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wilkinsona opened this issue Nov 19, 2019 · 2 comments
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InMemoryWebSessionStore makes blocking calls to UUID.randomUUID #24027

wilkinsona opened this issue Nov 19, 2019 · 2 comments
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@rstoyanchev
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in: web Issues in web modules (web, webmvc, webflux, websocket) type: bug A general bug
Milestone
5.2.2

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@wilkinsona
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Affects: 5.1.11.RELEASE

Via @kschlesselmann on Gitter:

java.lang.Error: Blocking call! java.io.FileInputStream#readBytes
    at reactor.blockhound.BlockHound$Builder.lambda$new$0(BlockHound.java:196) ~[blockhound-1.0.1.RELEASE.jar:na]
    at reactor.blockhound.BlockHound$Builder.lambda$install$6(BlockHound.java:318) ~[blockhound-1.0.1.RELEASE.jar:na]
    at reactor.blockhound.BlockHoundRuntime.checkBlocking(BlockHoundRuntime.java:46) ~[na:na]
    at java.base/java.io.FileInputStream.readBytes(FileInputStream.java) ~[na:na]
    at java.base/java.io.FileInputStream.read(FileInputStream.java:279) ~[na:na]
    at java.base/java.io.FilterInputStream.read(FilterInputStream.java:133) ~[na:na]
    at java.base/sun.security.provider.NativePRNG$RandomIO.readFully(NativePRNG.java:424) ~[na:na]
    at java.base/sun.security.provider.NativePRNG$RandomIO.ensureBufferValid(NativePRNG.java:526) ~[na:na]
    at java.base/sun.security.provider.NativePRNG$RandomIO.implNextBytes(NativePRNG.java:545) ~[na:na]
    at java.base/sun.security.provider.NativePRNG.engineNextBytes(NativePRNG.java:220) ~[na:na]
    at java.base/java.security.SecureRandom.nextBytes(SecureRandom.java:741) ~[na:na]
    at java.base/java.util.UUID.randomUUID(UUID.java:150) ~[na:na]
    at org.springframework.util.JdkIdGenerator.generateId(JdkIdGenerator.java:31) ~[spring-core-5.1.11.RELEASE.jar:5.1.11.RELEASE]
    at org.springframework.web.server.session.InMemoryWebSessionStore$InMemoryWebSession.<init>(InMemoryWebSessionStore.java:165) ~[spring-web-5.1.11.RELEASE.jar:5.1.11.RELEASE]
    at org.springframework.web.server.session.InMemoryWebSessionStore.lambda$createWebSession$0(InMemoryWebSessionStore.java:116) ~[spring-web-5.1.11.RELEASE.jar:5.1.11.RELEASE]
    at reactor.core.publisher.MonoSupplier.subscribe(MonoSupplier.java:56) ~[reactor-core-3.2.12.RELEASE.jar:3.2.12.RELEASE]
...
@spring-projects-issues spring-projects-issues added the status: waiting-for-triage An issue we've not yet triaged or decided on label Nov 19, 2019
@rstoyanchev rstoyanchev added in: web Issues in web modules (web, webmvc, webflux, websocket) type: bug A general bug and removed status: waiting-for-triage An issue we've not yet triaged or decided on labels Nov 19, 2019
@rstoyanchev rstoyanchev added this to the 5.2.2 milestone Nov 19, 2019
@rstoyanchev
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Scheduling for 5.2.2 with consideration for backport once a solution is identified.

@rstoyanchev rstoyanchev self-assigned this Nov 19, 2019
@stokpop stokpop mentioned this issue Nov 12, 2020
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@rstoyanchev rstoyanchev mentioned this issue Jan 20, 2021
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@gourav
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gourav commented Sep 24, 2022 •
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Hello @rstoyanchev & @wilkinsona
I encountered block hound exception today with latest version of Spring Boot. I don't think this is fixed yet.

I think changeSessionId is still blocking.

Please consider stack trace below.


