Start the data flow

Learn how run the flow and confirm that data is successfully sent to the Iceberg table.

Select all the data flow components you want to start.
Click the Start icon in the Actions toolbar.
Alternatively, right-click a single component and choose Start from the context menu.

Your flow should be running without any errors. Data should be generated in the form of FlowFiles, and the files should be written to your designated Kafka topic.

You can verify the operation of your Iceberg ingest data flow by checking that data is running through the flow you have built and it actually appears in the target table.

You can verify that NiFi processors are not producing errors.
You can look at the processors in the UI to see the amount of data that has gone through them. You can also right-click on the processors, or on connections to view status history.
You can query the data in Hue: