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via hadoop-general by Owen O'Malley, 1 year ago
> > > > i got a same error.. > > i will try build a servlet and run on tomcat... > > i try many issues to config a classpath... all fail.. > > > > thanks > > > > > > On Mon, Jan 24, 2011 at 12:54 PM, Harsh J <qwertymaniac@gmail.com> > wrote: > > > >> The
via hadoop-general by Alessandro Binhara, 7 months ago
> org/apache/hadoop/conf/Configuration
via hadoop-general by Alessandro Binhara, 7 months ago
org/apache/hadoop/conf/Configuration
via hadoop-general by Harsh J, 7 months ago
org/apache/hadoop/conf/Configuration
java.lang.NoClassDefFoundError: Could not initialize class
> org.apache.hadoop.conf.Configuration
>         HadoopWriterLib.HadoopWriter.OpenFileSystem(HadoopWriter.java:22)
>        HadoopWriterLib.HadoopWriter.<init>(HadoopWriter.java:16)
>        HadoopServletTest.doGet(HadoopServletTest.java:35)
>        javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
>        javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
>
> *note* *The full stack trace of the root cause is available in the Apache
> Tomcat/7.0.6 logs.*
>
> The error can be a problem on my ubuntu server ?
>
> thanks
>
> On Mon, Jan 24, 2011 at 1:01 PM, Alessandro Binhara <binhara@gmail.com
> >wrote:
>
> > ..i try
> >  java -classpath hadoop-core-0.20.1.jar -jar HahoopHdfsHello.jar
> >
> > i got a same error..
> > i will try build a servlet and run on tomcat...
> > i try many issues to config a classpath... all fail..
> >
> > thanks
> >
> >
> > On Mon, Jan 24, 2011 at 12:54 PM, Harsh J <qwertymaniac@gmail.com>
> wrote:
> >
> >> The issue would definitely lie with your CLASSPATH.
> >>
> >> Ideally, while beginning development using Hadoop 0.20, it is better
> >> to use the `hadoop jar` command to launch jars of any kind that
> >> require Hadoop libraries; be it MapReduce or not. The command will
> >> ensure that all the classpath requirements for Hadoop-side libraries
> >> are satisfied, so you don't have to worry.
> >>
> >> Anyhow, try launching it this way:
> >> $ java -classpath hadoop-0.20.2-core.jar -jar HadoopHdfsHello.jar; #
> >> This should run just fine.
> >>
> >> On Mon, Jan 24, 2011 at 5:06 PM, Alessandro Binhara <binhara@gmail.com>
> >> wrote:
 Hello ..
 i solve problem in jar..
 i put a hadoop-core-0.20.2.jar   in same jar dir.
 i configure a class path
 export CLASSPATH=.:$JAVA_HOME
 i got this erro in shell
 root:~# java -jar HahoopHdfsHello.jar
 Exception in thread "main" java.lang.NoClassDefFoundError:
 org/apache/hadoop/conf/Configuration	at undefined.HadooHdfsHello.main(HadooHdfsHello.java:18)