shunping commented on code in PR #36672:
URL: https://github.com/apache/beam/pull/36672#discussion_r2478142809
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sdks/go/pkg/beam/runners/prism/internal/engine/elementmanager.go:
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@@ -1334,10 +1334,13 @@ func (ss *stageState) injectTriggeredBundlesIfReady(em
*ElementManager, window t
}
state := wv[key]
endOfWindowReached := window.MaxTimestamp() < ss.input
+ em.refreshCond.L.Lock()
+ emNow := em.ProcessingTimeNow()
Review Comment:
The problem as I mentioned below
(https://github.com/apache/beam/pull/36672#issuecomment-3466027378) is about
the order of obtaining two locks (refreshCond.L and ss.mu) is different in the
watermark evaluation go routine and the go routine for running `PersistBundle`.
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