Backport (v1.16): buffer: fix emit error of race condition #4450
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Backported from 13a5199. After 95438b2 (#4342), there is a section where chunks do not have a lock in `write_step_by_step()`. `write_step_by_step()` must ensure their locks until passing them to the block. Otherwise, race condition can occur and it can cause emit error by IOError. Example of warning messages of emit error: [warn]: #0 emit transaction failed: error_class=IOError error="closed stream" location=... [warn]: #0 send an error event stream to @error: error_class=IOError error="closed stream" location=... Signed-off-by: Daijiro Fukuda <fukuda@clear-code.com>
ashie
approved these changes
Mar 27, 2024
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Backported from 13a5199 (#4447).