question Re: Nifi in production in Archives of Support Questions (Read Only)

Nifi in production

avijeetd — Wed, 30 Nov 2016 15:11:20 GMT

Hi,

It seems the nifi canvas can be used by only one person for one dataflow

How do we start/stop/schedule multiple data flows? We can't keep all on the canvas..right?

Thanks,

Avijeet

Re: Nifi in production

pgreiff — Wed, 30 Nov 2016 16:06:33 GMT

Actually the NIFI canvas can be used by multiple sessions in parallel - just test it on your environment: Open it once in WebBrowser A and then in B (should be different ones eg. FireFox and Chrome etc.). However you are right - there needs to go some more improvement into the features to better support the management. Good news is that it is already considered important, have a look at https://cwiki.apache.org/confluence/display/NIFI/Configuration+Management+of+Flows

Right now a good approach would be to group the different data flows in process groups for management and version controlling (via templates).

Re: Nifi in production

avijeetd — Wed, 30 Nov 2016 16:19:28 GMT

hi @Peter Greiff, Thanks for the response.

so lets say I have 10 templates, and I want to start/stop them using rest-api

can I do it, without loading them in the UI? what does nifi-considers as active? I believe only active elements can be accessed by rest api?

Re: Nifi in production

pgreiff — Wed, 30 Nov 2016 16:35:03 GMT

Avijeet, yes this is possible. You will have to use the "Update Processor" API from NIFI.

There is a great description written by Andrew Grande about How to update Nifi Flows on the fly: https://community.hortonworks.com/articles/3160/update-nifi-flow-on-the-fly-via-api.html

Re: Nifi in production

avijeetd — Wed, 30 Nov 2016 16:56:50 GMT

Hi Peter, Thanks, let me try to see is if i can start a template/process group using rest-api without loading in UI.

Re: Nifi in production

pgreiff — Wed, 30 Nov 2016 17:13:36 GMT

You can also use the commandline: https://community.hortonworks.com/questions/49338/using-the-nifi-rest-api-to-execute-a-data-flow-cre.html