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Netflix / Hystrix

Hystrix is a latency and fault tolerance library designed to isolate points of access to remote systems, services and 3rd party libraries, stop cascading failure and enable resilience in complex distributed systems where failure is inevitable.
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com.netflix.hystrix.exception.HystrixRuntimeException: xxxx fallback execution rejected. #2019

Open clongulin opened 2 years ago

clongulin commented 2 years ago

When the interface request qps is 3k and I configure the parameter[FallbackIsolationSemaphoreMaxConcurrentRequests] to 30k, the fallback execution rejected error still exists. How to estimate the FallbackIsolationSemaphoreMaxConcurrentRequests?

com.netflix.hystrix.exception.HystrixRuntimeException: xxxx fallback execution rejected. at com.netflix.hystrix.AbstractCommand.handleFallbackRejectionByEmittingError(AbstractCommand.java:1043) at com.netflix.hystrix.AbstractCommand.getFallbackOrThrowException(AbstractCommand.java:875) at com.netflix.hystrix.AbstractCommand.handleShortCircuitViaFallback(AbstractCommand.java:982) at com.netflix.hystrix.AbstractCommand.applyHystrixSemantics(AbstractCommand.java:557) at com.netflix.hystrix.AbstractCommand.access$200(AbstractCommand.java:60) at com.netflix.hystrix.AbstractCommand$4.call(AbstractCommand.java:419) at com.netflix.hystrix.AbstractCommand$4.call(AbstractCommand.java:413)