Hey Lars,
You mean copying all required jar files to the lib/ folder in each jar?
Is it worth the redundancy? I'll check if it works if I do that. Currently,
I am using ant to build my jar file with these instructions to include
files:
<path id="classpath">
<fileset dir="${lib.dir}" includes="**/*.jar"/>
<fileset dir="${env.HADOOP_HOME}" includes="*.jar"/>
<fileset dir="${env.HBASE_HOME}" includes="*.jar"/>
<fileset dir="${env.HADOOP_HOME}/lib" includes="**/*.jar"/>
<fileset dir="${env.HBASE_HOME}/lib" includes="**/*.jar"/>
</path>
<target name="compile" depends="clean">
<mkdir dir="${build.dir}"/>
<javac srcdir="${src.dir}" destdir="${build.dir}"
classpathref="classpath"/>
<copy todir="${build.dir}">
<fileset dir="${input.dir}" includes="*.*"/>
</copy>
</target>
I'll try copying all jars into the lib and including only the lib folder
now.
thanks,
hari
On Sun, Nov 21, 2010 at 5:32 PM, Lars George <[email protected]> wrote:
> Hi Hari,
>
> I would try the "fat" jar approach. It is much easier to maintain as
> each job jar contains its required dependencies. Adding it to the
> nodes and config is becoming a maintenance nightmare very quickly. I
> am personally using Maven to build my job jars and the Maven "Package"
> plugin that has a custom package descriptor which - upon building the
> project - wraps everything up for me in one fell swoop.
>
> Lars
>
> On Sun, Nov 21, 2010 at 8:17 AM, Hari Sreekumar
> <[email protected]> wrote:
> > Hi Lars,
> >
> > I tried copying conf to all nodes and copying jar, it is still
> > giving the same error. Weird thing is that tasks on the master node are
> also
> > failing with the same error, even though all my files are available on
> > master. I am sure I'm missing something basic here, but unable to
> pinpoint
> > the exact problem.
> >
> > hari
> >
> > On Sun, Nov 21, 2010 at 3:11 AM, Lars George <[email protected]>
> wrote:
> >
> >> Hi Hari,
> >>
> >> This is most certainly a classpath issue. You either have to add the jar
> to
> >> all TaskTracker servers and add it into the hadoop-env.sh in the
> >> HADOOP_CLASSPATH line (and copy it to all servers again *and* restart
> the
> >> TaskTracker process!) or put the jar into the job jar into a /lib
> directory.
> >>
> >> Lars
> >>
> >> On Nov 20, 2010, at 22:33, Hari Sreekumar <[email protected]>
> >> wrote:
> >>
> >> > Hi,
> >> >
> >> > I am getting this exception while running m/r jobs on HBase:
> >> >
> >> > 10/11/21 02:53:01 INFO input.FileInputFormat: Total input paths to
> >> process :
> >> > 1
> >> > 10/11/21 02:53:01 INFO mapred.JobClient: Running job:
> >> job_201011210240_0002
> >> > 10/11/21 02:53:02 INFO mapred.JobClient: map 0% reduce 0%
> >> > 10/11/21 02:53:08 INFO mapred.JobClient: Task Id :
> >> > attempt_201011210240_0002_m_000036_0, Status : FAILED
> >> > java.lang.RuntimeException: java.lang.ClassNotFoundException:
> >> > org.apache.hadoop.hbase.mapreduce.TableOutputFormat
> >> > at
> >> > org.apache.hadoop.conf.Configuration.getClass(Configuration.java:809)
> >> > at
> >> >
> >>
> org.apache.hadoop.mapreduce.JobContext.getOutputFormatClass(JobContext.java:193)
> >> > at org.apache.hadoop.mapred.Task.initialize(Task.java:413)
> >> > at org.apache.hadoop.mapred.MapTask.run(MapTask.java:288)
> >> > at org.apache.hadoop.mapred.Child.main(Child.java:170)
> >> > Caused by: java.lang.ClassNotFoundException:
> >> > org.apache.hadoop.hbase.mapreduce.TableOutputFormat
> >> > at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
> >> > at java.security.AccessController.doPrivileged(Native Method)
> >> > at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
> >> > at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> >> > at
> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
> >> > at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
> >> > at java.lang.Class.forName0(Native Method)
> >> > at java.lang.Class.forName(Class.java:247)
> >> > at
> >> >
> >>
> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:762)
> >> > at
> >> > org.apache.hadoop.conf.Configuration.getClass(Configuration.java:807)
> >> > ... 4 more
> >> >
> >> > What could be the probable reasons for this? I have made sure that
> >> > hbase-0.20.6.jar, which contains this particular class, is included in
> >> the
> >> > class path. In fact, if I run non-m/r jobs, it works fine. e.g, I ran
> a
> >> jar
> >> > file successfully that uses HAdmin to create some tables. Here is a
> part
> >> of
> >> > the output from these jobs:
> >> >
> >> > 10/11/21 02:49:24 INFO zookeeper.ZooKeeper: Client
> >> > environment:java.vendor=Sun Microsystems Inc.
