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

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

     [ https://issues.apache.org/jira/browse/NIFI-2267?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Koji Kawamura updated NIFI-2267:
--------------------------------
    Status: Patch Available  (was: Open)

Sent a PR 657 to provide this through ProcessorInitializationContext.
https://github.com/apache/nifi/pull/657

> 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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