[8.19] 🌊 Streams: Prevent concurrent access (#222961)#224098
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kibanamachine merged 2 commits intoelastic:8.19from Jun 17, 2025
Merged
[8.19] 🌊 Streams: Prevent concurrent access (#222961)#224098kibanamachine merged 2 commits intoelastic:8.19from
kibanamachine merged 2 commits intoelastic:8.19from
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This PR guards changes to the streams state that go through `State.attemptChanges` via the newly introduced lock manager. If two requests are happening at the same time, one of them now fails with a 409. ## Concerns * Lock expiry is 30s for now - is this too little? Should be good enough for now, maybe we need to reconsider once we introduce the bulk api * This is only guarding changes that go through the `State` class - some things like queries and dashboards do not, so they can still be subject to race conditions. We could sprinkle more locks over the code base, but I would like to solve this by moving them into `State` as well, that seems like the cleaner approach, even though a bit more effort * Biggest question - on this PR the concurrent request fails directly with a 409. Is this OK or should it wait and retry a couple times? I'm in favor of starting like this and seeing if this is actually a problem. --------- Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com> Co-authored-by: Kevin Lacabane <kevin.lacabane@elastic.co> (cherry picked from commit a8b2ac6)
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