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refactor(append): Log mismatched offsets on takeover errors#4545

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cjc25 wants to merge 1 commit intoGoogleCloudPlatform:masterfrom
cjc25:takeover-error-log
Open

refactor(append): Log mismatched offsets on takeover errors#4545
cjc25 wants to merge 1 commit intoGoogleCloudPlatform:masterfrom
cjc25:takeover-error-log

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@cjc25 cjc25 commented Mar 27, 2026

When takeover offset doesn't match the requested offset, logs are more useful if we know what each value was.

When takeover offset doesn't match the requested offset, logs are more
useful if we know what each value was.
@cjc25 cjc25 requested a review from a team as a code owner March 27, 2026 14:11
@cjc25 cjc25 requested a review from raj-prince March 27, 2026 14:11
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Summary of Changes

Hello, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request improves the observability of errors occurring during the creation of appendable object writers. By including specific offset values in the error message, it becomes easier to diagnose issues related to stale object views and metadata cache inconsistencies.

Highlights

  • Enhanced Error Logging: Updated the error message in the bucket handle to include the actual and requested offsets when a mismatch occurs during object writer takeover.
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Code Review

This pull request improves error reporting in internal/storage/bucket_handle.go by including the specific offset values in the error message when a mismatch occurs. A review comment suggests using the %d format specifier instead of %v for these integer offsets to better align with idiomatic Go practices.


if off != req.Offset {
err = fmt.Errorf("takeover offset for the created appendable object writer does not match the requested offset")
err = fmt.Errorf("takeover offset %v for the created appendable object writer does not match the requested offset %v", off, req.Offset)
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medium

For better clarity and adherence to Go's idiomatic practices, it's recommended to use the %d format specifier for integer types instead of the general %v. This makes the expected type more explicit to readers of the code.

Suggested change
err = fmt.Errorf("takeover offset %v for the created appendable object writer does not match the requested offset %v", off, req.Offset)
err = fmt.Errorf("takeover offset %d for the created appendable object writer does not match the requested offset %d", off, req.Offset)

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