Is there any way to keep data globally for all processor that contained in my flow?

prakharagrawal6 — Fri, 16 Sep 2022 11:45:27 GMT

Hello,

I am getting a scenario in my nifi flow in which I will have to keep some data globally in runtime for all processor that contained in my flow, so I can able to get that global data in any processor.

Thankyou

Re: Is there any way to keep data globally for all processor that contained in my flow?

egarelnabi — Wed, 14 Jun 2017 18:22:27 GMT

@Prakhar Agrawal

Take a look at the DistributedMapCache. It allows you to save flowfile data for consumption by processors across nodes and processors.

There are two controller components, the DistributesMapCacheServer (runs on one node) and the DistricutedMapCacheClient (runs on all nodes if you've got a cluster). There are also the processors that interact with the DistributedMapCache, namely FetchDistributedMapCache and PutDistributedMapCache

Take a look here for some elaboration/documentation:

https://nifi.apache.org/docs.html

https://community.hortonworks.com/questions/35223/distributedmapcacheclientservice-nifi-wecrawlerxml.html

Here for examples using DistributedMapCache:

https://github.com/hortonworks-gallery/nifi-templates/tree/master/templates (webcrawler.xml template)

http://funnifi.blogspot.ca/2016/04/

question Re: Is there any way to keep data globally for all processor that contained in my flow? in Archives of Support Questions (Read Only)

Is there any way to keep data globally for all processor that contained in my flow?

Re: Is there any way to keep data globally for all processor that contained in my flow?