prompb: Add note about experimental state of native histograms

Signed-off-by: beorn7 <beorn@grafana.com>
2 years ago · 430bdc9dd0
1 changed files with 1 additions and 0 deletions
--- a/prompb/io/prometheus/client/metrics.proto
+++ b/prompb/io/prometheus/client/metrics.proto
@ -75,6 +75,7 @@ message Histogram {
  repeated Bucket bucket    = 3; // Ordered in increasing order of upper_bound, +Inf bucket is optional.

  // Everything below here is for native histograms (also known as sparse histograms).
+  // Native histograms are an experimental feature without stability guarantees.

  // schema defines the bucket schema. Currently, valid numbers are -4 <= n <= 8.
  // They are all for base-2 bucket schemas, where 1 is a bucket boundary in each case, and