Emit per-stage sleep metrics#47
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| type sleepHistogramEmitter interface { | ||
| Histogram(name string, value float64, tags ...string) |
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same here with the separate interfaces, if we could just all collapse them into Emitter into client.go
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| # gh-ost metrics catalog | |||
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I was waiting to do this until the end but sure https://github.com/Shopify/schema-migrations/issues/5465
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Makes sense to do this later 👍
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Add sleep metric helpers and instrument the main migration sleep/wait paths. Metrics emitted: - sleep.duration_milliseconds tagged with stage - sleep.total_milliseconds tagged with stage Stages covered: - cut_over_postpone - chunk_throttle - retry_backoff - replica_wait Use millisecond units so sub-second waits, such as replica polling and nice-ratio throttling, are not truncated to zero. Document the sleep stage catalog and add unit coverage for the helper, including sub-second durations.
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Closes https://github.com/Shopify/schema-migrations/issues/5459
Add sleep metric helpers and instrument the main migration sleep/wait paths.
Metrics emitted:
Stages covered:
Use millisecond units so sub-second waits, such as replica polling and
nice-ratio throttling, are not truncated to zero. Add unit coverage for the
helper, including sub-second durations.
script/cibuildreturns with no formatting errors, build errors or unit test errors.