Details
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Type:
Bug
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Status: Resolved
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Priority:
Major
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Resolution: Not A Bug
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Affects Version/s: CDH4.3.0
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Fix Version/s: None
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Component/s: MapReduce
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Labels:
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Environment:Cygwin/Windows 2003/CDH4.3
Description
Hi, I have installed CDH4.3 tarballs under Cygwin on a Windows 2003 server. I am able to start namenode, datanode and secondarynamenode using the hdfs command.
However I received "java.lang.NoClassDefFoundError: org/apache/hadoop/mapred/JobTracker" error when I tried to start jobtracker using the start-mapred.sh script. Can you provide a hint what I have missed? I am running the script under the bin-mapreduce1 folder. Is it the correct location to run this script?
$ ./bin-mapreduce1/start-mapred.sh
starting jobtracker, logging to D:/cygwin/home/sa-qing.sun/hadoop-2.0.0-cdh4.3.0/share/hadoop/mapreduce1/logs/hadoop-sa-qing.sun-jobtracker-localhost.out
java.lang.NoClassDefFoundError: org/apache/hadoop/mapred/JobTracker
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.mapred.JobTracker
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:305)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:246)
Could not find the main class: org.apache.hadoop.mapred.JobTracker. Program will exit.