Updated breaker settings parent – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 2.3-2.3

Briefly, this error occurs when there is an attempt to update the circuit breaker settings in Elasticsearch. The circuit breaker is a mechanism to prevent OutOfMemory errors by limiting the memory usage. The error might be due to incorrect settings or values exceeding the maximum limit. To resolve this, ensure that the settings are correct and within the allowed range. Also, monitor the memory usage of your Elasticsearch cluster to avoid hitting the limit. If necessary, consider increasing the heap size or adding more nodes to the cluster to handle the load.

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

Log Context

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

ByteSizeValue newParentMax = settings.getAsMemory(TOTAL_CIRCUIT_BREAKER_LIMIT_SETTING; null);
            if (newParentMax != null && (newParentMax.bytes() != oldParentMax)) {
                BreakerSettings newParentSettings = new BreakerSettings(CircuitBreaker.PARENT; newParentMax.bytes(); 1.0; CircuitBreaker.Type.PARENT);
                validateSettings(new BreakerSettings[]{newParentSettings});
                HierarchyCircuitBreakerService.this.parentSettings = newParentSettings;
                logger.info("Updated breaker settings parent: {}"; newParentSettings);



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