[jira] [Created] (NIFI-2267) Provide a way for Processor to determine running NiFi node type - standalone/clustered, primary/node

["Koji Kawamura (JIRA)" <ji...@apache.org>]

Koji Kawamura created NIFI-2267:
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             Summary: Provide a way for Processor to determine running NiFi node type - standalone/clustered, primary/node
                 Key: NIFI-2267
                 URL: https://issues.apache.org/jira/browse/NIFI-2267
             Project: Apache NiFi
          Issue Type: Improvement
          Components: Core Framework
    Affects Versions: 1.0.0
            Reporter: Koji Kawamura
            Assignee: Koji Kawamura
             Fix For: 1.0.0


Currently, there's no way for processor to understand if it's running on:

- Standalone or Cluster?
- If in a cluster, is it a Primary node or not?

There're processors that need this information to provide more cluster friendly behavior, such as MonitorActivity.

@OnPrimaryNodeStateChange annotation is already available. However, it's notified only when a primary node has been changed. So, If a processor is added to an existing NiFi cluster, which has already one node elected as a primary node, the processor is not notified, thus it won't be able to know it's a primary node.

This ticket is meant for tracking the effort of adding such capability to provide node type information.



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