[Fizz] Fix aborts during resumed rendering#36584
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Fizz previously identified a task that was rendering during an abort by marking its blocked Segment as `RENDERING`. This does not work for resumed replay tasks because they do not have a Segment, so an abort during replay could eagerly abort the task before it unwound and then report the internal `null` throw instead of the abort reason. Track the task currently executing on the Request so aborting can leave the in-flight task to unwind through its normal error path for both render and replay tasks. Since this replaces the only purpose of the Segment `RENDERING` status, remove that status and its associated bookkeeping. When resumed work unwinds after aborting, use the request's abort reason in the replay catch paths so aborting while replaying a prerendered tree or while rendering a resumed segment reports the meaningful abort reason instead of the internal control-flow value.
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Stacked on #36583 Fizz previously identified a task that was rendering during an abort by marking its blocked Segment as `RENDERING`. This does not work for resumed replay tasks because they do not have a Segment, so an abort during replay could eagerly abort the task before it unwound and then report the internal `null` throw instead of the abort reason. Track the task currently executing on the Request so aborting can leave the in-flight task to unwind through its normal error path for both render and replay tasks. Since this replaces the only purpose of the Segment `RENDERING` status, remove that status and its associated bookkeeping. When resumed work unwinds after aborting, use the request's abort reason in the replay catch paths so aborting while replaying a prerendered tree or while rendering a resumed segment reports the meaningful abort reason instead of the internal control-flow value. DiffTrain build for [de8e005](de8e005)
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Stacked on facebook#36583 Fizz previously identified a task that was rendering during an abort by marking its blocked Segment as `RENDERING`. This does not work for resumed replay tasks because they do not have a Segment, so an abort during replay could eagerly abort the task before it unwound and then report the internal `null` throw instead of the abort reason. Track the task currently executing on the Request so aborting can leave the in-flight task to unwind through its normal error path for both render and replay tasks. Since this replaces the only purpose of the Segment `RENDERING` status, remove that status and its associated bookkeeping. When resumed work unwinds after aborting, use the request's abort reason in the replay catch paths so aborting while replaying a prerendered tree or while rendering a resumed segment reports the meaningful abort reason instead of the internal control-flow value. DiffTrain build for [de8e005](facebook@de8e005)
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Stacked on facebook#36583 Fizz previously identified a task that was rendering during an abort by marking its blocked Segment as `RENDERING`. This does not work for resumed replay tasks because they do not have a Segment, so an abort during replay could eagerly abort the task before it unwound and then report the internal `null` throw instead of the abort reason. Track the task currently executing on the Request so aborting can leave the in-flight task to unwind through its normal error path for both render and replay tasks. Since this replaces the only purpose of the Segment `RENDERING` status, remove that status and its associated bookkeeping. When resumed work unwinds after aborting, use the request's abort reason in the replay catch paths so aborting while replaying a prerendered tree or while rendering a resumed segment reports the meaningful abort reason instead of the internal control-flow value. DiffTrain build for [de8e005](facebook@de8e005)
github-actions Bot
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Jun 1, 2026
Stacked on facebook#36583 Fizz previously identified a task that was rendering during an abort by marking its blocked Segment as `RENDERING`. This does not work for resumed replay tasks because they do not have a Segment, so an abort during replay could eagerly abort the task before it unwound and then report the internal `null` throw instead of the abort reason. Track the task currently executing on the Request so aborting can leave the in-flight task to unwind through its normal error path for both render and replay tasks. Since this replaces the only purpose of the Segment `RENDERING` status, remove that status and its associated bookkeeping. When resumed work unwinds after aborting, use the request's abort reason in the replay catch paths so aborting while replaying a prerendered tree or while rendering a resumed segment reports the meaningful abort reason instead of the internal control-flow value. DiffTrain build for [de8e005](facebook@de8e005)
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Stacked on #36583
Fizz previously identified a task that was rendering during an abort by marking its blocked Segment as
RENDERING. This does not work for resumed replay tasks because they do not have a Segment, so an abort during replay could eagerly abort the task before it unwound and then report the internalnullthrow instead of the abort reason.Track the task currently executing on the Request so aborting can leave the in-flight task to unwind through its normal error path for both render and replay tasks. Since this replaces the only purpose of the Segment
RENDERINGstatus, remove that status and its associated bookkeeping.When resumed work unwinds after aborting, use the request's abort reason in the replay catch paths so aborting while replaying a prerendered tree or while rendering a resumed segment reports the meaningful abort reason instead of the internal control-flow value.