reactor.blockhound.BlockingOperationError: Blocking call! java.io.FileInputStream#readBytes
	at java.io.FileInputStream.readBytes(FileInputStream.java) ~[?:?]
	Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException: 
Error has been observed at the following site(s):
	*__checkpoint ⇢ org.springframework.security.web.server.authentication.logout.LogoutWebFilter [DefaultWebFilterChain]
	*__checkpoint ⇢ org.springframework.security.web.server.savedrequest.ServerRequestCacheWebFilter [DefaultWebFilterChain]
	*__checkpoint ⇢ org.springframework.security.web.server.context.SecurityContextServerWebExchangeWebFilter [DefaultWebFilterChain]
	*__checkpoint ⇢ org.springframework.security.web.server.authentication.AuthenticationWebFilter [DefaultWebFilterChain]
	*__checkpoint ⇢ org.springframework.security.web.server.context.ReactorContextWebFilter [DefaultWebFilterChain]
	*__checkpoint ⇢ org.springframework.security.web.server.header.HttpHeaderWriterWebFilter [DefaultWebFilterChain]
	*__checkpoint ⇢ org.springframework.security.config.web.server.ServerHttpSecurity$ServerWebExchangeReactorContextWebFilter [DefaultWebFilterChain]
	*__checkpoint ⇢ org.springframework.security.web.server.WebFilterChainProxy [DefaultWebFilterChain]
	*__checkpoint ⇢ HTTP POST "/logout" [ExceptionHandlingWebHandler]
Original Stack Trace:
		at java.io.FileInputStream.readBytes(FileInputStream.java) ~[?:?]
		at java.io.FileInputStream.read(FileInputStream.java:276) ~[?:?]
		at java.io.FilterInputStream.read(FilterInputStream.java:132) ~[?:?]
		at sun.security.provider.NativePRNG$RandomIO.readFully(NativePRNG.java:425) ~[?:?]
		at sun.security.provider.NativePRNG$RandomIO.ensureBufferValid(NativePRNG.java:528) ~[?:?]
		at sun.security.provider.NativePRNG$RandomIO.implNextBytes(NativePRNG.java:547) ~[?:?]
		at sun.security.provider.NativePRNG.engineNextBytes(NativePRNG.java:221) ~[?:?]
		at java.security.SecureRandom.nextBytes(SecureRandom.java:758) ~[?:?]
		at java.util.UUID.randomUUID(UUID.java:151) ~[?:?]
		at org.springframework.util.JdkIdGenerator.generateId(JdkIdGenerator.java:31) ~[spring-core-5.3.22.jar:5.3.22]
		at org.springframework.web.server.session.InMemoryWebSessionStore$InMemoryWebSession.changeSessionId(InMemoryWebSessionStore.java:234) ~[spring-web-5.3.22.jar:5.3.22]
		at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:125) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:200) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1816) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoCacheTime.subscribeOrReturn(MonoCacheTime.java:151) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Mono.subscribe(Mono.java:4382) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.subscribeNext(MonoIgnoreThen.java:263) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:51) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:157) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1816) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoFlatMap$FlatMapInner.onNext(MonoFlatMap.java:249) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxDefaultIfEmpty$DefaultIfEmptySubscriber.onNext(FluxDefaultIfEmpty.java:101) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:129) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:129) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1816) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoFlatMap$FlatMapInner.onNext(MonoFlatMap.java:249) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1816) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:151) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1816) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoCacheTime.subscribeOrReturn(MonoCacheTime.java:151) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:57) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:157) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onNext(FluxFilterFuseable.java:118) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2398) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.request(FluxFilterFuseable.java:191) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoFlatMap$FlatMapMain.onSubscribe(MonoFlatMap.java:110) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFilterFuseable$FilterFuseableSubscriber.onSubscribe(FluxFilterFuseable.java:87) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoCurrentContext.subscribe(MonoCurrentContext.java:36) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:157) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxMap$MapSubscriber.onNext(FluxMap.java:122) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:74) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFilter$FilterSubscriber.onNext(FluxFilter.java:113) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxPeekFuseable$PeekConditionalSubscriber.onNext(FluxPeekFuseable.java:854) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:74) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:82) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFilter$FilterSubscriber.onNext(FluxFilter.java:113) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFlatMap$FlatMapMain.tryEmitScalar(FluxFlatMap.java:488) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFlatMap$FlatMapMain.onNext(FluxFlatMap.java:421) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onNext(FluxPeekFuseable.java:210) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable$IterableSubscription.slowPath(FluxIterable.java:272) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable$IterableSubscription.request(FluxIterable.java:230) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.request(FluxPeekFuseable.java:144) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFlatMap$FlatMapMain.onSubscribe(FluxFlatMap.java:371) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onSubscribe(FluxPeekFuseable.java:178) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:165) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:87) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:157) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1816) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxDefaultIfEmpty$DefaultIfEmptySubscriber.onComplete(FluxDefaultIfEmpty.java:109) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxMap$MapSubscriber.onComplete(FluxMap.java:144) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxMap$MapSubscriber.onComplete(FluxMap.java:144) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFilter$FilterSubscriber.onComplete(FluxFilter.java:166) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxMap$MapConditionalSubscriber.onComplete(FluxMap.java:275) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1817) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoCacheTime$CoordinatorSubscriber.signalCached(MonoCacheTime.java:337) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoCacheTime$CoordinatorSubscriber.onNext(MonoCacheTime.java:354) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxPeek$PeekSubscriber.onNext(FluxPeek.java:200) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:74) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:82) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.drain(FluxConcatMap.java:431) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxConcatMap$ConcatMapImmediate.onSubscribe(FluxConcatMap.java:219) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:165) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:87) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoCacheTime.subscribeOrReturn(MonoCacheTime.java:143) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:57) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Mono.subscribe(Mono.java:4397) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.subscribeNext(MonoIgnoreThen.java:263) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:51) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Mono.subscribe(Mono.java:4397) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onComplete(FluxSwitchIfEmpty.java:82) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoFlatMap$FlatMapMain.onComplete(MonoFlatMap.java:181) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFilter$FilterSubscriber.onComplete(FluxFilter.java:166) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxPeekFuseable$PeekConditionalSubscriber.onComplete(FluxPeekFuseable.java:940) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onComplete(FluxSwitchIfEmpty.java:85) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Operators$ScalarSubscription.request(Operators.java:2400) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.set(Operators.java:2194) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Operators$MultiSubscriptionSubscriber.onSubscribe(Operators.java:2068) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoJust.subscribe(MonoJust.java:55) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Mono.subscribe(Mono.java:4397) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onComplete(FluxSwitchIfEmpty.java:82) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoNext$NextSubscriber.onComplete(MonoNext.java:102) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFilter$FilterSubscriber.onComplete(FluxFilter.java:166) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFlatMap$FlatMapMain.checkTerminated(FluxFlatMap.java:846) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFlatMap$FlatMapMain.drainLoop(FluxFlatMap.java:608) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFlatMap$FlatMapMain.drain(FluxFlatMap.java:588) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFlatMap$FlatMapMain.onComplete(FluxFlatMap.java:465) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onComplete(FluxPeekFuseable.java:277) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable$IterableSubscription.slowPath(FluxIterable.java:294) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable$IterableSubscription.request(FluxIterable.java:230) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.request(FluxPeekFuseable.java:144) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFlatMap$FlatMapMain.onSubscribe(FluxFlatMap.java:371) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxPeekFuseable$PeekFuseableSubscriber.onSubscribe(FluxPeekFuseable.java:178) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:165) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:87) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:157) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:129) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxMapFuseable$MapFuseableSubscriber.onNext(FluxMapFuseable.java:129) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1816) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoFlatMap$FlatMapInner.onNext(MonoFlatMap.java:249) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1816) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoCollectList$MonoCollectListSubscriber.onComplete(MonoCollectList.java:129) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable$IterableSubscription.fastPath(FluxIterable.java:362) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable$IterableSubscription.request(FluxIterable.java:227) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoCollectList$MonoCollectListSubscriber.onSubscribe(MonoCollectList.java:80) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:165) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:87) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoFromFluxOperator.subscribe(MonoFromFluxOperator.java:81) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoFlatMap$FlatMapMain.onNext(MonoFlatMap.java:157) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxSwitchIfEmpty$SwitchIfEmptySubscriber.onNext(FluxSwitchIfEmpty.java:74) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoNext$NextSubscriber.onNext(MonoNext.java:82) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFilterWhen$FluxFilterWhenSubscriber.drain(FluxFilterWhen.java:301) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFilterWhen$FluxFilterWhenSubscriber.onNext(FluxFilterWhen.java:140) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable$IterableSubscription.slowPath(FluxIterable.java:272) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable$IterableSubscription.request(FluxIterable.java:230) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxFilterWhen$FluxFilterWhenSubscriber.onSubscribe(FluxFilterWhen.java:200) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:165) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.FluxIterable.subscribe(FluxIterable.java:87) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:52) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.Mono.subscribe(Mono.java:4397) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.subscribeNext(MonoIgnoreThen.java:263) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoIgnoreThen.subscribe(MonoIgnoreThen.java:51) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.InternalMonoOperator.subscribe(InternalMonoOperator.java:64) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.core.publisher.MonoDeferContextual.subscribe(MonoDeferContextual.java:55) ~[reactor-core-3.4.22.jar:3.4.22]
		at reactor.netty.http.server.HttpServer$HttpServerHandle.onStateChange(HttpServer.java:967) ~[reactor-netty-http-1.0.22.jar:1.0.22]
		at reactor.netty.ReactorNetty$CompositeConnectionObserver.onStateChange(ReactorNetty.java:677) ~[reactor-netty-core-1.0.22.jar:1.0.22]
		at reactor.netty.transport.ServerTransport$ChildObserver.onStateChange(ServerTransport.java:478) ~[reactor-netty-core-1.0.22.jar:1.0.22]
		at reactor.netty.http.server.HttpServerOperations.onInboundNext(HttpServerOperations.java:570) ~[reactor-netty-http-1.0.22.jar:1.0.22]
		at reactor.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:93) ~[reactor-netty-core-1.0.22.jar:1.0.22]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at reactor.netty.http.server.HttpTrafficHandler.channelRead(HttpTrafficHandler.java:214) ~[reactor-netty-http-1.0.22.jar:1.0.22]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:327) ~[netty-codec-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:299) ~[netty-codec-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:722) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:658) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:584) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:496) ~[netty-transport-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.79.Final.jar:4.1.79.Final]
		at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.79.Final.jar:4.1.79.Final]
		at java.lang.Thread.run(Thread.java:833) ~[?:?]

If there is anything else required from my end, please do let me know.

@rstoyanchev rstoyanchev mentioned this issue Jan 27, 2023
Closed
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in: web Issues in web modules (web, webmvc, webflux, websocket) type: bug A general bug
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@rstoyanchev @wilkinsona @spring-projects-issues @gourav