docs: pipeline: outputs: s3: document handling of buffer files from a previous run - #2702
docs: pipeline: outputs: s3: document handling of buffer files from a previous run#2702eschabell wants to merge 1 commit into
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📝 WalkthroughWalkthroughThe S3 output documentation now describes buffer files restored from previous runs, including size accounting, exhausted retry handling, and shutdown cleanup behavior in Fluent Bit 5.1.2 and later. ChangesS3 buffer restoration documentation
Estimated code review effort: 1 (Trivial) | ~3 minutes Merge Risk: 🔵 Low · up to The S3 documentation may lead users to believe every restored buffer file is removed at startup rather than only the applicable orphaned files, causing incorrect expectations about retained buffered data. Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In `@pipeline/outputs/s3.md`:
- Line 455: Clarify the Fluent Bit startup cleanup description to state that
only orphaned buffer files in store_dir are targeted, and explain how the plugin
handles those files while preserving the existing size-accounting and
retry_exhausted_action behavior.
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… previous run
Document the startup buffer accounting and orphan cleanup added in
fluent-bit f298f03df, b068b24de, and 1ad5eb6d6.
- Add a Buffer files from a previous run subsection under Reliability
- Note that restored buffer files are now measured and counted toward
store_dir_limit_size, and that earlier versions couldn't size a file
that wasn't loaded into memory so it escaped the limit
- Note that a restored chunk which already exceeded retry_limit isn't
retried, and record the warning the plugin logs
- Note that retry_exhausted_action then applies to that chunk, and that
earlier versions left it consuming space in the store_dir
- Note that the same handling applies to the shutdown buffer sweep
- State that the startup cleanup only targets orphaned buffer files left
by a previous run
- Note that the current run's timestamped directory, the
multipart_upload_metadata directory, and the quarantine directory are
skipped
- Describe how orphaned files are handled: PutObject upload, local delete
on success, locked files skipped, failure count preserved for retry,
empty previous-run directory removed
Signed-off-by: Eric D. Schabell <eric@schabell.org>
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Document the startup buffer accounting and orphan cleanup added in
fluent-bit f298f03df, b068b24de, and 1ad5eb6d6.
store_dir_limit_size, and that earlier versions couldn't size a file
that wasn't loaded into memory so it escaped the limit
retried, and record the warning the plugin logs
earlier versions left it consuming space in the store_dir
Signed-off-by: Eric D. Schabell eric@schabell.org
Summary by CodeRabbit
store_dir_limit_size.retry_limit: they are not retried and instead follow the configuredretry_exhausted_action, such as quarantine or deletion.