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Briefly, this error occurs when OpenSearch’s circuit breaker is triggered. The circuit breaker is a mechanism designed to prevent OutOfMemoryError. It gets triggered when the estimated query size exceeds a certain percentage of the heap memory. To resolve this issue, you can either increase the heap size, optimize your queries to use less memory, or adjust the circuit breaker settings to allow larger queries. However, be cautious with the last option as it might lead to OutOfMemoryError if not handled properly.
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This guide will help you check for common problems that cause the log ” [{}] New used memory {} [{}] for data of [{}] would be larger than configured breaker: {} [{}]; breaking ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: memory, breaker.
Log Context
Log “[{}] New used memory {} [{}] for data of [{}] would be larger than configured breaker: {} [{}]; breaking” classname is ChildMemoryCircuitBreaker.java.
We extracted the following from OpenSearch source code for those seeking an in-depth context :
new ByteSizeValue(bytes); label; new ByteSizeValue(newUsed);
memoryBytesLimit; new ByteSizeValue(memoryBytesLimit);
newUsedWithOverhead; new ByteSizeValue(newUsedWithOverhead));
}
if (memoryBytesLimit > 0 && newUsedWithOverhead > memoryBytesLimit) {
logger.warn("[{}] New used memory {} [{}] for data of [{}] would be larger than configured breaker: {} [{}]; breaking";
this.name;
newUsedWithOverhead; new ByteSizeValue(newUsedWithOverhead); label;
memoryBytesLimit; new ByteSizeValue(memoryBytesLimit));
circuitBreak(label; newUsedWithOverhead);
}
