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ASF subversion and git services commented on NIFI-2406: ------------------------------------------------------- Commit 42df02f014df6ac332f41120d1d01eac0118d946 in nifi's branch refs/heads/master from [~markap14] [ https://git-wip-us.apache.org/repos/asf?p=nifi.git;h=42df02f ] NIFI-2406 This closes #820. Addressed regression introduced in NIFI-2406 where the cluster does not recognize a new Cluster Coordinator when the coordinator is shutdown > 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 > Fix For: 1.0.0 > > 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 -- This message was sent by Atlassian JIRA (v6.3.4#6332)