[LOG4J2-3549] The printed thread blocked

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Information Provided
• Affects Version/s: 2.17.2
• Component/s: Log4j 1.2 bridge

Language

Java

• Assignee: Unassigned
• Reporter: yimiluo
• Created: 08/Jul/22 12:22
• Updated: 13/Sep/22 11:56
• Resolved: 13/Sep/22 11:56

Description

When we were printing the log, the printed thread was blocked, causing the service to go down. The following is the exception information:

[arthas@1]$ thread -b
"http-nio-8080-exec-5" Id=97 RUNNABLE (in native)
    at java.base@11.0.8-ga/java.io.FileOutputStream.writeBytes(Native Method)
    at java.base@11.0.8-ga/java.io.FileOutputStream.write(FileOutputStream.java:354)
    at java.base@11.0.8-ga/java.io.BufferedOutputStream.write(BufferedOutputStream.java:123)
    -  locked java.io.BufferedOutputStream@ea9396a
    at java.base@11.0.8-ga/java.io.PrintStream.write(PrintStream.java:559)
    -  locked java.io.PrintStream@3ff1e46c
    at org.apache.logging.log4j.core.util.CloseShieldOutputStream.write(CloseShieldOutputStream.java:53)
    at org.apache.logging.log4j.core.appender.OutputStreamManager.writeToDestination(OutputStreamManager.java:250)
    at org.apache.logging.log4j.core.appender.OutputStreamManager.flushBuffer(OutputStreamManager.java:283)
    -  locked org.apache.logging.log4j.core.appender.OutputStreamManager@7ba4158c <---- but blocks 236 other threads!
    at org.apache.logging.log4j.core.appender.OutputStreamManager.flush(OutputStreamManager.java:294)
    -  locked org.apache.logging.log4j.core.appender.OutputStreamManager@7ba4158c <---- but blocks 236 other threads!
    at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.directEncodeEvent(AbstractOutputStreamAppender.java:199)
    at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.tryAppend(AbstractOutputStreamAppender.java:190)
    at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:181)
    at org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:161)
    at org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:134)
    at org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:125)
    at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:89)
    at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:542)
    at org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:500)
    at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:483)
    at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:417)
    at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:82)
    at org.apache.logging.log4j.core.Logger.log(Logger.java:161)
    at org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2205)
    at org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2159)
    at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2142)
    at org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:2028)
    at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1891)
    at org.apache.logging.slf4j.Log4jLogger.info(Log4jLogger.java:194) 

 

I don't know what the solution is now. I would be very grateful if you could reply.