question Re: Oozie-Java Action-ClassNotFoundException in Archives of Support Questions (Read Only)

question Re: Oozie-Java Action-ClassNotFoundException in Archives of Support Questions (Read Only) https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4779#M794 <P>I didnot upload any extra xml.<BR />The xml file generated by oozie as "workflow.xml" is posted in the question under the heading "Definition"</P> Fri, 10 Jan 2014 00:03:54 GMT gkb 2014-01-10T00:03:54Z Oozie-Java Action-ClassNotFoundException https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4761#M790 <P>I am using CDH 4.4 and trying to run "HelloWorld" java action in oozie (Web UI).</P><P>I get "java.lang.ClassNotFoundException: Class HelloWorld not found".</P><P>I have uploaded the jar in the workflow`s workspace. Is there a place where i have to set the classpath?<BR />Or is there anything else that i am missing?<BR /><BR /></P><P>Configuration:</P><P>Name Value</P><TABLE><TBODY><TR><TD>hue-id-w</TD><TD>22</TD></TR><TR><TD>jobTracker</TD><TD>localhost.localdomain:8021</TD></TR><TR><TD>nameNode</TD><TD><A href="http://localhost.localdomain:8888/filebrowser/view/" target="_blank">hdfs://localhost.localdomain:8020</A></TD></TR><TR><TD>oozie.use.system.libpath</TD><TD><A href="http://localhost.localdomain:8888/filebrowser/home_relative_view/true" target="_blank">true</A></TD></TR><TR><TD>oozie.wf.application.path</TD><TD><A href="http://localhost.localdomain:8888/filebrowser/view/user/hue/oozie/workspaces/_cloudera_-oozie-22-1389296910.99" target="_blank">hdfs://localhost.localdomain:8020/user/hue/oozie/workspaces/_cloudera_-oozie-22-1389296910.99</A></TD></TR><TR><TD>user.name</TD><TD>cloudera</TD></TR></TBODY></TABLE><P> </P><P>Definition:</P><P>"<workflow-app name="WF22" xmlns="uri:oozie:workflow:0.4"><BR />    <start to="GBB12"/><BR />    <action name="GBB12"><BR />        <java><BR />            <job-tracker>${jobTracker}</job-tracker><BR />            <name-node>${nameNode}</name-node><BR />            <main-class>HelloWorld</main-class><BR />            <arg>er</arg><BR />        </java><BR />        <ok to="end"/><BR />        <error to="kill"/><BR />    </action><BR />    <kill name="kill"><BR />        <message>Action failed, error message[${wf:errorMessage(wf:lastErrorNode())}]</message><BR />    </kill><BR />    <end name="end"/><BR /></workflow-app>"</P><P> </P> Tue, 21 Apr 2026 14:02:18 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4761#M790 gkb 2026-04-21T14:02:18Z Re: Oozie-Java Action-ClassNotFoundException https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4769#M791 <P>You need to add the jar in the HDFS workspace ('Workspace' in the menu of the Editor) of the Workflow and specify its name in the 'Jar name' field of the Java action.</P><P> </P><P>Of just create a 'lib' dir in the workspace of the workflow and upload the jar there.</P><P> </P><P> </P> Thu, 09 Jan 2014 22:47:11 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4769#M791 Romainr 2014-01-09T22:47:11Z Re: Oozie-Java Action-ClassNotFoundException https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4773#M792 <P>I have uploaded the jar in the workspace which is</P><P><A href="http://localhost.localdomain:8888/filebrowser/view/user/hue/oozie/workspaces/_cloudera_-oozie-22-1389296910.99" target="_blank">hdfs://localhost.localdomain:8020/user/hue/oozie/workspaces/_cloudera_-oozie-22-1389296910.99</A></P><P> </P><P>I uploaded it while creating the java action using the UI in the name "Jar name" . Despite that i get the exception</P><P> </P><P> </P><P> </P><P> </P> Thu, 09 Jan 2014 22:58:17 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4773#M792 gkb 2014-01-09T22:58:17Z Re: Oozie-Java Action-ClassNotFoundException https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4775#M793 <P>Could you share the XML of the workflow?