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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-10288) Explicit reference to Log4JLogger breaks non-log4j users
Date Sat, 25 Jan 2014 19:52:37 GMT
Todd Lipcon created HADOOP-10288:
------------------------------------

             Summary: Explicit reference to Log4JLogger breaks non-log4j users
                 Key: HADOOP-10288
                 URL: https://issues.apache.org/jira/browse/HADOOP-10288
             Project: Hadoop Common
          Issue Type: Bug
          Components: util
    Affects Versions: 2.4.0
            Reporter: Todd Lipcon
            Assignee: Todd Lipcon


In HttpRequestLog, we make an explicit reference to the Log4JLogger class for an instanceof
check. If the log4j implementation isn't actually on the classpath, the instanceof check throws
NoClassDefFoundError instead of returning false. This means that dependent projects that don't
use log4j can no longer embed HttpServer -- typically this is an issue when they use MiniDFSCluster
as part of their testing.



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