debug batch executor

KNIME Analytics Platform
1

I have a workflow which runs perfect on my desktop (mac) inside eclipse. But i need to run it directly on a server (linux) as a batch job.

If I use batchexecutor the wokrflow doesn't produce any errors just some warnings, but it fails with this in the end:

INFO 	 main BatchExecutor	 Workflow execution done Finished in 2 mins, 24 secs (144497ms)
INFO 	 main BatchExecutor	 ========= Workflow did not execute sucessfully ============
Knime:
JVM terminated. Exit code=4

Any idea what is causing this?

Is there possibility to increase logging intensity so I can at least find out on which node it fails, or which nodes it can't execute?

I start knime with the following command line:
 

/var/www/html/knime-full_3.1.2/knime \
     -consoleLog -nosplash -reset -failonloaderror \
     -application org.knime.product.KNIME_BATCH_APPLICATION \
     -credential="database;root;demodemo1" \
     -workflowDir=./workflow \
     -workflow.variable="productDataBasePath,/var/www/html/ml_productdata/,String" \
     -workflow.variable="databaseUrl,jdbc:mysql://127.0.0.1:3306/database,String" \
     -workflow.variable="productDataAdditionalsPath,/var/www/html/ml/etl/additional-data/,String" \
     -workflow.variable="runId,-1,int"

 

2

I think i solved that myself. The key is to look for knime.log file (either in the workflow .metadata subfolder or in the workspace). There you may find a list of the exit status of all nodes. That was enough fo rme to find the malfunctioning one.

3

Another debug poss is to write files during the execution. Than you know until which point the workflow could be executed.

Best regards, Iris