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Thread: Errors when trying to run transformation containing ArffOutput plug-in

  1. 07-31-2012, 08:40 PM #1
    archi
    archi is offline Junior Member
    Join Date
    Jul 2012
    Posts
    17

    Default Errors when trying to run transformation containing ArffOutput plug-in

    I'm able to see the plug-in in Spoon but when trying to run on Kitchen I get this error. I tried every obvious fix (copying plug-in files to libext, to parent folder, etc) but no luck.

    ERROR 31-07 19:34:21,412 - Job1 - org.pentaho.di.core.exception.KettleException:

    Code:
    Unexpected error during transformation metadata load

Error reading object from XML file

Unable to load step info from XML step nodeorg.pentaho.di.core.exception.KettleS
tepLoaderException:
Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.


Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.




        at org.pentaho.di.job.entries.trans.JobEntryTrans.getTransMeta(JobEntryT
rans.java:1202)
        at org.pentaho.di.job.entries.trans.JobEntryTrans.execute(JobEntryTrans.
java:621)
        at org.pentaho.di.job.Job.execute(Job.java:528)
        at org.pentaho.di.job.Job.execute(Job.java:667)
        at org.pentaho.di.job.Job.execute(Job.java:667)
        at org.pentaho.di.job.Job.execute(Job.java:393)
        at org.pentaho.di.job.Job.run(Job.java:313)
Caused by: org.pentaho.di.core.exception.KettleXMLException:
Error reading object from XML file

Unable to load step info from XML step nodeorg.pentaho.di.core.exception.KettleS
tepLoaderException:
Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.


Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.



        at org.pentaho.di.trans.TransMeta.loadXML(TransMeta.java:2880)
        at org.pentaho.di.trans.TransMeta.<init>(TransMeta.java:2376)
        at org.pentaho.di.trans.TransMeta.<init>(TransMeta.java:2337)
        at org.pentaho.di.job.entries.trans.JobEntryTrans.getTransMeta(JobEntryT
rans.java:1158)
        ... 6 more
Caused by: org.pentaho.di.core.exception.KettleXMLException:
Unable to load step info from XML step nodeorg.pentaho.di.core.exception.KettleS
tepLoaderException:
Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.


Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.


        at org.pentaho.di.trans.step.StepMeta.<init>(StepMeta.java:308)
        at org.pentaho.di.trans.TransMeta.loadXML(TransMeta.java:2532)
        ... 9 more
Caused by: org.pentaho.di.core.exception.KettleStepLoaderException:
Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.

        at org.pentaho.di.trans.step.StepMeta.<init>(StepMeta.java:250)
        ... 10 more

ERROR 31-07 19:34:21,630 - Job1 - org.pentaho.di.core.exception.KettleException:

Unexpected error occurred while launching entry [Transformation1.0]

Unexpected error during transformation metadata load

Error reading object from XML file

Unable to load step info from XML step nodeorg.pentaho.di.core.exception.KettleS
tepLoaderException:
Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.


Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.





        at org.pentaho.di.job.Job.execute(Job.java:672)
        at org.pentaho.di.job.Job.execute(Job.java:667)
        at org.pentaho.di.job.Job.execute(Job.java:393)
        at org.pentaho.di.job.Job.run(Job.java:313)
Caused by: org.pentaho.di.core.exception.KettleException:
Unexpected error during transformation metadata load

Error reading object from XML file

Unable to load step info from XML step nodeorg.pentaho.di.core.exception.KettleS
tepLoaderException:
Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.


Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.




        at org.pentaho.di.job.entries.trans.JobEntryTrans.getTransMeta(JobEntryT
rans.java:1202)
        at org.pentaho.di.job.entries.trans.JobEntryTrans.execute(JobEntryTrans.
java:621)
        at org.pentaho.di.job.Job.execute(Job.java:528)
        at org.pentaho.di.job.Job.execute(Job.java:667)
        ... 3 more
Caused by: org.pentaho.di.core.exception.KettleXMLException:
Error reading object from XML file

Unable to load step info from XML step nodeorg.pentaho.di.core.exception.KettleS
tepLoaderException:
Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.


Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.



        at org.pentaho.di.trans.TransMeta.loadXML(TransMeta.java:2880)
        at org.pentaho.di.trans.TransMeta.<init>(TransMeta.java:2376)
        at org.pentaho.di.trans.TransMeta.<init>(TransMeta.java:2337)
        at org.pentaho.di.job.entries.trans.JobEntryTrans.getTransMeta(JobEntryT
rans.java:1158)
        ... 6 more
Caused by: org.pentaho.di.core.exception.KettleXMLException:
Unable to load step info from XML step nodeorg.pentaho.di.core.exception.KettleS
tepLoaderException:
Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.


Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.


        at org.pentaho.di.trans.step.StepMeta.<init>(StepMeta.java:308)
        at org.pentaho.di.trans.TransMeta.loadXML(TransMeta.java:2532)
        ... 9 more
Caused by: org.pentaho.di.core.exception.KettleStepLoaderException:
Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.

        at org.pentaho.di.trans.step.StepMeta.<init>(StepMeta.java:250)
        ... 10 more

ERROR 31-07 19:34:21,896 - Job1 - A serious error occurred during job execution:
 org.pentaho.di.core.exception.KettleException:
Unexpected error occurred while launching entry [GetArgs.0]

Unexpected error occurred while launching entry [Transformation1.0]

Unexpected error during transformation metadata load

Error reading object from XML file

Unable to load step info from XML step nodeorg.pentaho.di.core.exception.KettleS
tepLoaderException:
Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.


Unable to load class for step/plugin with id [ArffOutput]. Check if the plugin i
s available in the plugins subdirectory of the Kettle distribution.






INFO  31-07 19:34:21,974 - Kitchen - Finished!
ERROR 31-07 19:34:21,974 - Kitchen - Finished with errors
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  2. 08-01-2012, 04:06 AM #2
    Mark
    Mark is offline Pentaho WEKA Architect
    Join Date
    Aug 2006
    Posts
    1,063

    Default

    Hmm, this seems to work OK for me. Do you have the following files in a subdirectory of plugins/steps in your Kettle installation?

    AO.png
    arffoutput.jar
    plugin.xml
    weka.jar

    The ArffOutput plugin will work with either Weka 3.6.x or 3.7.x.

    Cheers,
    Mark.
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  3. 08-01-2012, 10:14 PM #3
    archi
    archi is offline Junior Member
    Join Date
    Jul 2012
    Posts
    17

    Default

    Quote Originally Posted by Mark View Post
    Hmm, this seems to work OK for me. Do you have the following files in a subdirectory of plugins/steps in your Kettle installation?

    AO.png
    arffoutput.jar
    plugin.xml
    weka.jar

    The ArffOutput plugin will work with either Weka 3.6.x or 3.7.x.

    Cheers,
    Mark.
    Yes I have all 4 files sitting in ...\pdi-ce-4.3.0-stable\data-integration\plugins\steps\Arff

    Code:
    C:\usr\pdi-ce-4.3.0-stable\data-integration\plugins\steps\Arff>dir
 Volume in drive C has no label.
 Volume Serial Number is 80FA-FAB7

 Directory of C:\usr\pdi-ce-4.3.0-stable\data-integration\plugins\steps\Arff

07/31/2012  07:26 PM    <DIR>          .
07/31/2012  07:26 PM    <DIR>          ..
08/11/2010  03:26 PM             1,430 AO.png
08/11/2010  03:26 PM            34,455 arffoutput.jar
08/11/2010  03:26 PM               758 plugin.xml
05/06/2012  10:13 PM         6,470,687 weka.jar
               4 File(s)      6,507,330 bytes
               2 Dir(s)   2,909,446,144 bytes free
    My WEKA version is 3.6.

    BTW now I just noticed it works fine in Spoon. It only fails in Kitchen.
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