add support for indicating preferred replica types for queries
> --------------------------------------------------------------
>
> Key: SOLR-11982
> URL: https://issues.apache.org/jira/browse/SOLR-11982
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Affects Versions: 7.3, master (8.0)
> Reporter: Ere Maijala
> Priority: Minor
> Labels: patch-available, patch-with-test
> Attachments: SOLR-11982-preferReplicaTypes.patch, SOLR-11982.patch,
> SOLR-11982.patch, SOLR-11982.patch, SOLR-11982.patch
>
>
> It would be nice to have the possibility to easily sort the shards in the
> preferred order e.g. by replica type. The attached patch adds support for
> {{shards.sort}} parameter that allows one to sort e.g. PULL and TLOG replicas
> first with \{{shards.sort=replicaType:PULL|TLOG }}(which would mean that NRT
> replicas wouldn't be hit with queries unless they're the only ones available)
> and/or to sort by replica location (like preferLocalShards=true but more
> versatile).
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