sqlstreams.metrics.collector.completed_timestamp [SQL0100]

The Unix-second timestamp recorded after a complete metrics collection pass. Every snapshot read and measurement write must succeed first, including all concurrent stream collection. Startup and partial passes do not refresh it. If the completion write fails, the pass returns an error.

The series has no attributes. Read it through client.System().Metrics().CollectorCompletedTimestamp().Latest(ctx). For example, a pass that completes at 10:02 UTC records that instant as Unix seconds; a pass that fails while reading a stream at 10:03 leaves that value unchanged.

No retained value means no retained completion evidence. Retention can remove an old completion; it does not become a healthy zero. The collector-progress alert combines completion with manager lease history to avoid counting stopped hours toward pending.