</P> Thu, 09 Jan 2014 23:47:28 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4775#M793 Romainr 2014-01-09T23:47:28Z Re: Oozie-Java Action-ClassNotFoundException https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4779#M794 <P>I didnot upload any extra xml.<BR />The xml file generated by oozie as "workflow.xml" is posted in the question under the heading "Definition"</P> Fri, 10 Jan 2014 00:03:54 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4779#M794 gkb 2014-01-10T00:03:54Z Re: Oozie-Java Action-ClassNotFoundException https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4783#M795 <P>Ha true.</P><P> </P><P>Could you list the content of</P><P><A href="http://localhost.localdomain:8888/filebrowser/view/user/hue/oozie/workspaces/_cloudera_-oozie-22-1389296910.99" target="_blank" rel="nofollow">hdfs://localhost.localdomain:8020/user/hue/oozie/workspaces/_cloudera_-oozie-22-1389296910.99<BR /></A></P><P>Specyfing the path in the 'Jar name' should have the file copied into a sub dir nameed lib?</P><P> </P><P><A href="http://localhost.localdomain:8888/filebrowser/view/user/hue/oozie/workspaces/_cloudera_-oozie-22-1389296910.99" target="_blank" rel="nofollow">hdfs://localhost.localdomain:8020/user/hue/oozie/workspaces/_cloudera_-oozie-22-1389296910.99/lib</A></P><P> </P><P>If not it can be done manually:</P><P> </P><P><A href="http://localhost.localdomain:8888/filebrowser/view/user/hue/oozie/workspaces/_cloudera_-oozie-22-1389296910.99" target="_blank" rel="nofollow">hdfs://localhost.localdomain:8020/user/hue/oozie/workspaces/_cloudera_-oozie-22-1389296910.99/lib/MYJAR.jar</A></P><P> </P><P>If it does not work, could you share the logs of the action? Also make sure the class is in the jar.</P> Fri, 10 Jan 2014 00:21:25 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4783#M795 Romainr 2014-01-10T00:21:25Z Re: Oozie-Java Action-ClassNotFoundException https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4785#M796 <P>Creating a "lib" folder manually in <A href="http://localhost.localdomain:8888/filebrowser/view/user/hue/oozie/workspaces/_cloudera_-oozie-22-1389296910.99" target="_blank">hdfs://localhost.localdomain:8020/user/hue/oozie/workspaces/_cloudera_-oozie-22-1389296910.99</A></P><P>and placing the jar inside the "lib" folder helped!</P><P> </P><P>Now my java action runs successfully.</P><P> </P><P>Can you please share the documentation of using the Web UI if there is one?</P><P> </P><P>Thanks!</P> Fri, 10 Jan 2014 00:49:36 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4785#M796 gkb 2014-01-10T00:49:36Z Re: Oozie-Java Action-ClassNotFoundException https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4787#M797 <P>Awesome!</P><P> </P><P>You can click on the Help icon in the naviation bar.</P><P> </P><P>Also see thr blog with video and tutorials:</P><P><A href="http://gethue.tumblr.com/" target="_blank">http://gethue.tumblr.com/</A></P><P> </P><P>Or look at the documentation of a release:</P><P><A href="http://cloudera.github.io/hue/docs-3.5.0/index.html" target="_blank">http://cloudera.github.io/hue/docs-3.5.0/index.html</A></P><P><A href="http://gethue.tumblr.com/tagged/release" target="_blank">http://gethue.tumblr.com/tagged/release</A></P><P> </P> Fri, 10 Jan 2014 01:55:07 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Oozie-Java-Action-ClassNotFoundException/m-p/4787#M797 Romainr 2014-01-10T01:55:07Z