feature: expose a metric for blockbuilder owned partitions #5042
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javiermolinar
requested review from
joe-elliott,
mdisibio,
mapno,
yvrhdn,
zalegrala,
electron0zero,
ie-pham,
stoewer and
carles-grafana
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zalegrala
reviewed
Apr 23, 2025
modules/blockbuilder/blockbuilder.go
Outdated
| @@ -232,6 +238,10 @@ func (b *BlockBuilder) running(ctx context.Context) error { | |||
| func (b *BlockBuilder) consume(ctx context.Context) (time.Duration, error) { | |||
| partitions := b.getAssignedPartitions() | |||
|
|
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| for _, p := range partitions { | |||
| metricOwnedPartitions.WithLabelValues(strconv.Itoa(int(p))).Set(1) | |||
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If a partition becomes un-owned, do we have a place to set this back to 0?
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I may be wrong, but I think't we can leverage on Prometheus staleness. If the metric has not been updated in the past 5 minutes then it won't show up
mapno
reviewed
Apr 25, 2025
mapno
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Apr 25, 2025
mapno
approved these changes
May 26, 2025
knylander-grafana
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Jun 2, 2025
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What this PR does:
It adds a new metric to track the partitions owned by a blockbuilder. This will allow us to identify problems with unassigned partitions.
Checklist
CHANGELOG.mdupdated - the order of entries should be[CHANGE],[FEATURE],[ENHANCEMENT],[BUGFIX]