feat(metrics): display scan rows/bytes, write rows/bytes in global counter metrics #17266
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The metrics recorder has some locks, let's run the performance tests. |
zhang2014
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Jan 14, 2025
| self.rows.fetch_add(progress_values.rows, Ordering::Relaxed); | ||
| self.bytes | ||
| .fetch_add(progress_values.bytes, Ordering::Relaxed); | ||
| if let Some(hook) = &self.hook { |
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this might result in double counting if cluster mode.
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can you help explain more about this?
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close this due to performance decrease, let me try another with prometheus' collector |
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Summary
currently we've tracked the scan rows/bytes, write rows/bytes progress value in query stats. and collected them into metrics in query_finished.
but this have an issue like, given a COPY statement which executed for 10 hours. this
databend_query_scan_rowswill kept to be zero during the executation, can not reflect the executing progress in metrics.this pr add a hook on the
Progressstruct to increment the global metrics as well as the local stats.Tests
Type of change
This change is