question Hot swapping the jar in Nifi in Archives of Support Questions (Read Only)

Hot swapping the jar in Nifi

blood9raven — Tue, 06 Sep 2016 17:32:10 GMT

Hallo,

How do you handle restarts in Nifi? Is it possible to add new Processors or to swap jars without restarts?

And if we need to restart how to handle them if we need high availability? It is possible to handle this on client side, but it is not solution.

Best

Bojan

Re: Hot swapping the jar in Nifi

MattWho — Tue, 06 Sep 2016 19:29:13 GMT

@Bojan Kostic

It is not currently possible to add new jars /nars to a running NiFi. A restart is always required to get these newly added items loaded. Upon NiFi startup all the jars/nars are unpacked in to the NiFi work directory.

To maintain high availability it is recommended that you use a NiFi cluster. This will allow you to do rolling restarts so that your entire cluster is not down at the same time. If adding new components as part of this rolling update, you will not be able to use those new components until all nodes have been updated.

Thanks,

Matt

Re: Hot swapping the jar in Nifi

blood9raven — Fri, 09 Sep 2016 16:45:16 GMT

Thanks, i will check out clustering.

Best

Bojan