iyaozhen created KAFKA-3326:
-------------------------------

             Summary: Error: A JNI error has occurred, please check your 
installation and try again
                 Key: KAFKA-3326
                 URL: https://issues.apache.org/jira/browse/KAFKA-3326
             Project: Kafka
          Issue Type: Wish
          Components: config
    Affects Versions: 0.9.0.1
            Reporter: iyaozhen


I use kafka start at doc(http://kafka.apache.org/documentation.html#quickstart):

[kafka_2.11-0.9.0.1] bin/kafka-server-start.sh config/server.properties
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.NoClassDefFoundError: 
org/apache/log4j/Logger
        at java.lang.Class.getDeclaredMethods0(Native Method)
        at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
        at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
        at java.lang.Class.getMethod0(Class.java:3018)
        at java.lang.Class.getMethod(Class.java:1784)
        at 
sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544)
        at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526)
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Logger
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 7 more

java -version
java version "1.8.0_66"
Java(TM) SE Runtime Environment (build 1.8.0_66-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.66-b17, mixed mode)

echo $CLASSPATH
.:/home/work/yaozhen/jdk1.8.0_66/lib/dt.jar:/home/work/yaozhen/jdk1.8.0_66/lib/tools.jar


My JAVA is poor, I am no idea to resolve it.



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