buffer: fix emit error of race condition #4447
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It looks like a lot of diffs, but most of them are just indentation changes. I have changed |
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There are three changes in this PR:
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I am considering if I can add some tests... |
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Even though it will be squashed, split indentation commit may be better. |
I see!! |
After 95438b2 (fluent#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 <[email protected]>
I separated commits for clarity. Signed-off-by: Daijiro Fukuda <[email protected]>
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Thanks! I have separated them. |
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I will check the behavior a little more tomorrow and add some tests if possible, but basically, I think this is prepared. |
Signed-off-by: Daijiro Fukuda <[email protected]>
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I have added a test. |
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Thanks! |
This was referenced Mar 27, 2024
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Which issue(s) this PR fixes:
What this PR does / why we need it:
After 95438b2 (#4342) (v1.16.4), 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:
Docs Changes:
Not needed.
Release Note:
Buffer: Fix emit error of v1.16.4 sometimes failing to process large data exceeding chunk size limit