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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (NIFI-1678) Nodes in cluster should use ZooKeeper to store heartbeat messages instead of sending to NCM
Date Thu, 31 Mar 2016 20:50:26 GMT

    [ https://issues.apache.org/jira/browse/NIFI-1678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15220648#comment-15220648
] 

ASF GitHub Bot commented on NIFI-1678:
--------------------------------------

GitHub user markap14 opened a pull request:

    https://github.com/apache/nifi/pull/317

    NIFI-1678

    Refactored NCM & Nodes so that nodes send heartbeats to ZooKeeper and NCM reads heartbeats
from ZooKeeper.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/markap14/nifi NIFI-1678

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/nifi/pull/317.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #317
    
----
commit 9bb8a9d8c09b92f05333203f9e4a70dae4383d8c
Author: Mark Payne <markap14@hotmail.com>
Date:   2016-03-23T17:16:13Z

    NIFI-483: Use ZooKeeper's Leader Election to determine Primary Node

commit 9b803c15c9d1573d6a7d9ae5009009fb328793d1
Author: Mark Payne <markap14@hotmail.com>
Date:   2016-03-24T15:49:08Z

    NIFI-1678: Started refactoring heartbeating mechanism, using a new package: org.apache.nifi.cluster.coordination

----


> 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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