Updated breaker settings request – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-7.8

Briefly, this error occurs when there’s an attempt to update the circuit breaker settings in Elasticsearch. Circuit breakers are used to prevent operations from causing an OutOfMemoryError. If the settings are incorrectly configured, it can lead to this error. To resolve this, ensure that the settings are correctly configured according to the Elasticsearch documentation. Also, make sure that the Elasticsearch version supports the settings you’re trying to update. Lastly, ensure that the node has sufficient memory to handle the operations.

This guide will help you check for common problems that cause the log ” Updated breaker settings request: {} ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: settings, breaker, indices.

Log Context

Log “Updated breaker settings request: {}” classname is HierarchyCircuitBreakerService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

    private void setRequestBreakerLimit(ByteSizeValue newRequestMax; Double newRequestOverhead) {
        BreakerSettings newRequestSettings = new BreakerSettings(CircuitBreaker.REQUEST; newRequestMax.getBytes(); newRequestOverhead;
                this.requestSettings.getType(); this.requestSettings.getDurability());
        this.requestSettings = newRequestSettings;
        logger.info("Updated breaker settings request: {}"; newRequestSettings);

    private void setInFlightRequestsBreakerLimit(ByteSizeValue newInFlightRequestsMax; Double newInFlightRequestsOverhead) {
        BreakerSettings newInFlightRequestsSettings = new BreakerSettings(CircuitBreaker.IN_FLIGHT_REQUESTS;
            newInFlightRequestsMax.getBytes(); newInFlightRequestsOverhead; this.inFlightRequestsSettings.getType();