[9.3] Fix readiness edge case on startup (#140791)#141063
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elasticsearchmachine merged 1 commit intoelastic:9.3from Jan 23, 2026
Merged
[9.3] Fix readiness edge case on startup (#140791)#141063elasticsearchmachine merged 1 commit intoelastic:9.3from
elasticsearchmachine merged 1 commit intoelastic:9.3from
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The readiness service watches for cluster state updates to determine when the node is ready. It must have a master node elected, and file settings must have been applied. Normally those take a little bit of time. However, the readiness services is setup to not even allow starting the tcp listener until after the service start method is called. This occurs in Node.start(), but _after_ the initial node join. If the initial join occurs before start, and the state already reflects the "ready" state, when start is called the service will be marked active, but nothing will ever start the listener. This commit adjusts the readiness service to keep track of the last state applied. It also moves adding the cluster state listener to when the service is started. Finally, it adjusts the readiness test helpers to use assertBusy instead of a hand rolled backoff loop. closes elastic#136955
rjernst
added
:Core/Infra/Node Lifecycle
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Backports the following commits to 9.3: