Hi all,
been trying to run some Agents on KNIME Pro / Team Plan and am encountering an issue in cases where everything works perfectly fine in KAP locally.
I experimented a fair bit with a minimal example to try and replicate…
Right now I am pinpointing the root cause to be tools that have a “data” folder (Files stored in Current Workflow Data Area)
so here we go:
Let’s start with something that works on Hub:
- simple agent with one tool
- Tool has table creator with some sample data in it, turns it into JSON and passes it through Tool Message output
- Agent can use this tool and responds
Workflow:
Tool:
Running in KAP:
Running as Data App on Hub (KNIME PRO ad hoc execution)
So now let’s change the tool and let’s write the data as .table file to workflow data area and also to data folder in tools folder (to be read relative to current workflow)
New tool - now reads from workflow data area:
Trying to run Agent in KAP whilst WFs are stored on HUB:
Extract from knime.log
Workflow to Tool #7: java.io.FileNotFoundException: File system element for parameter 'source' does not exist: 'C:\Users\marti\AppData\Local\Temp\knime_agent_10017\workflow_reader1312\data'
org.knime.core.node.KNIMEException: Errors in workflow - Contains one node with execution failure (Workflow to Tool #7)
at org.knime.core.node.KNIMEException.of(KNIMEException.java:124)
at java.base/java.util.Optional.map(Unknown Source)
at org.knime.core.node.workflow.virtual.subnode.VirtualSubNodeOutputNodeModel.waitForContentToExecute(VirtualSubNodeOutputNodeModel.java:212)
at org.knime.core.node.workflow.virtual.subnode.VirtualSubNodeOutputNodeModel.execute(VirtualSubNodeOutputNodeModel.java:172)
at org.knime.core.node.NodeModel.executeModel(NodeModel.java:605)
at org.knime.core.node.ExtendedScopeNodeModel.executeModel(ExtendedScopeNodeModel.java:86)
at org.knime.core.node.workflow.virtual.subnode.VirtualSubNodeOutputNodeModel.executeModel(VirtualSubNodeOutputNodeModel.java:162)
at org.knime.core.node.Node.invokeFullyNodeModelExecute(Node.java:1330)
at org.knime.core.node.Node.execute(Node.java:1037)
at org.knime.core.node.workflow.NativeNodeContainer.performExecuteNode(NativeNodeContainer.java:617)
at org.knime.core.node.exec.LocalNodeExecutionJob.mainExecute(LocalNodeExecutionJob.java:98)
at org.knime.core.node.workflow.NodeExecutionJob.internalRun(NodeExecutionJob.java:201)
at org.knime.core.node.workflow.NodeExecutionJob.run(NodeExecutionJob.java:120)
at org.knime.core.util.ThreadUtils$RunnableWithContextImpl.runWithContext(ThreadUtils.java:369)
at org.knime.core.util.ThreadUtils$RunnableWithContext.run(ThreadUtils.java:223)
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
at org.knime.core.util.ThreadPool$MyFuture.run(ThreadPool.java:125)
at org.knime.core.util.ThreadPool$Worker.run(ThreadPool.java:252)
Error when executing ad hoc job on Hub (KNIME Pro)
Log:
agenterrorlog.log (51.7 KB)
So now let’s change the tool back - delete the reader, insert table creator…
Now I’m getting similar error to when the reader was present…
Same if run as ad hoc execution on Hub:
So now the very interesting thing.
When I create a new tool from scratch and I place a CSV reader in it that reads a file available at a public URL…
Tool:
It works…
KAP with workflow on HUB:
Ad hoc execution:
