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https://issues.apache.org/jira/browse/NIFI-619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15379675#comment-15379675
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ASF subversion and git services commented on NIFI-619:
------------------------------------------------------

Commit e89ee11199eb1cc4a008a7bf2658865d445b4e05 in nifi's branch 
refs/heads/master from [~ijokarumawak]
[ https://git-wip-us.apache.org/repos/asf?p=nifi.git;h=e89ee11 ]

NIFI-619: Make MonitorActivity more cluster friendly

With this commit, MonitorActivity can be configured as:

- Monitor activity per node individually
- Monitor cluster wide activity
  - Send notification flow-file from all of nodes
  - or only from a primary node

Changes:
- Added 'Monitoring Scope' property
- Added 'Reporting Node' property
- Falls back from cluster scope to node scope if necessary
- Persist the latest activity as Cluster state
- Examine cluster state on each node if necessary
- Only update the cluster state if current timestamp is later than existing
  timestamp stored in Zookeeper

This closes #575

Signed-off-by: jpercivall <[email protected]>


> update MonitorActivity processor to be cluster friendly
> -------------------------------------------------------
>
>                 Key: NIFI-619
>                 URL: https://issues.apache.org/jira/browse/NIFI-619
>             Project: Apache NiFi
>          Issue Type: Improvement
>            Reporter: Brandon DeVries
>            Assignee: Koji Kawamura
>            Priority: Minor
>             Fix For: 1.0.0
>
>
> This processor should be able to be used to monitor activity across the 
> cluster.  In its current state, alerting is based on activity of a single 
> node, not the entire cluster.
> For example, in a 2 node cluster, if system A is getting data from a given 
> flow and system B is not, system B will alert for lack of activity even 
> though the flow is functioning "normally".
> The ideal behavior would be fore an alert to be generated only if both 
> systems did not see data in the specified time.



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