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ClassCastException in Kettle Step


ClassCastException in Kettle Step

By : Iera Athirah
Date : November 17 2020, 04:28 AM
To fix this issue Yep it's a classloader issue. This can happen when two different plugins try to load and use the same class (i.e. duplicate JARs, one in each plugin) and then try to talk to each other, or if two classes are resolving the ValueMetaGeometry class from different classloaders. The latter case can happen if the class is loaded in the parent classloader (if the JAR is in data-integration/lib, for example) and also loaded by a plugin class (if the JAR is in the plugin's lib/ folder). The plugin class will find it in the plugin's classloader, where the other consumer will find the ValueMetaGeometry class in the parent classloader.
I'd need to know more about your transformation and step(s) to help fix the problem, but one possible solution is to use PluginRegistry to get at your ValueMetaGeometry class and set your thread context classloader to ValueMetaGeometry.class.getClassLoader(). Also you may be able to use reflection to call methods on the ValueMetaGeometry objects.
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Kettle 'XML Output' step changing / to /

Kettle 'XML Output' step changing / to /


By : tono OptionalExit
Date : March 29 2020, 07:55 AM
To fix this issue i know this behaviour, i solved using the "output to file" step instead "output to xml" step. Before this step add a a new step called new xml, and output the xml row to the "final output to file" step. This should works.
Kettle '?' not working Table Input Step

Kettle '?' not working Table Input Step


By : propertor
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , To solve your situation, i prefer to work with jobs, please find {kettle_intalation_folder_path}/examples/jobs/process all tables/Process all tables.kjb, because your case is a simplification of that example.
PDI (Kettle) looped job step parellelization

PDI (Kettle) looped job step parellelization


By : eselis
Date : March 29 2020, 07:55 AM
like below fixes the issue After a lot of trial-and-error and a LOT of research, I've discovered the following:
Process multiple inputs to a Kettle step

Process multiple inputs to a Kettle step


By : user2965120
Date : March 29 2020, 07:55 AM
Any of those help I seem to have found a solution. I wrote a small "how-to" on it here: http://abhis.ws/display/KKB/Kettle+transformation+step+with+multiple+input+streams and the code is on GitHub: https://github.com/adeydas/KettleMultipleStreams.
XML Join Step in Pentaho Kettle is very low in Performance

XML Join Step in Pentaho Kettle is very low in Performance


By : KRL
Date : March 29 2020, 07:55 AM
wish help you to fix your issue yes, using the xml join step its really slow performance, i removed all this steps and replaced by script step, is e4x ecmascript (which is included in pentaho kettle, is rhino javascript engine and specially conceived to work with xml)
for instance, you can use the var foo = new XML(); not included in other js engines
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