David Kadleček created LOG4NET-618:
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Summary: File appender stucks in the native method
FileOutputStream.write
Key: LOG4NET-618
URL: https://issues.apache.org/jira/browse/LOG4NET-618
Project: Log4net
Issue Type: Bug
Components: Core
Reporter: David Kadleček
Version: 2.10.0 (Jira says Version with id ' 2.10.0' does not exist.)
In one of our production environments, the Thread which asynchronously
processes log events ( Log4j2-TF-1-AsyncLogger) sometimes freezes in the
native method FileOutputStream.write. The AsyncLogger is using
RollingFileAppender, which is using old blocking IO access. Since we are unable
to reproduce it anywhere else, we assume it's connected to this particular
virtual environment setup.
However, we would like to try NIO file appender. Unfortunately, I wasn't lucky
to find any. Does any NIO file appender exists? Maybe unofficial? Is it
planned to rewrite File appenders to use NIO approach when dealing with files?
Bellow is a stacktrace of the async thread. It stays in the native method
FileOutputStream.write forever but no new byte is written into the log folder.
"Log4j2-TF-1-AsyncLogger[AsyncContext@77556fd]-1" #18 daemon prio=5 os_prio=0
cpu=468.75ms elapsed=594.01s tid=0x000001c3a17b9000 nid=0x34a0 at breakpoint
[0x0000008fefdfe000]
java.lang.Thread.State: RUNNABLE
at
java.io.FileOutputStream.write([email protected]/FileOutputStream.java:354)
at
org.apache.logging.log4j.core.appender.OutputStreamManager.writeToDestination(OutputStreamManager.java:262)
- locked <0x000000070317f580> (a
org.apache.logging.log4j.core.appender.rolling.RollingFileManager)
at
org.apache.logging.log4j.core.appender.FileManager.writeToDestination(FileManager.java:261)
- locked <0x000000070317f580> (a
org.apache.logging.log4j.core.appender.rolling.RollingFileManager)
at
org.apache.logging.log4j.core.appender.rolling.RollingFileManager.writeToDestination(RollingFileManager.java:219)
- locked <0x000000070317f580> (a
org.apache.logging.log4j.core.appender.rolling.RollingFileManager)
at
org.apache.logging.log4j.core.appender.OutputStreamManager.flushBuffer(OutputStreamManager.java:294)
- locked <0x000000070317f580> (a
org.apache.logging.log4j.core.appender.rolling.RollingFileManager)
at
org.apache.logging.log4j.core.appender.OutputStreamManager.flush(OutputStreamManager.java:303)
- locked <0x000000070317f580> (a
org.apache.logging.log4j.core.appender.rolling.RollingFileManager)
at
org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.directEncodeEvent(AbstractOutputStreamAppender.java:179)
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:308)
at cz.sw.upis.logging.UpisAppender.append(UpisAppender.java:27)
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:448)
at
org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:433)
at
org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:417)
at
org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:79)
at
org.apache.logging.log4j.core.async.AsyncLogger.actualAsyncLog(AsyncLogger.java:380)
at
org.apache.logging.log4j.core.async.RingBufferLogEvent.execute(RingBufferLogEvent.java:152)
at
org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:45)
at
org.apache.logging.log4j.core.async.RingBufferLogEventHandler.onEvent(RingBufferLogEventHandler.java:29)
at
com.lmax.disruptor.BatchEventProcessor.run(BatchEventProcessor.java:129)
at java.lang.Thread.run([email protected]/Thread.java:834)
Locked ownable synchronizers:
- None
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