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 <CAMbwnT-fQJ0HoYt2b-hRd6-VEXRnGJX5uX0WuJLA44MMwcw3EA@mail.gmail.com>
Subject: Hadoop on Tomcat issue ??
From: praveenesh kumar <praveenesh@gmail.com>
To: user@hadoop.apache.org
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--20cf3079b7447374a304cf2767b0
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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

--20cf3079b7447374a304cf2767b0
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

Hello users,<br><br>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 l=
ogs, its saying couldn&#39;t find my Map and Reduce class, but I already ma=
de a JAR of my code and put it inside WEB-INF/lib folder. All hadoop jars a=
lso present at WEB-INF/lib folder. Can someone let me know what could be th=
e issue :<br>
<br><p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">java.lang.Runtim=
eException: Error in configuring object</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.util.ReflectionUtils.setJobCo=
nf(ReflectionUtils.java:93)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.util.ReflectionUtils.setConf(=
ReflectionUtils.java:64)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.util.ReflectionUtils.newInsta=
nce(ReflectionUtils.java:117)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.mapred.MapTask.runOldMapper(M=
apTask.java:387)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.mapred.MapTask.run(MapTask.ja=
va:325)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.mapred.Child$4.run(Child.java=
:270)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at java.security.AccessController.doPrivileged(Nat=
ive Method)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at javax.security.auth.Subject.doAs(Subject.java:3=
96)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.security.UserGroupInformation=
.doAs(UserGroupInformation.java:1157)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.mapred.Child.main(Child.java:=
264)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">Caused by: java.lang=
.reflect.InvocationTargetException</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at sun.reflect.NativeMethodAccessorImpl.invoke0(Na=
tive Method)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at sun.reflect.NativeMethodAccessorImpl.invoke(Nat=
iveMethodAccessorImpl.java:39)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at sun.reflect.DelegatingMethodAccessorImpl.invoke=
(DelegatingMethodAccessorImpl.java:25)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at java.lang.reflect.Method.invoke(Method.java:597=
)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.util.ReflectionUtils.setJobCo=
nf(ReflectionUtils.java:88)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 ... 9 more</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">Caused by:=20
java.lang.RuntimeException: java.lang.RuntimeException:=20
java.lang.ClassNotFoundException: com.ta.wh.Map</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.conf.Configuration.getClass(C=
onfiguration.java:1028)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.mapred.JobConf.getMapperClass=
(JobConf.java:968)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.mapred.MapRunner.configure(Ma=
pRunner.java:34)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 ... 14 more</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">Caused by: java.lang=
.RuntimeException: java.lang.ClassNotFoundException: com.ta.wh.Map</span></=
p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.conf.Configuration.getClass(C=
onfiguration.java:996)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.conf.Configuration.getClass(C=
onfiguration.java:1020)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 ... 16 more</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">Caused by: java.lang=
.ClassNotFoundException: com.ta.wh.Map</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at java.net.URLClassLoader$1.run(URLClassLoader.ja=
va:202)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at java.security.AccessController.doPrivileged(Nat=
ive Method)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at java.net.URLClassLoader.findClass(URLClassLoade=
r.java:190)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at java.lang.ClassLoader.loadClass(ClassLoader.jav=
a:306)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at sun.misc.Launcher$AppClassLoader.loadClass(Laun=
cher.java:301)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at java.lang.ClassLoader.loadClass(ClassLoader.jav=
a:247)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at java.lang.Class.forName0(Native Method)</span><=
/p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at java.lang.Class.forName(Class.java:247)</span><=
/p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.conf.Configuration.getClassBy=
Name(Configuration.java:943)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 at org.apache.hadoop.conf.Configuration.getClass(C=
onfiguration.java:994)</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0=A0 ... 17 more</span></p>
<p class=3D"x_MsoNormal"><span style=3D"color:#1f497d">=A0</span></p><br>

--20cf3079b7447374a304cf2767b0--