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docs: mention that quantiles can't be used in sharded mode

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https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4942
Signed-off-by: hagen1778 <roman@victoriametrics.com>
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hagen1778 2023-09-07 10:06:09 +02:00
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docs/stream-aggregation.md
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@ -559,6 +559,9 @@ The `phi` must be in the range `[0..1]`, where `0` means `0th` percentile, while
The results of `quantiles(phi1, ..., phiN)` with aggregation interval of `1m` The results of `quantiles(phi1, ..., phiN)` with aggregation interval of `1m`
is equal to the `quantiles_over_time("quantile", phi1, ..., phiN, some_histogram_bucket[1m])` query. is equal to the `quantiles_over_time("quantile", phi1, ..., phiN, some_histogram_bucket[1m])` query.
Please note, `quantiles` aggregation won't produce correct results when vmagent is in [cluster mode](#cluster-mode)
since percentiles should be calculated only on the whole matched data set.
## Aggregating by labels ## Aggregating by labels
All the labels for the input metrics are preserved by default in the output metrics. For example, All the labels for the input metrics are preserved by default in the output metrics. For example,