Call Workflow (Table Based) failed

Hi,

We are Using Parallel Chunk Loop(use automatically chunk count) to call workflows by using “Call workflow (table based)” .
Table Creator(6 Rows) -> Parallel Chunk Start-> Call workflow (table based) -> Parallel Chunk End
※ CPU has a 4-core processor, 8 logical processors by the result of msinfo32 command

This workflow worked well for months, but today it crashes with an error:
ERROR Call Workflow (Table Based) 0:18: Execute failed: Read timed out

How to solve the problem? Do I need to increase time-out value?
Thanks in advance.
Ryu

Hi,
Are you calling the workflow remotely from a local workflow? Could it have to do with this issue?

Kind regards
Alexander

Hi @AlexanderFillbrunn

Thank you very much for your quick response.
Yes, We are calling a local workflow,
But the Java version is 1.8.0_152 , and OS is Windows Server 2016 in our environment,
It seems the error has nothing to do with the issue.
The workflow worked well in this morning, but failed in the afternoon.

BTW:
KNIME Sever : 4.82
KNIME ANALYTICS PLATFORM: 3.72

Ryu

Hi Ryu,
Thank you for that information. Would you mind also sharing your KNIME log? Do you use the KNIME AP locally and as the server’s executor? I am wondering if the actual invokation of the workflow fails or if the workflow itself fails because some node throws the error. Can you trigger the workflow you are trying to call manually, e.g. from the AP and find out which node it is that gives you problems?
Kind regards
Alexander

Hi @AlexanderFillbrunn

We use as the server’s executor.
And the error is not easy to reproducible because it worked well for months and also worked well in yesterday evening and today morning.

I am doubting whether some parallel processed workflow made system resources heavily utilized, so the calling another workflow is time out.

BTW: Node ID of the “Call Workflow(Table Based)” node is 18 which printed in the error message.

Best regards.
Ryu

The things that come to mind are:

  • how stable is your remote connection and is the machine running the KNIME server a virtual one or hardware
  • does the server use SSD or HD or some shared storage via another network
  • is an agressive virus scanner running?
  • are there any (third) database connections involved

And indeed a full log would maybe give us more information

1 Like

Hi,
I got the log but unfortunately it does not give away more than the error message. You raise good questions. If the workflows are mounted on a network drive, this could cause performance issues. @laughsmile could you give us some more info on the setup?
Kind regards
Alexander