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  1. JDK
  2. JDK-8293562

KeepAliveCache Blocks Threads while Closing Connections

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    • b18
    • generic
    • generic
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      Description

        ADDITIONAL SYSTEM INFORMATION :
        Linux : "Red Hat Enterprise Linux Server" "7.9 (Maipo)"
        Java : jdk-11.0.14


        A DESCRIPTION OF THE PROBLEM :
        Hello

        we faced issues with blocked threads on KeepAliveCache.get

        We have a front app which calls a backend app on the same server, sometimes we observe that the front app didn't work, blocked on the calls to the backend. The backend didn't seem receiving the requests…

        The local http call from the front App is done with Spring RestTemplate we observe simultaneous blocked threads on different parallelized servers at the same time…
        Without exceptions... We used Dynatrace and we can see the stack. I can send to you some screenshots. The app is stuck, impossible to use and after some minutes (15min) it comes back to live.


        KeepAliveCache.get
        Built-In JRE | sun.net.www.http

        HttpClient.New
        Built-In JRE | sun.net.www.http

        HttpClient.New
        Built-In JRE | sun.net.www.http

        HttpURLConnection.getNewHttpClient
        Built-In JRE | sun.net.www.protocol.http

        HttpURLConnection.plainConnect0
        Built-In JRE | sun.net.www.protocol.http

        HttpURLConnection.plainConnect
        Built-In JRE | sun.net.www.protocol.http

        HttpURLConnection.connect
        Built-In JRE | sun.net.www.protocol.http

        SimpleBufferingClientHttpRequest.executeInternal
        Built-In Spring | org.springframework.http.client

        AbstractBufferingClientHttpRequest.executeInternal
        Built-In Spring | org.springframework.http.client

        AbstractClientHttpRequest.execute
        Built-In Spring | org.springframework.http.client

        InterceptingClientHttpRequest$InterceptingRequestExecution.execute
        Built-In Spring | org.springframework.http.client

        TracingClientHttpRequestInterceptor.intercept
        Built-In Spring | org.springframework.cloud.sleuth.instrument.web.mvc

        LazyTraceClientHttpRequestInterceptor.intercept
        Built-In Spring | org.springframework.cloud.sleuth.instrument.web.client

        InterceptingClientHttpRequest$InterceptingRequestExecution.execute
        Built-In Spring | org.springframework.http.client

        InterceptingClientHttpRequest.executeInternal
        Built-In Spring | org.springframework.http.client

        AbstractBufferingClientHttpRequest.executeInternal
        Built-In Spring | org.springframework.http.client

        AbstractClientHttpRequest.execute
        Built-In Spring | org.springframework.http.client

        RestTemplate.doExecute
        Built-In Spring | org.springframework.web.client

        RestTemplate.execute
        Built-In Spring | org.springframework.web.client

        RestTemplate.exchange
        Built-In Spring | org.springframework.web.client

        HealthCheckController.isGridUpAndRunning
        Java | com.bnpparibas.dsibddf.cas.web

        here some java parameters :
        /apps/JRE11/lastJDK/bin/java -server -Xms3g -Xmx3g -XX:+AlwaysPreTouch -XX:+UseG1GC -XX:+ScavengeBeforeFullGC -XX:+DisableExplicitGC -XX:MaxGCPauseMillis=100 -XX:G1ReservePercent=10 -Dlogging.config=/……/log4j2.xml -jar /…./mywar.war



        KeepAliveCache.get
        Built-In JRE | sun.net.www.http

        HttpClient.New
        Built-In JRE | sun.net.www.http

        HttpClient.New
        Built-In JRE | sun.net.www.http

        HttpURLConnection.getNewHttpClient
        Built-In JRE | sun.net.www.protocol.http

        HttpURLConnection.plainConnect0
        Built-In JRE | sun.net.www.protocol.http

        HttpURLConnection.plainConnect
        Built-In JRE | sun.net.www.protocol.http

        HttpURLConnection.connect
        Built-In JRE | sun.net.www.protocol.http

        SimpleBufferingClientHttpRequest.executeInternal
        Built-In Spring | org.springframework.http.client

