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StackWalker takes suspiciously long during getLogger call #597

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@hiddenalpha

Stumbled over this log below. Is this maybe related to stackoverflow.com/questions/46236326/log4j-slow-initialization or
stackoverflow.com/questions/42830383/logmanager-getlogger-stalls-application
?

Cannot yet make much sense out of it. But to me I cannot get why something as "StackWalker.callStackWalk" needs to be called during a "getLogger()" call.

2024-06-17T16:59:30,630 int houston WARN BlockedThreadChecker - Thread Thread[vert.x-eventloop-thread-2,5,main] has been blocked for 177 ms, time limit is 8 ms
io.vertx.core.VertxException: Thread blocked
        at java.util.stream.AbstractPipeline.wrapSink(AbstractPipeline.java:522) ~[?:?]
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) ~[?:?]
        at java.util.stream.FindOps$FindOp.evaluateSequential(FindOps.java:150) ~[?:?]
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:?]
        at java.util.stream.ReferencePipeline.findFirst(ReferencePipeline.java:543) ~[?:?]
        at org.apache.logging.log4j.util.StackLocator.lambda$getCallerClass$2(StackLocator.java:57) ~[log4j-api-2.19.0.jar:2.19.0]
        at org.apache.logging.log4j.util.StackLocator$$Lambda$26/0x0000000840088840.apply(Unknown Source) ~[?:?]
        at java.lang.StackStreamFactory$StackFrameTraverser.consumeFrames(StackStreamFactory.java:534) ~[?:?]
        at java.lang.StackStreamFactory$AbstractStackWalker.doStackWalk(StackStreamFactory.java:306) ~[?:?]
        at java.lang.StackStreamFactory$AbstractStackWalker.callStackWalk(Native Method) ~[?:?]
        at java.lang.StackStreamFactory$AbstractStackWalker.beginStackWalk(StackStreamFactory.java:370) ~[?:?]
        at java.lang.StackStreamFactory$AbstractStackWalker.walk(StackStreamFactory.java:243) ~[?:?]
        at java.lang.StackWalker.walk(StackWalker.java:498) ~[?:?]
        at org.apache.logging.log4j.util.StackLocator.getCallerClass(StackLocator.java:51) ~[log4j-api-2.19.0.jar:2.19.0]
        at org.apache.logging.log4j.util.StackLocatorUtil.getCallerClass(StackLocatorUtil.java:104) ~[log4j-api-2.19.0.jar:2.19.0]
        at org.apache.logging.slf4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:56) ~[log4j-slf4j2-impl-2.19.0.jar:2.19.0]
        at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:47) ~[log4j-api-2.19.0.jar:2.19.0]
        at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:33) ~[log4j-slf4j2-impl-2.19.0.jar:2.19.0]
        at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:358) ~[slf4j-api-2.0.1.jar:2.0.1]
        at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383) ~[slf4j-api-2.0.1.jar:2.0.1]
        at org.swisspush.gateleen.core.http.RequestLoggerFactory.getLogger(RequestLoggerFactory.java:45) ~[gateleen-core-2.1.8.jar:?]
        at org.swisspush.gateleen.core.http.RequestLoggerFactory.getLogger(RequestLoggerFactory.java:19) ~[gateleen-core-2.1.8.jar:?]
        at org.swisspush.gateleen.routing.Forwarder.handle(Forwarder.java:125) ~[gateleen-routing-2.1.8.jar:?]
        at org.swisspush.gateleen.hook.Route.forward(Route.java:236) ~[gateleen-hook-2.1.8.jar:?]
        at org.swisspush.gateleen.hook.Route.forward(Route.java:252) ~[gateleen-hook-2.1.8.jar:?]
        at org.swisspush.gateleen.hook.HookHandler.routeRequestIfNeeded(HookHandler.java:728) ~[gateleen-hook-2.1.8.jar:?]
        at org.swisspush.gateleen.hook.HookHandler.handle(HookHandler.java:583) ~[gateleen-hook-2.1.8.jar:?]
        at ch.post.it.paisa.houston.process.main.MainVerticle.lambda$createRouter$4(MainVerticle.java:643) ~[houston-process-02.01.63.00.jar:?]
        at ch.post.it.paisa.houston.process.main.MainVerticle$$Lambda$1537/0x0000000840786c40.handle(Unknown Source) ~[?:?]
