EAP 6 deadlocks on a logging RollingFileAppenders and java.io.PrintStream

Solution Unverified - Updated -

Issue

  • A deadlock between multiple RollingFileAppenders:
"Thread-2158" daemon prio=10 tid=0x00007ffb80077000 nid=0x7f61 waiting for monitor entry [0x00007ffbaae86000]
   java.lang.Thread.State: BLOCKED (on object monitor)
    at java.io.PrintStream.println(PrintStream.java:806)
    - waiting to lock <0x000000074ac95720> (a java.io.PrintStream)
    at org.jboss.stdio.StdioContext$DelegatingPrintStream.println(StdioContext.java:474)
    at org.apache.log4j.helpers.LogLog.debug(LogLog.java:100)
    at org.apache.log4j.RollingFileAppender.rollOver(RollingFileAppender.java:153)
    at org.apache.log4j.RollingFileAppender.subAppend(RollingFileAppender.java:280)
    at org.apache.log4j.WriterAppender.append(WriterAppender.java:162)
    at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)
    - locked <0x000000074c79a260> (a org.apache.log4j.RollingFileAppender)
    at org.apache.log4j.JBossAppenderHandler.doPublish(JBossAppenderHandler.java:34)
    at org.jboss.logmanager.ExtHandler.publish(ExtHandler.java:76)
    at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:302)
    at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:310)
    at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:310)
    at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:310)
    at org.jboss.logmanager.Logger.logRaw(Logger.java:719)
    at org.apache.log4j.Category.callAppenders(Category.java:69)
    at org.apache.log4j.Category.forcedLog(Category.java:121)
    at org.apache.log4j.Category.info(Category.java:241)
    at org.rak.logger.service.impl.XMLMaskingLog4jServiceImpl$1.run(XMLMaskingLog4jServiceImpl.java:126)
    at java.lang.Thread.run(Thread.java:745)
   Locked ownable synchronizers:
    - None

"http-127.0.0.1:38443-5" daemon prio=10 tid=0x00007ffb8c019000 nid=0x6e40 waiting for monitor entry [0x00007ffba8a05000]
   java.lang.Thread.State: BLOCKED (on object monitor)
    at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:231)
    - waiting to lock <0x000000074c79a260> (a org.apache.log4j.RollingFileAppender)
    at org.apache.log4j.JBossAppenderHandler.doPublish(JBossAppenderHandler.java:34)
    at org.jboss.logmanager.ExtHandler.publish(ExtHandler.java:76)
    at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:302)
    at org.jboss.logmanager.LoggerNode.publish(LoggerNode.java:310)
    at org.jboss.logmanager.Logger.logRaw(Logger.java:719)
    at org.jboss.logmanager.Logger.log(Logger.java:504)
    at org.jboss.stdio.AbstractLoggingWriter.write(AbstractLoggingWriter.java:71)
    - locked <0x000000074ac95788> (a java.lang.StringBuilder)
    at org.jboss.stdio.WriterOutputStream.finish(WriterOutputStream.java:143)
    at org.jboss.stdio.WriterOutputStream.flush(WriterOutputStream.java:164)
    - locked <0x000000074ac95840> (a sun.nio.cs.UTF_8$Decoder)
    at java.io.PrintStream.write(PrintStream.java:482)
    - locked <0x000000074ac95720> (a java.io.PrintStream)
    at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)
    at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291)
    at sun.nio.cs.StreamEncoder.flushBuffer(StreamEncoder.java:104)
    - locked <0x000000074ac95c18> (a java.io.OutputStreamWriter)
    at java.io.OutputStreamWriter.flushBuffer(OutputStreamWriter.java:185)
    at java.io.PrintStream.newLine(PrintStream.java:546)
    - locked <0x000000074ac95720> (a java.io.PrintStream)
    at java.io.PrintStream.println(PrintStream.java:807)
    - locked <0x000000074ac95720> (a java.io.PrintStream)
    at org.jboss.stdio.StdioContext$DelegatingPrintStream.println(StdioContext.java:474)
...

Environment

  • JBoss Enterprise Application Platform (EAP) 6.x

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