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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin: 10px 0 0 0; margin-top: 0">Hi</p> <p style="margin: 10px 0 0 0">I am seeing a similar issue with logback.</p> <p style="margin: 10px 0 0 0">Under heavy load my service deadlocks in the logback logger calls.</p> <p style="margin: 10px 0 0 0">A number of threads like the one below waiting for 0x00000003c0658e90</p> <p style="margin: 10px 0 0 0">"pool-6-thread-110" #155 prio=5 os_prio=0 tid=0x00007f90c80b1000 nid=0xd7 waiting on condition <span class="error">[0x00007f8fd59d8000]</span></p> <p style="margin: 10px 0 0 0"> java.lang.Thread.State: WAITING (parking)</p> <p style="margin: 10px 0 0 0"> at sun.misc.Unsafe.park(Native Method)</p> <p style="margin: 10px 0 0 0"> - parking to wait for <0x00000003c0658e90> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)</p> <p style="margin: 10px 0 0 0"> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)</p> <p style="margin: 10px 0 0 0"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)</p> <p style="margin: 10px 0 0 0"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)</p> <p style="margin: 10px 0 0 0"> at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)</p> <p style="margin: 10px 0 0 0"> at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209)</p> <p style="margin: 10px 0 0 0"> at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.core.OutputStreamAppender.writeBytes(OutputStreamAppender.java:197)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.core.OutputStreamAppender.subAppend(OutputStreamAppender.java:231)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.core.OutputStreamAppender.append(OutputStreamAppender.java:102)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.core.UnsynchronizedAppenderBase.doAppend(UnsynchronizedAppenderBase.java:84)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.core.spi.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:51)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.classic.Logger.appendLoopOnAppenders(Logger.java:270)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.classic.Logger.callAppenders(Logger.java:257)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:421)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.classic.Logger.filterAndLog_0_Or3Plus(Logger.java:383)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.classic.Logger.info(Logger.java:579)</p> <p style="margin: 10px 0 0 0"> at com.k2io.validator.repository.ValidationRepository.constructPmapWithTrail(ValidationRepository.java:555)</p> <p style="margin: 10px 0 0 0"> at com.k2io.validator.ValidationService$ValidationCallable.getAgrePmap(ValidationService.java:329)</p> <p style="margin: 10px 0 0 0"> at com.k2io.validator.ValidationService$ValidationCallable.call(ValidationService.java:167)</p> <p style="margin: 10px 0 0 0"> at com.k2io.validator.ValidationService$ValidationCallable.call(ValidationService.java:70)</p> <p style="margin: 10px 0 0 0"> at java.util.concurrent.FutureTask.run(FutureTask.java:266)</p> <p style="margin: 10px 0 0 0"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)</p> <p style="margin: 10px 0 0 0"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)</p> <p style="margin: 10px 0 0 0"> at java.lang.Thread.run(Thread.java:748)</p> <p style="margin: 10px 0 0 0"> </p> <p style="margin: 10px 0 0 0">And 0x00000003c0658e90 is held by – why is this not releasing the lock</p> <p style="margin: 10px 0 0 0">"pool-6-thread-87" #129 prio=5 os_prio=0 tid=0x00007f90d405d000 nid=0xb6 runnable <span class="error">[0x00007f8fd73f2000]</span></p> <p style="margin: 10px 0 0 0"> java.lang.Thread.State: RUNNABLE</p> <p style="margin: 10px 0 0 0"> at java.io.FileOutputStream.writeBytes(Native Method)</p> <p style="margin: 10px 0 0 0"> at java.io.FileOutputStream.write(FileOutputStream.java:326)</p> <p style="margin: 10px 0 0 0"> at java.io.BufferedOutputStream.write(BufferedOutputStream.java:122)</p> <p style="margin: 10px 0 0 0"> - locked <0x00000003c06e8890> (a java.io.BufferedOutputStream)</p> <p style="margin: 10px 0 0 0"> at java.io.PrintStream.write(PrintStream.java:480)</p> <p style="margin: 10px 0 0 0"> - locked <0x00000003c06e8870> (a java.io.PrintStream)</p> <p style="margin: 10px 0 0 0"> at java.io.FilterOutputStream.write(FilterOutputStream.java:97)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.core.joran.spi.ConsoleTarget$1.write(ConsoleTarget.java:37)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.core.OutputStreamAppender.writeBytes(OutputStreamAppender.java:199)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.core.OutputStreamAppender.subAppend(OutputStreamAppender.java:231)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.core.OutputStreamAppender.append(OutputStreamAppender.java:102)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.core.UnsynchronizedAppenderBase.doAppend(UnsynchronizedAppenderBase.java:84)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.core.spi.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:51)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.classic.Logger.appendLoopOnAppenders(Logger.java:270)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.classic.Logger.callAppenders(Logger.java:257)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:421)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.classic.Logger.filterAndLog_0_Or3Plus(Logger.java:383)</p> <p style="margin: 10px 0 0 0"> at ch.qos.logback.classic.Logger.info(Logger.java:579)</p> <p style="margin: 10px 0 0 0"> at com.k2io.validator.repository.ValidationRepository.constructPmapWithTrail(ValidationRepository.java:555)</p> <p style="margin: 10px 0 0 0"> at com.k2io.validator.ValidationService$ValidationCallable.getAgrePmap(ValidationService.java:329)</p> <p style="margin: 10px 0 0 0"> at com.k2io.validator.ValidationService$ValidationCallable.call(ValidationService.java:167)</p> <p style="margin: 10px 0 0 0"> at com.k2io.validator.ValidationService$ValidationCallable.call(ValidationService.java:70)</p> <p style="margin: 10px 0 0 0"> at java.util.concurrent.FutureTask.run(FutureTask.java:266)</p> <p style="margin: 10px 0 0 0"> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)</p> <p style="margin: 10px 0 0 0"> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)</p> <p style="margin: 10px 0 0 0"> at java.lang.Thread.run(Thread.java:748)</p> <p style="margin: 10px 0 0 0"> </p> <p style="margin: 10px 0 0 0"> Locked ownable synchronizers:</p> <p style="margin: 10px 0 0 0"> - <0x00000003c0658e90> (a java.util.concurrent.locks.ReentrantLock$NonfairSync)</p> <p style="margin: 10px 0 0 0"> - <0x00000003c11c30e8> (a java.util.concurrent.ThreadPoolExecutor$Worker)</p> <p style="margin: 10px 0 0 0"> </p> <p style="margin: 10px 0 0 0"> </p> </td>
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