Handling Pipeline Node Errors

The errors and warnings in pipeline nodes are handled from the client side. This error check provides you an early and instant feedback on the node errors in a pipeline. This avoids request (REST API call) to the server (and potentially to Hive) and reduces the load on server for errors.

Following are the errors and warnings handled in the User Interface:

• Error message for input and output unmapped columns.
• Error message for unmapped derivation (a derivation expression without expected output columns). This occurs when you delete the derived output column without deleting the expression.
• Warning message for non-target and non-model export type node being the leaf node in the pipeline.

WARNING

A request is sent from the client to the server only for warnings. For errors (or errors and warnings), no request is sent from the client to the server.