> >> > 10/11/21 02:49:24 INFO zookeeper.ZooKeeper: Client
> >> > environment:java.home=/usr/java/jdk1.6.0_22/jre
> >> > 10/11/21 02:49:24 INFO zookeeper.ZooKeeper: Client
> >> >
> >>
> environment:java.class.path=/opt/hadoop/bin/../conf:/usr/java/jdk1.6.0_22/lib/tools.jar:/opt/hadoop/bin/..
> >> >
> >>
> :/opt/hadoop/bin/../hadoop-0.20.2-core.jar:/opt/hadoop/bin/../lib/commons-cli-1.2.jar:/opt/hadoop/bin/../lib/commons-codec-1.3.jar:/opt/hadoop/bin/../lib/com
> >> >
> >>
> mons-el-1.0.jar:/opt/hadoop/bin/../lib/commons-httpclient-3.0.1.jar:/opt/hadoop/bin/../lib/commons-logging-1.0.4.jar:/opt/hadoop/bin/../lib/commons-logging-a
> >> >
> >>
> pi-1.0.4.jar:/opt/hadoop/bin/../lib/commons-net-1.4.1.jar:/opt/hadoop/bin/../lib/core-3.1.1.jar:/opt/hadoop/bin/../lib/hsqldb-1.8.0.10.jar:/opt/hadoop/bin/..
> >> >
> >>
> /lib/jasper-compiler-5.5.12.jar:/opt/hadoop/bin/../lib/jasper-runtime-5.5.12.jar:/opt/hadoop/bin/../lib/jets3t-0.6.1.jar:/opt/hadoop/bin/../lib/jetty-6.1.14.
> >> >
> >>
> jar:/opt/hadoop/bin/../lib/jetty-util-6.1.14.jar:/opt/hadoop/bin/../lib/junit-3.8.1.jar:/opt/hadoop/bin/../lib/kfs-0.2.2.jar:/opt/hadoop/bin/../lib/log4j-1.2.15.jar:/opt/hadoop/bin/../lib/mockito-all-1.8.0.jar:/opt/hadoop/bin/../lib/oro-2.0.8.jar:/opt/hadoop/bin/../lib/servlet-api-2.5-6.1.14.jar:/opt/hadoop/bin/../lib/slf4j-api-1.4.3.jar:/opt/hadoop/bin/../lib/slf4j-log4j12-1.4.3.jar:/opt/hadoop/bin/../lib/xmlenc-0.52.jar:/opt/hadoop/bin/../lib/jsp-2.1/jsp-2.1.jar:/opt/hadoop/bin/../lib/jsp-2.1/jsp-api-2.1.jar:/opt/hbase/hbase-0.20.6.jar:/opt/hbase/hbase-0.20.6-test.jar:/opt/hbase/conf:/opt/hbase/lib/zookeeper-3.2.2.jar
> >> > 10/11/21 02:49:24 INFO zookeeper.ZooKeeper: Client
> >> >
> >>
> environment:java.library.path=/opt/hadoop/bin/../lib/native/Linux-amd64-64
> >> > 10/11/21 02:49:24 INFO zookeeper.ZooKeeper: Client
> >> > environment:java.io.tmpdir=/tmp
> >> > 10/11/21 02:49:24 INFO zookeeper.ZooKeeper: Client
> >> > environment:java.compiler=<NA>
> >> >
> >> > As you can see, /opt/hbase/hbase-0.20.6.jar is included in the
> classpath.
> >> > What else could be it?
> >> >
> >> > thanks,
> >> > hari
> >>
> >
>
