Question

我正在使用hystrix 1.3.7，我的hystrix命令也定义了一个回退方法。所以设置如下：

public final Optional<ImageData> run() throws Exception {
 // does api call to get resized image from a service
}

@Override
public final Optional<ImageData> getFallback() {
    // falls back to processing the image locally.
}

但是，我已经意识到Hystrix发生超时时有时（并非所有时间），似乎它没有在getFallback方法中执行逻辑并抛出HsytrixRuntimeException。这是堆栈跟踪：

com.netflix.hystrix.exception.HystrixRuntimeException: imageResize timed-out and fallback failed.
at com.netflix.hystrix.AbstractCommand.handleTimeoutViaFallback(AbstractCommand.java:980)
at com.netflix.hystrix.AbstractCommand.access$500(AbstractCommand.java:59)
at com.netflix.hystrix.AbstractCommand$12.call(AbstractCommand.java:595)
at com.netflix.hystrix.AbstractCommand$12.call(AbstractCommand.java:587)
at rx.internal.operators.OperatorOnErrorResumeNextViaFunction$1.onError(OperatorOnErrorResumeNextViaFunction.java:77)
at rx.internal.operators.OperatorDoOnEach$1.onError(OperatorDoOnEach.java:70)
at rx.internal.operators.OperatorDoOnEach$1.onError(OperatorDoOnEach.java:70)
at com.netflix.hystrix.AbstractCommand$HystrixObservableTimeoutOperator$1.run(AbstractCommand.java:1121)
at com.netflix.hystrix.strategy.concurrency.HystrixContextRunnable$1.call(HystrixContextRunnable.java:41)
at com.netflix.hystrix.strategy.concurrency.HystrixContextRunnable$1.call(HystrixContextRunnable.java:37)
at com.netflix.hystrix.strategy.concurrency.HystrixContextRunnable.run(HystrixContextRunnable.java:57)
at com.netflix.hystrix.AbstractCommand$HystrixObservableTimeoutOperator$2.tick(AbstractCommand.java:1138)
at com.netflix.hystrix.util.HystrixTimer$1.run(HystrixTimer.java:99)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

这可能是因为hystrix配置不正确吗？任何帮助将不胜感激。

Answer 1

从错误日志中我了解到run（）方法失败并且调用了回退。你在后备内部的逻辑似乎也失败了。建议是，回退应该以永不失败的方式编码。如果失败，请检查您的备用代码。要么处理后备内部的故障，要么只是将逻辑从后退移到某处。

HystrixRunTimeException：<operation> timed-out和fallback failed

1 个答案: