https://jira.opendaylight.org This file is an XML representation of an issue en-us 8.20.10 820010 22-06-2022 https://jira.opendaylight.org/browse/CONTROLLER-1786 controller <p>Scenario of 3-node cluster:- <br/> Bring all nodes up, transactions (car test) go through.<br/> Shut down leader (default-config) in 3 nodes (say node 1)<br/> Shut down leader (default-config) in 2 nodes. (say node 2)</p> <p>Bring up any of the shut down node (say node 2)<br/> Karaf logs says node2 didn't join cluster, but jolokia lookup <span class="error">&#91;1&#93;</span> for shard-default-config shows <br/> it has a leader. <br/> When we try transactions (car tests - check karaf logs ) it fails .</p> CONTROLLER-1786

Jolokia lookup says leader exists but karaf logs says no leader

Bug High Resolved Done Unassigned Sai MarapaReddy Tue, 7 Nov 2017 21:51:26 +0000 Thu, 2 Aug 2018 12:42:17 +0000 Thu, 2 Aug 2018 12:42:17 +0000 Fluorine Neon clustering 0 2 <p><b>For jolokia</b> the leader information is fetched from <span class="error">&#91;1&#93;</span> which in turn fetches from <span class="error">&#91;2&#93;</span><br/> <span class="error">&#91;1&#93;</span> controller/opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/jmx/mbeans/shard/ShardStats.java<br/> <span class="error">&#91;2&#93;</span> controller/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/client/messages/OnDemandRaftState.java<br/> jolokia output - <span class="nobr"><a href="https://jira.opendaylight.org/secure/attachment/14221/14221_jolokia+output.txt" title="jolokia output.txt attached to CONTROLLER-1786">jolokia output.txt^{<img class="rendericon" src="https://jira.opendaylight.org/images/icons/link_attachment_7.gif" height="7" width="7" align="absmiddle" alt="" border="0"/>}</a></span> </p> <p><b>karaf logs</b><br/> says Shard member-3-shard-default-config currently has no leader. Attached snippet of the karaf log <span class="nobr"><a href="https://jira.opendaylight.org/secure/attachment/14220/14220_leader_not_found.txt" title="leader_not_found.txt attached to CONTROLLER-1786">leader_not_found.txt^{<img class="rendericon" src="https://jira.opendaylight.org/images/icons/link_attachment_7.gif" height="7" width="7" align="absmiddle" alt="" border="0"/>}</a></span> </p> <p><a href="https://jira.opendaylight.org/secure/ViewProfile.jspa?name=tpantelis" class="user-hover" rel="tpantelis">tpantelis</a> <br/> The code path in karaf logs differ from the code path that jolokia fetches the leader from. Are they expected to differ ? </p> <p>I'm not really clear on the purpose of this Jira - it seems it's really asking a question rather than reporting a bug. </p> <p>The code paths to obtain the leader info in the 2 scenarios differ. jolokia is an on-demand read from the MBean. For transactions, the shard leader info is resolved and cached on the front-end for efficiency by the ShardManager via messages sent from the shard.  </p> <p> </p> Relates NETVIRT-1315 CONTROLLER-1856 OVSDB-434 Development Epic Link NETVIRT-996 Rank 0|i037d3: