我在我们的应用程序中使用 Async log4j2 而不是 slf4j，我确信这是非阻塞的。但是在集成了BlockHound之后，我得到了一个惊喜：
java.lang.Exception: [worker-1-8] Blocking call: sun.misc.Unsafe#park
at reactor.blockhound.BlockHound$Builder.lambda$install$6(BlockHound.java:318)
at reactor.blockhound.BlockHoundRuntime.checkBlocking(BlockHoundRuntime.java:46)
at sun.misc.Unsafe.park(Unsafe.java)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(AbstractQueuedSynchronizer.java:870)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquire(AbstractQueuedSynchronizer.java:1199)
at java.util.concurrent.locks.ReentrantLock$NonfairSync.lock(ReentrantLock.java:209)
at java.util.concurrent.locks.ReentrantLock.lock(ReentrantLock.java:285)
at com.lmax.disruptor.TimeoutBlockingWaitStrategy.signalAllWhenBlocking(TimeoutBlockingWaitStrategy.java:62)
at com.lmax.disruptor.MultiProducerSequencer.publish(MultiProducerSequencer.java:218)
at com.lmax.disruptor.RingBuffer.translateAndPublish(RingBuffer.java:990)
at com.lmax.disruptor.RingBuffer.tryPublishEvent(RingBuffer.java:538)
at org.apache.logging.log4j.core.async.AsyncLoggerConfigDisruptor.tryEnqueue(AsyncLoggerConfigDisruptor.java:392)
at org.apache.logging.log4j.core.async.AsyncLoggerConfig.logToAsyncDelegate(AsyncLoggerConfig.java:135)
at org.apache.logging.log4j.core.async.AsyncLoggerConfig.log(AsyncLoggerConfig.java:116)
at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:460)
at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:82)
at org.apache.logging.log4j.core.Logger.log(Logger.java:162)
at org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2190)
at org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2144)
at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2127)
at org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:2020)
at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1891)
at org.apache.logging.slf4j.Log4jLogger.info(Log4jLogger.java:184)
这是预期的行为还是我错过了什么？
Log4j2 的异步日志记录只是通过中断器(一种环形缓冲区)将 I/O 部分交给单独的线程。生产者使用Java的内置notify()向消费者发出信号，后者必须获取一个锁。