問題文
Three sets of data points arrive: the metric cpu.utilization with dimension hostname host1, the same metric with dimension source_host host1, and the same metric with dimension hostname host2. How many metric time series do these produce, and what determines that?
選択肢
- Three, but only because the metric types differ between them, and a shared metric name carrying differing dimension keys would still be counted as one series in the catalog.
- One, because all three share the same metric name and the dimensions are treated as descriptive labels that do not affect identity; the three streams land in one series and their values interleave.
- Three, because a metric time series is identified by the combination of metric name, metric type, and the exact set of dimension keys and values, so a different key or a different value produces a different series.
- Two, because the first and the second refer to the same physical host and the platform recognizes host1 as one entity regardless of which dimension key carries the name, while host2 is clearly a separate machine.