Hi, I want to perform provenance search through REST (to retrieve data and utilize it for monitoring etc). - Currently I dont know what is the correct format for calling /provenance endpoint (essentially doing search, not sure how to specify the search query itself). I tried following on browser, but see a blank page: http://localhost:8080/nifi-api/provenance?uuid=c94ea102-ff9d-4985-a548-fa6611d50e8a - Following api end point works: http://localhost:8080/nifi-api/provenance/search-options Any help in resolving this would be highly appreciated. Thanks Obaid ... View more

Hi, Do we need to stop all work-flows before adding a new node? Can we add new Nifi slaves to an existing cluster? Actually I had issues adding a new Slave to an existing cluster (cluster had few workflows running). Thanks ... View more

Hello to this awesome community, While playing with Apache Nifi (cluster with 5 slaves and 6GB RAM/slave) we managed to crash the cluster a bunch of times by making human errors. Example: We loaded a compressed file (100MB) in Nifi (GetFTP) and uncompressed it (500MB). Splitting this file (SplitText) caused the cluster to crash, since there were 1-2 million lines which translated to 1-2 million FlowFiles. Setting back pressure in such cases didn't help since SplitText will still generate 2million+ FlowFiles regardless. So in production, you wouldn't want your cluster to chock/crash if such kind of mistakes are made. 1. Nifi gives this awesome flexibility to write these workflows, however are there any guidelines that we could follow to safeguard against human-errors, and enable Nifi for a general purpose use (like share a Nifi cluster among teams) Thanks ... View more

Hi, I noticed 'Counter' button on top right of Nifi UI (Counters button is right next to Summary button on Admin options). I tried to search for any documentation however could find it. Could you guys share any link/documentations (or comments) on how to use this feature, purpose of this feature etc? Seems like an option to maintain counts, however not sure how to use it. Thanks ... View more

Hi, I have a scenario where My GetHTTP processor gets a JSON of system health metrics. I extract the attributes from the Json to essentially extract the desired metrics that I want to display on a Graph. Input: Suppose following attributes I extracted from Json using EvaluateJSONPath processor: metric1='<myconmapy>.<metric1> <value> <timestamp>' metric2='<myconmapy>.<metric2> <value> <timestamp>' metric3='<myconmapy>.<metric3> <value> <timestamp>' Output: I want to convert all the above mentioned attributes/metrics as lines of FlowFile content, such that one FlowFile content will look like following (each line contains an attribute value): <myconmapy>.<metric1> <value> <timestamp> <myconmapy>.<metric2> <value> <timestamp> <myconmapy>.<metric3> <value> <timestamp> Is there a way to achieve the above mentioned Output using Nifi processors? Thanks ... View more