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Posted to log4j-dev@logging.apache.org by "Remko Popma (JIRA)" <ji...@apache.org> on 2013/07/18 00:00:49 UTC

[jira] [Assigned] (LOG4J2-311) FastFileAppender and FastRollingFileAppender not thread-safe

     [ https://issues.apache.org/jira/browse/LOG4J2-311?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Remko Popma reassigned LOG4J2-311:
----------------------------------

    Assignee: Remko Popma
    
> FastFileAppender and FastRollingFileAppender not thread-safe
> ------------------------------------------------------------
>
>                 Key: LOG4J2-311
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-311
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Appenders, Core
>    Affects Versions: 2.0-beta8
>            Reporter: Remko Popma
>            Assignee: Remko Popma
>             Fix For: 2.0-beta9
>
>
> FastFileManager#flush method needs to be synchronized.
> I'm seeing the exception below. This can only happen if two threads modify the ByteBuffer simultaneously.
> {code}
> 2013-07-17 19:00:29,033 ERROR An exception occurred processing Appender LatencyFile java.lang.IllegalArgumentException
> 	at java.nio.Buffer.position(Buffer.java:236)
> 	at java.nio.HeapByteBuffer.put(HeapByteBuffer.java:185)
> 	at org.apache.logging.log4j.core.appender.FastFileManager.write(FastFileManager.java:96)
> 	at org.apache.logging.log4j.core.appender.OutputStreamManager.write(OutputStreamManager.java:129)
> 	at org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:115)
> 	at org.apache.logging.log4j.core.appender.FastFileAppender.append(FastFileAppender.java:87)
> 	at org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:102)
> 	at org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:426)
> 	at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:407)
> 	at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:368)
> 	at org.apache.logging.log4j.core.Logger.log(Logger.java:110)
> 	at org.apache.logging.log4j.spi.AbstractLogger.info(AbstractLogger.java:1011)
> 	at ...
> {code}

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