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HDFS, mail # user - Re: Job driver and 3rd party jars


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Harsh J 2013-03-08, 00:27
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Re: Job driver and 3rd party jars
Barak Yaish 2013-03-08, 10:42
Still doesn't work. Is this works for you? Can you upload some working
example so I can verify I didn't miss something?

On Fri, Mar 8, 2013 at 9:15 AM, 刘晓文 <[EMAIL PROTECTED]> wrote:

> try:
> hadoop jar .... *-Dmapreduce.task.classpath.user.precedence=true *-libjars
> your_jar
>
>
>
> ------------------ Original ------------------
> *From: * "Barak Yaish"<[EMAIL PROTECTED]>;
> *Date: * Fri, Mar 8, 2013 03:06 PM
> *To: * "user"<[EMAIL PROTECTED]>; **
> *Subject: * Re: Job driver and 3rd party jars
>
> Yep, my typo, I'm using the later. I was also trying export
> HADOOP_CLASSPATH_USER_FIRST =true and export HADOOP_CLASSPATH=myjar before
> launching the hadoop jar, but I still getting the same exception.
> I'm running hadoop 1.0.4.
> On Mar 8, 2013 2:27 AM, "Harsh J" <[EMAIL PROTECTED]> wrote:
>
>> To be precise, did you use -libjar or -libjars? The latter is the right
>> option.
>>
>> On Fri, Mar 8, 2013 at 12:18 AM, Barak Yaish <[EMAIL PROTECTED]>
>> wrote:
>> > Hi,
>> >
>> > I'm able to run M/R jobs where the mapper and reducer required to use
>> 3rd
>> > party jars. I'm registering those jars in -libjar while invoking the
>> hadoop
>> > jar command. I'm facing a strange problem, though, when the job driver
>> > itself ( extends Configured implements Tool ) required to run such code
>> (
>> > for example notify some remote service upon start and end). Is there a
>> way
>> > to configure classpath when submitting jobs using hadoop jar? Seems like
>> > -libjar doesn't work for this case...
>> >
>> > Exception in thread "main" java.lang.NoClassDefFoundError:
>> > com/me/context/DefaultContext
>> > at java.lang.ClassLoader.defineClass1(Native Method)
>> > at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
>> > at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
>> > at
>> > java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
>> > at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
>> > at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
>> > at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
>> > at java.security.AccessController.doPrivileged(Native Method)
>> > at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
>> > at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
>> > at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
>> > at
>> > com.peer39.bigdata.mr.pnm.PnmDataCruncher.run(PnmDataCruncher.java:50)
>> > at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
>> > at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
>> > at com.me.mr.pnm.PnmMR.main(PnmDataCruncher.java:261)
>> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>> > at
>> >
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>> > at
>> >
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>> > at java.lang.reflect.Method.invoke(Method.java:597)
>> > at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
>> > Caused by: java.lang.ClassNotFoundException:
>> com.me.context.DefaultContext
>> > 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:307)
>> > at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
>>
>>
>>
>> --
>> Harsh J
>>
>