Configuring hystrix command properties using application.yaml in Spring-Boot application

Question

I am having same issue, where i am trying to override the hystrix properties in application.yaml. When I run the app & check the properties with localhost:port/app-context/hystrix.stream, I get all default values instead.

here is the hystrix config in my application.yaml

hystrix:
   command.StoreSubmission.execution.isolation.thread.timeoutInMilliseconds: 30000
   command.StoreSubmission.circuitBreaker.requestVolumeThreshold: 4
   command.StoreSubmission.circuitBreaker.sleepWindowInMilliseconds: 60000
   command.StoreSubmission.metrics.rollingStats.timeInMilliseconds: 180000
   collapser.StoreSubmission.maxRequestsInBatch: 1
   collapser.StoreSubmission.requestCache.enabled: FALSE
   threadpool.StoreSubmission.coreSize: 30
   threadpool.StoreSubmission.metrics.rollingStats.timeInMilliseconds: 180000

Here is what I see when I hit the url - localhost:port/app-context/hystrix.stream in browser [ this is same stream url used for hystrix dashboard ] -

data: {"type":"HystrixCommand","name":"storeSubmission","group":"StoreSubmission","currentTime":1435941064801,"isCircuitBreakerOpen":false,"errorPercentage":0,"errorCount":0,"requestCount":0,"rollingCountCollapsedRequests":0,"rollingCountExceptionsThrown":0,"rollingCountFailure":0,"rollingCountFallbackFailure":0,"rollingCountFallbackRejection":0,"rollingCountFallbackSuccess":0,"rollingCountResponsesFromCache":0,"rollingCountSemaphoreRejected":0,"rollingCountShortCircuited":0,"rollingCountSuccess":0,"rollingCountThreadPoolRejected":0,"rollingCountTimeout":0,"currentConcurrentExecutionCount":0,"latencyExecute_mean":0,"latencyExecute":{"0":0,"25":0,"50":0,"75":0,"90":0,"95":0,"99":0,"99.5":0,"100":0},"latencyTotal_mean":0,"latencyTotal":{"0":0,"25":0,"50":0,"75":0,"90":0,"95":0,"99":0,"99.5":0,"100":0},"propertyValue_circuitBreakerRequestVolumeThreshold":20,"propertyValue_circuitBreakerSleepWindowInMilliseconds":5000,"propertyValue_circuitBreakerErrorThresholdPercentage":50,"propertyValue_circuitBreakerForceOpen":false,"propertyValue_circuitBreakerForceClosed":false,"propertyValue_circuitBreakerEnabled":true,"propertyValue_executionIsolationStrategy":"THREAD","propertyValue_executionIsolationThreadTimeoutInMilliseconds":1000,"propertyValue_executionIsolationThreadInterruptOnTimeout":true,"propertyValue_executionIsolationThreadPoolKeyOverride":null,"propertyValue_executionIsolationSemaphoreMaxConcurrentRequests":10,"propertyValue_fallbackIsolationSemaphoreMaxConcurrentRequests":10,"propertyValue_metricsRollingStatisticalWindowInMilliseconds":10000,"propertyValue_requestCacheEnabled":true,"propertyValue_requestLogEnabled":true,"reportingHosts":1}

data: {"type":"HystrixThreadPool","name":"StoreSubmission","currentTime":1435941064801,"currentActiveCount":0,"currentCompletedTaskCount":35,"currentCorePoolSize":30,"currentLargestPoolSize":30,"currentMaximumPoolSize":30,"currentPoolSize":30,"currentQueueSize":0,"currentTaskCount":35,"rollingCountThreadsExecuted":0,"rollingMaxActiveThreads":0,"propertyValue_queueSizeRejectionThreshold":5,"propertyValue_metricsRollingStatisticalWindowInMilliseconds":180000,"reportingHosts":1}

The problem is with hystrix command & collapser properties, where as threadpool properties are set correctly. I have got following annotations in my @configuration class -

@EnableAutoConfiguration(exclude=MongoAutoConfiguration.class)
@EnableHystrix
@EnableHystrixDashboard

Has someone tried configuring hystrix command properties using application.yaml in thier Spring-Boot application, can help please?

I'm looking at this and notice the name coming from the HystrixCommand data is lower case and your configuration is uppercase. — spencergibb
I pasted your values in my application.yml and those values came through. — spencergibb
@spencergibb: 1. The name coming through in HystrixCommand data is method name which was wrapped by HystrixCommand. 2.In the configuration its groupKey value, actaully this should be commandKey value. 3. When you say these values come up, where? — Amrut
I am also working on this now & I think I am getting closer to the solution. will post the solution once I have tested it & know it works. — Amrut

Amrut Amrut · Accepted Answer · 2015-07-08T10:53:43

The main problem was that, I was using groupKey value instead of commandKey value to define the properties. The wiki page for these configuration properties - https://github.com/Netflix/Hystrix/wiki/Configuration#intro says -

hystrix.command.HystrixCommandKey.execution.isolation.thread.timeoutInMilliseconds

Replace the HystrixCommandKey portion of the property with the value you set for commandkey.

hystrix.threadpool.HystrixThreadPoolKey.coreSize

Replace the HystrixThreadPoolKey portion of the property with the value you set for threadPoolKey.

Here is how I define both commandKey & threadPoolKey over the method wrapped by HystrixCommand -

@HystrixCommand(groupKey = "StoreSubmission", commandKey = "StoreSubmission", threadPoolKey = "StoreSubmission")
public String storeSubmission(ReturnType returnType, InputStream is, String id) {
}

You can actually define both command & threadpool properties on the method within @HystixCommand annotation.

@HystrixCommand(groupKey = "StoreSubmission", commandKey = "StoreSubmission", threadPoolKey = "StoreSubmission", commandProperties = {
        @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "30000"),
        @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "4"),
        @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "60000"),
        @HystrixProperty(name = "metrics.rollingStats.timeInMilliseconds", value = "180000") }, threadPoolProperties = {
        @HystrixProperty(name = "coreSize", value = "30"),
        @HystrixProperty(name = "metrics.rollingStats.timeInMilliseconds", value = "180000") })
public String storeSubmission(ReturnType returnType, InputStream is, String id) {
}

I guess the best way to define these properties is in externalized application.yaml, that way you can control it better & change them for different environments.

Configuring hystrix command properties using application.yaml in Spring-Boot application

1 Answers