        at org.swisspush.gateleen.security.authorization.Authorizer.authorize(Authorizer.java:142) ~[gateleen-security-2.1.8.jar:?]
        at ch.post.it.paisa.houston.process.main.MainVerticle.lambda$createRouter$5(MainVerticle.java:606) ~[houston-process-02.01.63.00.jar:?]
        at ch.post.it.paisa.houston.process.main.MainVerticle$$Lambda$1296/0x00000008406fdc40.handle(Unknown Source) ~[?:?]
        at org.swisspush.gateleen.core.http.LocalHttpClientRequest.ensureBound(LocalHttpClientRequest.java:744) ~[gateleen-core-2.1.8.jar:?]
        at org.swisspush.gateleen.core.http.LocalHttpClientRequest.write(LocalHttpClientRequest.java:760) ~[gateleen-core-2.1.8.jar:?]
        at org.swisspush.gateleen.core.http.LocalHttpClientRequest.end(LocalHttpClientRequest.java:802) ~[gateleen-core-2.1.8.jar:?]
        at io.vertx.core.http.HttpClientRequest.send(HttpClientRequest.java:429) ~[vertx-core-4.5.1.jar:4.5.1]
        at org.swisspush.gateleen.queue.queuing.QueueProcessor.lambda$executeQueuedRequest$10(QueueProcessor.java:293) ~[gateleen-queue-2.1.8.jar:?]
        at org.swisspush.gateleen.queue.queuing.QueueProcessor$$Lambda$1517/0x000000084077f040.handle(Unknown Source) ~[?:?]
        at io.vertx.core.impl.future.SucceededFuture.onComplete(SucceededFuture.java:81) ~[vertx-core-4.5.1.jar:4.5.1]
        at org.swisspush.gateleen.queue.queuing.QueueProcessor.executeQueuedRequest(QueueProcessor.java:240) ~[gateleen-queue-2.1.8.jar:?]
        at org.swisspush.gateleen.queue.queuing.QueueProcessor.lambda$startQueueProcessing$2(QueueProcessor.java:98) ~[gateleen-queue-2.1.8.jar:?]
        at org.swisspush.gateleen.queue.queuing.QueueProcessor$$Lambda$1298/0x00000008406fc040.handle(Unknown Source) ~[?:?]
        at io.vertx.core.impl.ContextInternal.dispatch(ContextInternal.java:276) ~[vertx-core-4.5.1.jar:4.5.1]
        at io.vertx.core.eventbus.impl.MessageConsumerImpl.dispatch(MessageConsumerImpl.java:177) ~[vertx-core-4.5.1.jar:4.5.1]
        at io.vertx.core.eventbus.impl.HandlerRegistration$InboundDeliveryContext.execute(HandlerRegistration.java:137) ~[vertx-core-4.5.1.jar:4.5.1]
        at io.vertx.core.eventbus.impl.DeliveryContextBase.next(DeliveryContextBase.java:80) ~[vertx-core-4.5.1.jar:4.5.1]
        at io.vertx.core.eventbus.impl.DeliveryContextBase.dispatch(DeliveryContextBase.java:43) ~[vertx-core-4.5.1.jar:4.5.1]
        at io.vertx.core.eventbus.impl.HandlerRegistration.dispatch(HandlerRegistration.java:98) ~[vertx-core-4.5.1.jar:4.5.1]
        at io.vertx.core.eventbus.impl.MessageConsumerImpl.deliver(MessageConsumerImpl.java:183) ~[vertx-core-4.5.1.jar:4.5.1]
        at io.vertx.core.eventbus.impl.MessageConsumerImpl.doReceive(MessageConsumerImpl.java:168) ~[vertx-core-4.5.1.jar:4.5.1]
        at io.vertx.core.eventbus.impl.HandlerRegistration.lambda$receive$0(HandlerRegistration.java:49) ~[vertx-core-4.5.1.jar:4.5.1]
        at io.vertx.core.eventbus.impl.HandlerRegistration$$Lambda$554/0x000000084050bc40.run(Unknown Source) ~[?:?]
        at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:173) ~[netty-common-4.1.103.Final.jar:4.1.103.Final]
        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:166) ~[netty-common-4.1.103.Final.jar:4.1.103.Final]
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) ~[netty-common-4.1.103.Final.jar:4.1.103.Final]
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:566) ~[netty-transport-4.1.103.Final.jar:4.1.103.Final]
        at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.103.Final.jar:4.1.103.Final]
        at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.103.Final.jar:4.1.103.Final]
        at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.103.Final.jar:4.1.103.Final]
        at java.lang.Thread.run(Thread.java:829) ~[?:?]

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