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https://issues.apache.org/jira/browse/NIFI-1678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15228931#comment-15228931
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ASF GitHub Bot commented on NIFI-1678:
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Github user mcgilman commented on the pull request:
https://github.com/apache/nifi/pull/323#issuecomment-206521956
Running the updated PR I ran into an issue when testing node disconnection
while running an embedded ZK. It appears that by shutting down a majority of
the nodes, we can no longer write the heartbeats and consequently the last node
that was shut down still appears as connected.
> Nodes in cluster should use ZooKeeper to store heartbeat messages instead of
> sending to NCM
> -------------------------------------------------------------------------------------------
>
> Key: NIFI-1678
> URL: https://issues.apache.org/jira/browse/NIFI-1678
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Core Framework
> Reporter: Mark Payne
> Assignee: Mark Payne
> Fix For: 1.0.0
>
>
> Currently, nodes send heartbeats to the NCM periodically in order to indicate
> that they are actively participating in the cluster. As we move away from
> using an NCM, we need these heartbeats to go somewhere else. ZooKeeper is a
> reasonable location to push the heartbeats to, as it provides the HA that we
> need
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