Why does the NIFI GetHTTP processor only have a success termination relationship? How to deal with process failure?

[#1]

I find it odd that the GetHTTP processor does not have a failure termination relationship, given that the process can fail due to a number of reasons. Can someone shed light on the proper way to handle a failure (e.g. remote site down)?

Thanks.

[#2 · Accepted solution]

@David Sargrad

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NiFi is designed to prevent data loss. This means that NiFi needs to do something with NiFi FlowFiles when the processing of that FlowFile encounters a failure somewhere within a dataflow.

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When in comes to ingest type processors like GetHTTP, a FlowFile is only generated upon success. As such, there is no FlowFile created during failure that would need to be handled/routed to some failure relationship.

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Upon next scheduled run, the getHTTP processor will simply try to execute just like it did on previous run. If successful, a FlowFile will be produced and routed to the outbound success relationship connection.

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Thank you,

Matt

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