Deadlock when using feign in @PostConstruct with CompletableFuture

Aperta
  • Qualcosa non va?
#2,544 1 commento 0 reazioni 0 assegnatari Vedi su GitHub

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Valutazione

Difficoltà
4/5
Tempo stimato
3-5 giorni
Idoneità per principianti
25/100
Tipo di issue
Bug
Chiarezza
Da chiarire
Stato di attività
Ferma
Stack tecnologico
java, spring
Ambito
api, backend

Direzione di ricerca

Inizia con il percorso @PostConstruct segnalato e l’esecuzione di CompletableFuture mostrata nel thread dump. Traccia le chiamate attraverso SpringDecoder, ResponseEntityDecoder e SynchronousMethodHandler, quindi riproduci la chiamata Feign da CompletableFuture durante l’inizializzazione del bean. Il lavoro è completato quando viene identificata la causa del deadlock e viene documentata o verificata una risoluzione sicura.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

feedback provided question 
"ForkJoinPool.commonPool-worker-1" #39 daemon prio=5 os_prio=31 cpu=2.77ms elapsed=14.76s tid=0x000000015e4a4600 nid=0x8c0b waiting for monitor entry  [0x0000000170441000]
   java.lang.Thread.State: BLOCKED (on object monitor)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:217)
        - waiting to lock <0x0000000700dfab40> (a java.util.concurrent.ConcurrentHashMap)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:335)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:275)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
        at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1443)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory$DependencyObjectProvider.getObject(DefaultListableBeanFactory.java:2070)
        at org.springframework.cloud.openfeign.support.SpringDecoder.decode(SpringDecoder.java:66)
        at org.springframework.cloud.openfeign.support.ResponseEntityDecoder.decode(ResponseEntityDecoder.java:62)
        at feign.optionals.OptionalDecoder.decode(OptionalDecoder.java:36)
        at feign.InvocationContext.decode(InvocationContext.java:114)
        at feign.InvocationContext.proceed(InvocationContext.java:88)
        at feign.ResponseInterceptor$Chain$$Lambda$1184/0x000000b001941a48.next(Unknown Source)
        at feign.ResponseHandler.handleResponse(ResponseHandler.java:63)
        at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:114)
        at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:70)
        at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:99)
        at jdk.proxy2.$Proxy159.fetch(jdk.proxy2/Unknown Source)
        at hiyen.galmanhae.dataprocess.application.CongestionService.fetch(CongestionService.java:22)
        at hiyen.galmanhae.dataprocess.DataProcessor.aggregatePlace(DataProcessor.java:61)
        at hiyen.galmanhae.dataprocess.DataProcessor.lambda$toFuture$0(DataProcessor.java:50)
        at hiyen.galmanhae.dataprocess.DataProcessor$$Lambda$1520/0x000000b001b86a68.get(Unknown Source)
        at java.util.concurrent.CompletableFuture$AsyncSupply.run([email protected]/CompletableFuture.java:1768)
        at java.util.concurrent.CompletableFuture$AsyncSupply.exec([email protected]/CompletableFuture.java:1760)
        at java.util.concurrent.ForkJoinTask.doExec([email protected]/ForkJoinTask.java:373)
        at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec([email protected]/ForkJoinPool.java:1182)
        at java.util.concurrent.ForkJoinPool.scan([email protected]/ForkJoinPool.java:1655)
        at java.util.concurrent.ForkJoinPool.runWorker([email protected]/ForkJoinPool.java:1622)
        at java.util.concurrent.ForkJoinWorkerThread.run([email protected]/ForkJoinWorkerThread.java:165)

"ForkJoinPool.commonPool-worker-2" #40 daemon prio=5 os_prio=31 cpu=3.25ms elapsed=14.76s tid=0x000000015e4a4c00 nid=0x9e1b waiting for monitor entry  [0x000000017064d000]
   java.lang.Thread.State: BLOCKED (on object monitor)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:217)
        - waiting to lock <0x0000000700dfab40> (a java.util.concurrent.ConcurrentHashMap)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:335)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:275)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
        at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1443)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory$DependencyObjectProvider.getObject(DefaultListableBeanFactory.java:2070)
        at org.springframework.cloud.openfeign.support.SpringDecoder.decode(SpringDecoder.java:66)
        at org.springframework.cloud.openfeign.support.ResponseEntityDecoder.decode(ResponseEntityDecoder.java:62)
        at feign.optionals.OptionalDecoder.decode(OptionalDecoder.java:36)
        at feign.InvocationContext.decode(InvocationContext.java:114)
        at feign.InvocationContext.proceed(InvocationContext.java:88)
        at feign.ResponseInterceptor$Chain$$Lambda$1184/0x000000b001941a48.next(Unknown Source)
        at feign.ResponseHandler.handleResponse(ResponseHandler.java:63)
        at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:114)
        at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:70)
        at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:99)
        at jdk.proxy2.$Proxy159.fetch(jdk.proxy2/Unknown Source)
        at hiyen.galmanhae.dataprocess.application.CongestionService.fetch(CongestionService.java:22)
        at hiyen.galmanhae.dataprocess.DataProcessor.aggregatePlace(DataProcessor.java:61)
        at hiyen.galmanhae.dataprocess.DataProcessor.lambda$toFuture$0(DataProcessor.java:50)
        at hiyen.galmanhae.dataprocess.DataProcessor$$Lambda$1520/0x000000b001b86a68.get(Unknown Source)
        at java.util.concurrent.CompletableFuture$AsyncSupply.run([email protected]/CompletableFuture.java:1768)
        at java.util.concurrent.CompletableFuture$AsyncSupply.exec([email protected]/CompletableFuture.java:1760)
        at java.util.concurrent.ForkJoinTask.doExec([email protected]/ForkJoinTask.java:373)
        at java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec([email protected]/ForkJoinPool.java:1182)
        at java.util.concurrent.ForkJoinPool.scan([email protected]/ForkJoinPool.java:1655)
        at java.util.concurrent.ForkJoinPool.runWorker([email protected]/ForkJoinPool.java:1622)
        at java.util.concurrent.ForkJoinWorkerThread.run([email protected]/ForkJoinWorkerThread.java:165)

I have no problem when using feignclient in @PostConstruct but when I use it with CompletableFuture, I get above deadlock

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