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https://issues.apache.org/jira/browse/SOLR-16647?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kevin Risden updated SOLR-16647:
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Status: Patch Available (was: Open)
> Circuit breaker examples are wrong and don't match documentation
> ----------------------------------------------------------------
>
> Key: SOLR-16647
> URL: https://issues.apache.org/jira/browse/SOLR-16647
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Colvin Cowie
> Priority: Trivial
> Attachments: image-2023-02-04-12-08-26-407.png
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> I was diffing the solrconfig.xml in _default and sample_techproducts_configs
> and saw that they had different circuitBreaker config. The one in _default
> uses invalid tags according to
> [https://solr.apache.org/guide/solr/latest/deployment-guide/circuit-breakers.html#circuit-breaker-configurations]
> The default config attempts to enable circuit breakers, but I don't think
> they actually are enabled given the apparently invalid XML tags
> [https://github.com/apache/solr/blob/92b376a17482496a197ce9c20b5b757f9b354724/solr/server/solr/configsets/_default/conf/solrconfig.xml#L578]
>
> The sample techproducts config has them commented out, but uses the correct
> tags
> [https://github.com/apache/solr/blob/c96c78132d77974adaec62ffaaf4b819f76f49a9/solr/server/solr/configsets/sample_techproducts_configs/conf/solrconfig.xml#L600]
>
> !image-2023-02-04-12-08-26-407.png!
>
> Also the documentation says to configure the breakers like this:
> {code:java}
> <str name="memEnabled">true</str>
> <str name="memThreshold">75</str>
> <str name="cpuEnabled">true</str>
> <str name="cpuThreshold">75</str>{code}
> But the example configs use
> {code:java}
> <memoryCircuitBreakerThresholdPct>100</memoryCircuitBreakerThresholdPct>
> <cpuBreaker enabled="true" threshold="75"/>{code}
> Looks like documentation is correct and the examples are wrong:
> [https://github.com/apache/solr/blob/c99af207c761ec34812ef1cc3054eb2804b7448b/solr/core/src/java/org/apache/solr/util/circuitbreaker/CircuitBreakerManager.java#L160:L163]
>
>
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