apache-nifi: distributedMapCacheServer how to start

Question

perhaps these will look as a silly questions: I have no idea how to use the DistributedMapCacheServer. How do I start it ? Is it supposed to be within nifi or do I have install it as secondary package ?

Answer 1

The DistributedMapCacheServer can be started just like any other Controller Service, by configuring it to be valid and hitting the "start" button.

The unique thing about the DistributedMapCacheServer is that processors work with the cache by utilizing a DistributedMapCacheClientService[1]. So you will create both a Server and Client Service. Then configure the processor to use the Client Service. Next start both the server and service. Finally start the processor.

[1] https://nifi.apache.org/docs/nifi-docs/components/org.apache.nifi.distributed.cache.client.DistributedMapCacheClientService/index.html

Answer 2

To start DistributedMapCacheServer , you need to first create it . It will be created through NiFi UI ,by selecting the controller setting tab from the top right side menu .click on + button and add DistributedMapCacheServer . configure it and enable it .