Hi Alex.
I tried that, but unfortunately in my case it didn't work so I'm still getting
this exception:
Exception in thread "main" java.lang.NoClassDefFoundError:
org/apache/giraph/yarn/GiraphYarnTask
Caused by: java.lang.ClassNotFoundException:
org.apache.giraph.yarn.GiraphYarnTask
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: org.apache.giraph.yarn.GiraphYarnTask. Program
will exit.
In case I missed something here is what I did:
1. Copied
giraph-examples-1.1.0-SNAPSHOT-for-hadoop-2.2.0-cdh5.0.0-beta-2-jar-with-dependencies.jar
to a directory called /users/stbesk/snapshot_from_git/jars
2. Updated hadoop classpath: export
HADOOP_CLASSPATH=/users/stbesk/snapshot_from_git/jars
3. Updated command to only use
giraph-examples-1.1.0-SNAPSHOT-for-hadoop-2.2.0-cdh5.0.0-beta-2-jar-with-dependencies.jar
since it contains all dependencies:
hadoop jar
/users/stbesk/snapshot_from_git/jars/giraph-examples-1.1.0-SNAPSHOT-for-hadoop-2.2.0-cdh5.0.0-beta-2-jar-with-dependencies.jar
org.apache.giraph.GiraphRunner
org.apache.giraph.examples.SimpleShortestPathsComputation
-vif org.apache.giraph.io.formats.JsonLongDoubleFloatDoubleVertexInputFormat
-vip /user/stbesk/input/tiny-graph.txt
-vof org.apache.giraph.io.formats.IdWithValueTextOutputFormat
-op /user/stbesk/output/shortestpathsC2
-w 2
-ca giraph.SplitMasterWorker=true
-ca giraph.zkList=localhost:2181
-yj
giraph-examples-1.1.0-SNAPSHOT-for-hadoop-2.2.0-cdh5.0.0-beta-2-jar-with-dependencies.jar
Did I miss something?
Thanks.
Stefan
-----Original Message-----
From: Alexandre Fonseca [mailto:[email protected]]
Sent: Thursday, February 20, 2014 1:11 PM
To: [email protected]
Subject: Re: Problem running SimpleShortestPathsComputation on CDH5 with Hadoop
2.2.0
The yarn version of Giraph is quite finicky when it comes to detecting the
giraph jar. When it can't find the jar on the new containers you get that
exception.
After much experimentation I've had great success with the following
(substitute paths and filenames where needed):
HADOOP_CLASSPATH=/data/b.ajf/giraph hadoop jar /data/b.ajf/giraph/giraph.jar
org.apache.giraph.GiraphRunner
org.apache.giraph.examples.SimpleShortestPathsComputation -vip
/user/b.ajf/ssp_input -vif
org.apache.giraph.io.formats.JsonLongDoubleFloatDoubleVertexInputFormat -op
/user/b.ajf/ssp_output -vof
org.apache.giraph.io.formats.IdWithValueTextOutputFormat -yj giraph.jar
The argument supplied to -yj must be only the name of the jar (no directories).
The jar must be directly accessible from the current classpath or
subdirectories (but it doesn't work if you give the full path of the jar, e.g,
HADOOP_CLASSPATH=/data/b.ajf/giraph/giraph.jar).
Also, if you use giraph-examples-with-dependencies you don't need the other one
as the examples-with-dependencies already contain the core.
Cheers,
Alex
On Thursday, February 20, 2014 05:42:45 PM Stefan Beskow wrote:
> Thanks Roman for getting back to me so quickly. I checked with
> Cloudera and they have a maven repository for CDH5 (version
> 2.2.0-cdh5.0.0-beta-2) as shown below:
>
> <repository>
> <id>cloudera</id>
>
> <url>https://repository.cloudera.com/artifactory/cloudera-repos/</url>
> </repository>
>
> I added that to the pom.xml file and ran a new build using the
> following
> command:
>
> mvn -Phadoop_yarn -Dhadoop.version=2.2.0-cdh5.0.0-beta-2 clean package
> -DskipTests
>
> The program now gets further, but throws the following exception:
>
> Container: container_1392713839733_0017_01_000002 on
> el01cn04.unx.sas.com_8041
>
===========================================================================
> ===== LogType: task-2-stderr.log
> LogLength: 637
> Log Contents:
> Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/giraph/yarn/GiraphYarnTask Caused by:
> java.lang.ClassNotFoundException:
> org.apache.giraph.yarn.GiraphYarnTask at
> java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
> Could not find the main class: org.apache.giraph.yarn.GiraphYarnTask.
> Program will exit.
>
> Do you have any additional suggestions for what I should try?
>
> Thanks for your help.
> Stefan
>
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On Behalf Of
> Roman Shaposhnik Sent: Wednesday, February 19, 2014 4:43 PM
> To: [email protected]
> Subject: Re: Problem running SimpleShortestPathsComputation on CDH5
> with Hadoop 2.2.0 On Wed, Feb 19, 2014 at 1:12 PM, Stefan Beskow
> <[email protected]>
wrote:
> > Hi.
> >
> > I checked out and built Giraph for Cloudera CDH5 with Hadoop 2.2.0
> > using the
> > following:
> >
> > git clone git://git.apache.org/giraph.git snapshot_from_git cd
> > snapshot_from_git mvn -Phadoop_yarn -Dhadoop.version=2.2.0 clean
> > package -DskipTests
>
> It may help to build against CDH5 directly by:
> * manually adding repository.cloudera.com to the set of repos
> * specifying -Dhadoop.version=2.2.0-cdh5.0.0-beta-2
>
> > When I run the sample application
> > org.apache.giraph.examples.SimpleShortestPathsComputation I get the
>
> > following exception:
> You need to provide way more logs from the YARN side for us to make
> sense of it.
>
> Thanks,
> Roman.
