Can't write AverageBuilder result from command line?

Legacy User

I can use IOObjectWriter and ResultWriter to write the results of an AverageBuilder to a file when I run the setup from the GUI. But when I run it from the command line, it fails with:

G Apr 28, 2009 10:24:09 AM: [Fatal] NullPointerException occured in 1st application of IOObjectWriter (IOObjectWriter)
G Apr 28, 2009 10:24:09 AM: [Fatal] Process failed: operator cannot be executed. Check the log messages...

The rest of the file works fine; just the IOObjectWriter or ResultWriter fails.

How do you write the results of an AverageBuilder to a file from the command line?

Here's the XML of the operators:

      <operator name="AverageBuilder" class="AverageBuilder">
      </operator>
      <operator name="IOObjectWriter" class="IOObjectWriter">
          <parameter key="object_file"	value="training_perf_%{t}.txt"/>
          <parameter key="io_object"	value="AverageVector"/>
          <parameter key="output_type"	value="XML"/>
      </operator>

I

Legacy User

Looks like a bug in Operator.java, getParameterAsFile():

lines 1123--

					File parent = result.getParentFile();
					parent.mkdirs();

What if getParentFile() returns null?

Sure enough, if I change my ResultWriter result_file to 'results/training_res_%{t}.txt', it works.

Where do I file a bug report?

IngoRM

Hi,

this issue is fixed in the latest developer edition (as far as I know already delivered via the update server to the Enterprise Edition users) and will also be part of the next community release.

Thanks for pointing this out. Cheers,
Ingo

Unknown

I have the same problem with ResultsWriter and ProcessLog. Am I right to suppose that the bugfixes covers these operators, too?
Is there already a release date for the next version of RapidMiner Community Edition?

-Rasputin

land

Hi Rasputin,
it's already on it's way to the servers...It will be available for downloads within the next days.

Greetings,
  Sebastian

Unknown

Thanks, in 4.5 it's working.

-Rasputin