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Posted to dev@kafka.apache.org by "Jay Kreps (JIRA)" <ji...@apache.org> on 2015/02/07 23:29:36 UTC

[jira] [Resolved] (KAFKA-1765) slf4j binding conflict in slf4j-log4j12 and kafka-assembly

     [ https://issues.apache.org/jira/browse/KAFKA-1765?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jay Kreps resolved KAFKA-1765.
------------------------------
    Resolution: Fixed

> slf4j binding conflict in slf4j-log4j12 and kafka-assembly
> ----------------------------------------------------------
>
>                 Key: KAFKA-1765
>                 URL: https://issues.apache.org/jira/browse/KAFKA-1765
>             Project: Kafka
>          Issue Type: Bug
>          Components: log
>    Affects Versions: 0.8.0
>         Environment: slf4j-log4j12 kafka-assembly
>            Reporter: shizhu, wang
>            Priority: Critical
>
> Before our project use slf4j which binded to log4j for logging. But after import 
> kafka-assembly.0.8.0.jar, log cannot work as expected. It just keep printing log in console now instead of log files. Looked into kafka-assembly.0.8.0.jar and find there is one SimpleLogger:
>  StringBuffer buf = new StringBuffer();
>         long millis = System.currentTimeMillis();
>         buf.append(millis - startTime);
>         buf.append(" [");
>         buf.append(Thread.currentThread().getName());
>         buf.append("] ");
>         buf.append(level);
>         buf.append(" ");
>         buf.append(name);
>         buf.append(" - ");
>         buf.append(message);
>         buf.append(LINE_SEPARATOR);
>         System.err.print(buf.toString());
>         if(t != null)
>             t.printStackTrace(System.err);
>         System.err.flush();
> but I don't want this SimpleLogger in kafka-assembly. Can you advise how can I get rid of this reference to this class(cannot remove the jar, because is necessary)



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