[hotfix][Process] Tolerate transient UNKNOWN execution-engine status - #4329
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[hotfix][Process] Tolerate transient UNKNOWN execution-engine status#4329czy006 wants to merge 3 commits into
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…ndoning a job The polling loop only treated PENDING/RUNNING/SUBMITTED as executing, so a single UNKNOWN - including on the first post-submit status query - exited the loop into the 'unexpected terminal status' path: the job was untracked despite its persisted identifier, hasAliveTableProcess stopped gating, and the next tick could submit a concurrent job for the same table. One read timeout, network blip or a new server-side status enum was enough. Keep polling while UNKNOWN within a budget (MAX_UNKNOWN_STATUS_POLLS=3, counter reset on any known status), and on exceeding it cancel the job best-effort and record a synthesized FAILED terminal state so the normal COMPLETE_FAILED path (and retry) applies. Red tests (with a compile shim on the old code): transient case stuck at SUBMITTED instead of SUCCESS; persistent case never cancelled and never FAILED. Complements the unpersisted-identifier fix. Fix record: docs/fix-records/2026-08-16-fix-21-unknown-status-tolerance.md
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Brief change log
Continue polling after transient
UNKNOWNexecution-engine statuses and fail only after the configured consecutive threshold. On persistent unknown status, the executor performs best-effort cancellation and records the failure.How was this patch tested?
TestTableProcessExecutorlocally with JDK 11 before creating this pull request.Documentation