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Posted to issues@nifi.apache.org by "Mark Payne (JIRA)" <ji...@apache.org> on 2016/07/26 18:12:20 UTC
[jira] [Assigned] (NIFI-2406) Rare start-up problems resulting in
all nodes disconnected
[ https://issues.apache.org/jira/browse/NIFI-2406?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mark Payne reassigned NIFI-2406:
--------------------------------
Assignee: Mark Payne
> Rare start-up problems resulting in all nodes disconnected
> ----------------------------------------------------------
>
> Key: NIFI-2406
> URL: https://issues.apache.org/jira/browse/NIFI-2406
> Project: Apache NiFi
> Issue Type: Bug
> Reporter: Joseph Percivall
> Assignee: Mark Payne
> Attachments: logs.tar.gz
>
>
> While testing PR 678[1], I came across a time where all the nodes were in a disconnected state and each were in a weird state of heartbeating but not connected.
> Also in the logs there were ~1000 lines of:
> 2016-07-26 11:38:07,841 INFO [Leader Election Notification Thread-1] o.a.n.c.l.e.CuratorLeaderElectionManager org.apache.nifi.controller.leader.election.CuratorLeaderElectionManager$ElectionListener@24fae8c6 This node has been elected Leader for Role 'Cluster Coordinator'
> This message only gets called here[2] which is a call back for ZK. Also there were many log messages of:
> 2016-07-26 11:54:07,910 WARN [Clustering Tasks Thread-1] o.a.n.c.c.node.NodeClusterCoordinator Failed to determine which node is elected active Cluster Coordinator: ZooKeeper reports the address as localhost:6001, but there is no node with this address
> I believe this is a problem with ZK/NiFi that existed before this PR and not directly related to the PR being reviewed. I will attach a tar of the 3 node's logs.
> [1] https://github.com/apache/nifi/pull/678
> [2] https://github.com/apache/nifi/blame/master/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/main/java/org/apache/nifi/controller/leader/election/CuratorLeaderElectionManager.java#L220-L220
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