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Description
See test case:
34586a2
Currently AppVersionValidator always receives appVersionUnderTest=0 as part of onNewLeadershipTerm. This happens due to ConsensusPublisher never encoding appVersion t
5736
o the new leadership term message.
Relevant logs:
1 observations from 2024-10-19 13:05:04.419+0100 to 2024-10-19 13:05:04.419+0100 for:
io.aeron.cluster.client.ClusterException: ERROR - incompatible version: 1.0.0 log=0.0.0
at io.aeron.cluster.ConsensusModuleAgent.onNewLeadershipTerm(ConsensusModuleAgent.java:960)
at io.aeron.cluster.ConsensusAdapter.onFragment(ConsensusAdapter.java:143)
at io.aeron.FragmentAssembler.onFragment(FragmentAssembler.java:118)
at io.aeron.logbuffer.TermReader.read(TermReader.java:76)
at io.aeron.Image.poll(Image.java:324)
at io.aeron.Subscription.poll(Subscription.java:195)
at io.aeron.cluster.ConsensusAdapter.poll(ConsensusAdapter.java:69)
at io.aeron.cluster.ConsensusModuleAgent.doWork(ConsensusModuleAgent.java:359)
at org.agrona.concurrent.AgentRunner.doWork(AgentRunner.java:304)
at org.agrona.concurrent.AgentRunner.workLoop(AgentRunner.java:296)
at org.agrona.concurrent.AgentRunner.run(AgentRunner.java:162)
at java.base/java.lang.Thread.run(Thread.java:1575)
As a side note: it would be very helpful to be able to distinguish whether we are validating a message in the log versus validating a snapshot. In our case we maintain backward compatibility of snapshotting logic, but maintaining backward compatibility of the log processing logic would be too much of a burden. Please let me know if I should create a separate feature request for that.
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