I am facing attached error while using DetectDuplicate processor. I need to configure Cache for the same. Please let me know where and how can I configure this to fix the same.
could you share screenshots of your controller services configuration? on which node is running your map cache server? is the corresponding port open between your nodes? do you have any logs in ./log/nifi-app.log?
If you are running a NiFi cluster you would likely want to run the DistributedMapCacheServer on the NCM, and the DistributedMapCacheClient on the Nodes. Where to run the controller service is selected on the very first screen when you are adding the controller service... it says "Available on" and selects either "Nodes" or "Cluster Manager".
When configuring the DistributedMapCacheClient you would point to the host of the NCM, and port that the DsitributedMapCacheServer is running on (on the NCM).
After you click the "Add" icon on the right top and select your "control service", you will see in the bottom of the dialogue window, this is a drop list of "availability", align with "cancel" button.