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https://issues.apache.org/jira/browse/SOLR-17343?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SOLR-17343:
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Labels: pull-request-available (was: )
> Live-updating Global Circuit Breakers via ClusterProperties
> -----------------------------------------------------------
>
> Key: SOLR-17343
> URL: https://issues.apache.org/jira/browse/SOLR-17343
> Project: Solr
> Issue Type: New Feature
> Affects Versions: 9.6.1
> Reporter: Nick Ginther
> Priority: Minor
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Global rate limiting was added via environment variables and system
> properties in SOLR-16974. This was implemented via environment variables that
> are evaluated at Solr startup. The implementation results in global circuit
> breakers that are static until the Solr process restarts. It would be useful
> to be able to dynamically update circuit breakers while Solr is running for
> two reasons.
> # Cluster load may change in such a way that it is useful to raise or lower
> circuit breaker thresholds, or add/remove circuit breakers
> # Experimenting with circuit breaker thresholds and types is much easier
> For these reasons, this issue proposes the following changes:
> # Add a ClusterProps field that describes cluster-level global circuit
> breakers
> ## One global circuit breaker per-class, with a query and update threshold
> ## The ability to override these values at the node level
> # Add a ClusterProps command `set-circuit-breakers` to set this ClusterProps
> field via the v2 API
> # Implement a global circuit breaker manager that handles ClusterProps
> changes by updating / adding / removing circuit breakers based on changes in
> configuration
> # ClusterProps-based circuit breakers override any environment-variable
> based global circuit breakers for ease of circuit breaker management
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