Symptoms
When a Flink deployment is created to deploy a job, the job manager pod fails with the following error in the log:
ERROR com.ibm.ei.streamproc.model.jobgraph.apinode.connector.ResponseJsonRowDataDeserializationSchema [] - Failed to convert response constant value xxx
Causes
The error might occur because of one of the following reasons:
- Your flow contains a watsonx.ai node, and you mapped a prompt variable with a constant value.
- Your flow contains an API node, and you mapped an input parameter with a constant value.
Resolving the problem
To resolve the problem, complete any one of the following steps:
- Use a transform node prior to the watsonx.ai or the API node to create new event properties with constant values. In the watsonx.ai or API node, map these new properties to the prompt variables or input parameters.
- Export the flow as SQL and deploy by using the Apache SQL runner sample.