Getting class not found for org.json.simple.parser.ParseException even through dependecy is there in pom.xml?

Question

Here is my pom.xml

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>

<dependency>
   <groupId>org.apache.hadoop</groupId>
   <artifactId>hadoop-core</artifactId>
   <version>1.2.0</version>
   <scope>provided</scope>
</dependency>

<dependency>
    <groupId>com.googlecode.json-simple</groupId>
    <artifactId>json-simple</artifactId>
    <version>1.1.1</version>
</dependency>
  </dependencies>

I have added the com.googlecode.json-simple as a dependency in the project, and it is working fine in eclipse build wise, but when I run the jar in hadoop I get

Error: java.lang.ClassNotFoundException: org.json.simple.parser.ParseException
        at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:270)
        at org.apache.hadoop.conf.Configuration.getClassByNameOrNull(Configuration.java:2134)
        at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2099)
        at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:2193)
        at org.apache.hadoop.mapreduce.task.JobContextImpl.getMapperClass(JobContextImpl.java:186)
        at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:745)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
        at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
        at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)

Any ideas?

this might help http://stackoverflow.com/questions/4262186/missing-maven-dependencies-in-eclipse-project — Akash Rajbanshi, Apr 01 '16 at 05:03

Raghu K Nair · Answer 1 · 2016-04-01T05:07:15.810

0

I think the issue could be because of the scope .

Please try to change the scope to "compile" or "test" . I think you are using it for testing.

<dependency>
    <groupId>com.googlecode.json-simple</groupId>
    <artifactId>json-simple</artifactId>
    <version>1.1</version>
    <scope>provided</scope>
</dependency>

edited Apr 01 '16 at 05:07

answered Apr 01 '16 at 04:58

Raghu K Nair

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I am not very proficient with maven. Can you tell me where to set it? – Max Apr 01 '16 at 04:59
or compile may be that should help. – Raghu K Nair Apr 01 '16 at 05:01
with scope=test, it does not compile in eclipse? – Max Apr 01 '16 at 05:03
You mean test did you try compile for com.googlecode.json-simple – Raghu K Nair Apr 01 '16 at 05:04
yes for test it does not compile, for compile, it compliles but gives me classNotFound? – Max Apr 01 '16 at 05:05
last try you could make provided – Raghu K Nair Apr 01 '16 at 05:07
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/107917/discussion-between-raghu-k-nair-and-dude). – Raghu K Nair Apr 01 '16 at 05:08

Getting class not found for org.json.simple.parser.ParseException even through dependecy is there in pom.xml?

1 Answers1