Python kernel won't start

KNIME Analytics Platform
1

I'm seeing intermittent infrequent errors "Execute failed: Could not start python kernel. Cause: The connection attempt timed out".

This seems to be a problem with any of the Knime Python scripting nodes.

I put "-Dknime.python.connecttimeout=5000" into knime.ini, but still see the problem.

Does it matter where within knime.ini this line is located?

Re-executing the node usually works, but this can become a problem when the node is inside a long loop.

2

Hi SOH,

Can you try to increase the timeout to 30000? 

Cheers,

Christian

3

Hi SOH,

like Christian mentioned increasing the timeout to 30000 would be a good idea, since the standard timeout is 10000.

If the problems still occur, could you please provide more information about your use case ? An example workflow would be great. Furthermore, it would be important to know, which operating system you are using and whether you use several python nodes in parallel.

 

Best

Clemens

6

Since setting the timeout to 30000, I haven’t had the problem.
Cheers.

7

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