【发布时间】：2021-04-30 07:08:15
【问题描述】：
当应用程序线程大量尝试记录时线程被阻塞。以前有没有遇到过这种情况。异步记录器是否解决了这方面的问题。下面是线程转储，表明应用程序线程在尝试大量记录异常时被阻塞。多个线程进入 BLOCKED 状态
"app[LARLAca][TG][T#7]" #55 daemon prio=5 os_prio=0 tid=0x00007f2de800b800 nid=0x2fee runnable [0x00007f2e048ee000]
java.lang.Thread.State: RUNNABLE
at java.util.zip.ZipFile.getEntry(Native Method)
at java.util.zip.ZipFile.getEntry(ZipFile.java:316)
- locked <0x00007f2f5c2e1310> (a java.util.jar.JarFile)
at java.util.jar.JarFile.getEntry(JarFile.java:240)
at java.util.jar.JarFile.getJarEntry(JarFile.java:223)
at sun.misc.URLClassPath$JarLoader.getResource(URLClassPath.java:1054)
at sun.misc.URLClassPath.getResource(URLClassPath.java:249)
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
at java.lang.ClassLoader.loadClass(ClassLoader.java:419)
- locked <0x00007f2f5e3c4d30> (a java.lang.Object)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
at java.lang.ClassLoader.loadClass(ClassLoader.java:352)
at org.apache.logging.log4j.core.util.Loader.loadClass(Loader.java:240)
at org.apache.logging.log4j.core.impl.ThrowableProxy.loadClass(ThrowableProxy.java:633)
at org.apache.logging.log4j.core.impl.ThrowableProxy.loadClass(ThrowableProxy.java:624)
at org.apache.logging.log4j.core.impl.ThrowableProxy.toExtendedStackTrace(ThrowableProxy.java:738)
at org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:138)
at org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:122)
at org.apache.logging.log4j.core.impl.Log4jLogEvent.getThrownProxy(Log4jLogEvent.java:605)
at org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverter.format(ExtendedThrowablePatternConverter.java:64)
at org.apache.logging.log4j.core.pattern.PatternFormatter.format(PatternFormatter.java:38)
at org.apache.logging.log4j.core.layout.PatternLayout$PatternSerializer.toSerializable(PatternLayout.java:334)
at org.apache.logging.log4j.core.layout.PatternLayout.toText(PatternLayout.java:233)
at org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:218)
at org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:58)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.directEncodeEvent(AbstractOutputStreamAppender.java:177)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.tryAppend(AbstractOutputStreamAppender.java:170)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:161)
at org.apache.logging.log4j.core.appender.RollingFileAppender.append(RollingFileAppender.java:309)
at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129)
at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84)
at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:464)
at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:448)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:431)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:406)
at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:63)
at org.apache.logging.log4j.core.Logger.logMessage(Logger.java:146)
at org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2170)
at org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2125)
at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2108)
at org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:1991)
at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1835)
at org.apache.logging.log4j.spi.AbstractLogger.warn(AbstractLogger.java:2684)
"app[LARLAca][TG][T#1]" #44 daemon prio=5 os_prio=0 tid=0x00007f36fe6b3000 nid=0x2fe3 waiting for monitor entry [0x00007f2e06bfb000]
java.lang.Thread.State: BLOCKED (on object monitor)
at java.lang.ClassLoader.loadClass(ClassLoader.java:399)
- waiting to lock <0x00007f2f5e3c4d30> (a java.lang.Object)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
at java.lang.ClassLoader.loadClass(ClassLoader.java:352)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.apache.logging.log4j.util.LoaderUtil.loadClass(LoaderUtil.java:168)
at org.apache.logging.log4j.core.impl.ThrowableProxy.loadClass(ThrowableProxy.java:622)
at org.apache.logging.log4j.core.impl.ThrowableProxy.toExtendedStackTrace(ThrowableProxy.java:738)
at org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:138)
at org.apache.logging.log4j.core.impl.ThrowableProxy.<init>(ThrowableProxy.java:122)
at org.apache.logging.log4j.core.impl.Log4jLogEvent.getThrownProxy(Log4jLogEvent.java:605)
at org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverter.format(ExtendedThrowablePatternConverter.java:64)
at org.apache.logging.log4j.core.pattern.PatternFormatter.format(PatternFormatter.java:38)
at org.apache.logging.log4j.core.layout.PatternLayout$PatternSerializer.toSerializable(PatternLayout.java:334)
at org.apache.logging.log4j.core.layout.PatternLayout.toText(PatternLayout.java:233)
at org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:218)
at org.apache.logging.log4j.core.layout.PatternLayout.encode(PatternLayout.java:58)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.directEncodeEvent(AbstractOutputStreamAppender.java:177)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.tryAppend(AbstractOutputStreamAppender.java:170)
at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:161)
at org.apache.logging.log4j.core.appender.RollingFileAppender.append(RollingFileAppender.java:309)
at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129)
at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120)
at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84)
at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:464)
at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:448)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:431)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:406)
at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:63)
at org.apache.logging.log4j.core.Logger.logMessage(Logger.java:146)
at org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2170)
at org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2125)
at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2108)
at org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:1991)
at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1835)
at org.apache.logging.log4j.spi.AbstractLogger.warn(AbstractLogger.java:2684)
【问题讨论】：