Hello users,

I am trying to create a Hadoop WAR file, which will be deployed on Tomcat.
My code as a JAR is running perfectly fine. But when I am deploying as WAR
on tomcat, I am getting the following issue. From the logs, its saying
couldn't find my Map and Reduce class, but I already made a JAR of my code
and put it inside WEB-INF/lib folder. All hadoop jars also present at
WEB-INF/lib folder. Can someone let me know what could be the issue :

java.lang.RuntimeException: Error in configuring object

               at
org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93)

               at
org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64)

               at
org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117)

               at
org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:387)

               at org.apache.hadoop.mapred.MapTask.run(MapTask.java:325)

               at org.apache.hadoop.mapred.Child$4.run(Child.java:270)

               at java.security.AccessController.doPrivileged(Native Method)

               at javax.security.auth.Subject.doAs(Subject.java:396)

               at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1157)

               at org.apache.hadoop.mapred.Child.main(Child.java:264)

Caused by: java.lang.reflect.InvocationTargetException

               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.ReflectionUtils.setJobConf(ReflectionUtils.java:88)

               ... 9 more

Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
java.lang.ClassNotFoundException: com.ta.wh.Map

               at
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:1028)

               at
org.apache.hadoop.mapred.JobConf.getMapperClass(JobConf.java:968)

               at
org.apache.hadoop.mapred.MapRunner.configure(MapRunner.java:34)

               ... 14 more

Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException:
com.ta.wh.Map

               at
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:996)

               at
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:1020)

               ... 16 more

Caused by: java.lang.ClassNotFoundException: com.ta.wh.Map

               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)

               at java.lang.Class.forName0(Native Method)

               at java.lang.Class.forName(Class.java:247)

               at
org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:943)

               at
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:994)

               ... 17 more

Hello Praveenesh,

     Just make sure that everything is OK with your 'manifest' file?Does it
have all the required bundles?I am not 100% sure about this, but it could
be a reason for the failure.

Regards,
    Mohammad Tariq

On Fri, Nov 23, 2012 at 4:24 PM, praveenesh kumar <[EMAIL PROTECTED]>wrote:

> Hello users,
>
> I am trying to create a Hadoop WAR file, which will be deployed on Tomcat.
> My code as a JAR is running perfectly fine. But when I am deploying as WAR
> on tomcat, I am getting the following issue. From the logs, its saying
> couldn't find my Map and Reduce class, but I already made a JAR of my code
> and put it inside WEB-INF/lib folder. All hadoop jars also present at
> WEB-INF/lib folder. Can someone let me know what could be the issue :
>
> java.lang.RuntimeException: Error in configuring object
>
>                at
> org.apache.hadoop.util.ReflectionUtils.setJobConf(ReflectionUtils.java:93)
>
>                at
> org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:64)
>
>                at
> org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117)
>
>                at
> org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:387)
>
>                at org.apache.hadoop.mapred.MapTask.run(MapTask.java:325)
>
>                at org.apache.hadoop.mapred.Child$4.run(Child.java:270)
>
>                at java.security.AccessController.doPrivileged(Native
> Method)
>
>                at javax.security.auth.Subject.doAs(Subject.java:396)
>
>                at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1157)
>
>                at org.apache.hadoop.mapred.Child.main(Child.java:264)
>
> Caused by: java.lang.reflect.InvocationTargetException
>
>                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.ReflectionUtils.setJobConf(ReflectionUtils.java:88)
>
>                ... 9 more
>
> Caused by: java.lang.RuntimeException: java.lang.RuntimeException:
> java.lang.ClassNotFoundException: com.ta.wh.Map
>
>                at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:1028)
>
>                at
> org.apache.hadoop.mapred.JobConf.getMapperClass(JobConf.java:968)
>
>                at
> org.apache.hadoop.mapred.MapRunner.configure(MapRunner.java:34)
>
>                ... 14 more
>
> Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException:
> com.ta.wh.Map
>
>                at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:996)
>
>                at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:1020)
>
>                ... 16 more
>
> Caused by: java.lang.ClassNotFoundException: com.ta.wh.Map
>
>                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)
>
>                at java.lang.Class.forName0(Native Method)
>
>                at java.lang.Class.forName(Class.java:247)
>
>                at
> org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:943)
>
>                at
> org.apache.hadoop.conf.Configuration.getClass(Configuration.java:994)
>
>                ... 17 more
>
>
>
>