        AbstractBufferingClientHttpRequest.executeInternal
        Built-In Spring | org.springframework.http.client

        AbstractClientHttpRequest.execute
        Built-In Spring | org.springframework.http.client

        InterceptingClientHttpRequest$InterceptingRequestExecution.execute
        Built-In Spring | org.springframework.http.client

        TracingClientHttpRequestInterceptor.intercept
        Built-In Spring | org.springframework.cloud.sleuth.instrument.web.mvc

        LazyTraceClientHttpRequestInterceptor.intercept
        Built-In Spring | org.springframework.cloud.sleuth.instrument.web.client

        InterceptingClientHttpRequest$InterceptingRequestExecution.execute
        Built-In Spring | org.springframework.http.client

        InterceptingClientHttpRequest.executeInternal
        Built-In Spring | org.springframework.http.client

        AbstractBufferingClientHttpRequest.executeInternal
        Built-In Spring | org.springframework.http.client

        AbstractClientHttpRequest.execute
        Built-In Spring | org.springframework.http.client

        RestTemplate.doExecute
        Built-In Spring | org.springframework.web.client

        RestTemplate.execute
        Built-In Spring | org.springframework.web.client

        RestTemplate.exchange
        Built-In Spring | org.springframework.web.client

        HealthCheckController.isGridUpAndRunning
        Java | com.bnpparibas.dsibddf.cas.web

        here some java parameters :
        /apps/JRE11/lastJDK/bin/java -server -Xms3g -Xmx3g -XX:+AlwaysPreTouch -XX:+UseG1GC -XX:+ScavengeBeforeFullGC -XX:+DisableExplicitGC -XX:MaxGCPauseMillis=100 -XX:G1ReservePercent=10 -Dlogging.config=/……/log4j2.xml -jar /…./mywar.war


        FREQUENCY : occasionally


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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8296793 KeepAliveCache Blocks Threads while Closing Connections

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8299372 KeepAliveCache Blocks Threads while Closing Connections

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8299602 KeepAliveCache Blocks Threads while Closing Connections

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8310945 KeepAliveCache Blocks Threads while Closing Connections

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8332175 KeepAliveCache Blocks Threads while Closing Connections

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8297063 KeepAliveCache Blocks Threads while Closing Connections

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Closed
            duplicates

            Bug - A problem which impairs or prevents the functions of the product. JDK-8295250 Backport request for JDK-8293562

            • P3 - Major loss of function.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. JDK-8308253 KeepAliveCache Blocks Threads while Closing Connections - Regression

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. JDK-8296438 Objects locks held during SSL Socket close and waits for server close notify only with TLSv1.3

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Closed
            is blocked by

            Bug - A problem which impairs or prevents the functions of the product. JDK-8296943 sun/net/www/http/HttpClient/MultiThreadTest Failing after KeepAliveCache Backport

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            relates to

            Bug - A problem which impairs or prevents the functions of the product. JDK-8293921 SSLSocket.close waits for peer response

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Open

            Bug - A problem which impairs or prevents the functions of the product. JDK-8296438 Objects locks held during SSL Socket close and waits for server close notify only with TLSv1.3

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Closed
            links to

            Commit Commit openjdk/jdk8u-dev/853a87a8

            Commit Commit openjdk/jdk11u-dev/770c1f65

            Commit Commit openjdk/jdk17u-dev/244d1942

            Commit Commit openjdk/jdk/03f25a9c

            Review Review openjdk/jdk8u-dev/402

            Review Review openjdk/jdk8u-dev/409

            Review Review openjdk/jdk11u-dev/1825

            Review Review openjdk/jdk11u-dev/1890

            Review Review openjdk/jdk17u-dev/980

            Review Review openjdk/jdk/10401

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                djelinski Daniel Jelinski
                webbuggrp Webbug Group
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                  Updated:
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