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https://issues.apache.org/jira/browse/SOLR-8975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15510829#comment-15510829
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Jason Gerlowski commented on SOLR-8975:
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I've started work on this in earnest, after an embarassingly long delay. As a
change, it's reminiscent of SOLR-8097. The change is simple conceptually, but
involves many smaller changes to the tests, due to their use of SolrClients.
For instance, many tests choose a ResponseParser randomly, often changing the
type frequently (each iteration through a for-loop) for added randomness. In a
"immutable-SolrClient-world" this approach isn't possible anymore, are at least
it would require new clients to be created often. This is relatively cheap for
{{HttpSolrClient}}, but could prove to be prohibitive for {{CloudSolrClient}}
usage.
I plan on pushing up a sample patch once I work through the work related to
{{HttpSolrClient}}, so changes/suggestions can be discussed before I slog
through the rest of the SolrClients.
> SolrClient setters should be deprecated in favor of SolrClientBuilder methods
> -----------------------------------------------------------------------------
>
> Key: SOLR-8975
> URL: https://issues.apache.org/jira/browse/SOLR-8975
> Project: Solr
> Issue Type: Improvement
> Components: SolrJ
> Reporter: Jason Gerlowski
> Priority: Minor
>
> SOLR-8097 added a builder layer on top of each {{SolrClient}} implementation.
> Now that builders are in place for SolrClients, the setters used in each
> SolrClient can be deprecated, and their functionality moved over to the
> Builders. This change brings a few benefits:
> - unifies SolrClient configuration under the new Builders. It'll be nice to
> have all the knobs, and levers used to tweak SolrClients available in a
> single place (the Builders).
> - reduces SolrClient thread-safety concerns. Currently, clients are mutable.
> Using some SolrClient setters can result in erratic and "trappy" behavior
> when the clients are used across multiple threads.
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