changelog

Signed-off-by: SungJin1212 <tjdwls1201@gmail.com>

Author: SungJin1212

CHANGELOG.md

@@ -31,6 +31,7 @@
 * [ENHANCEMENT] Distributor: Added `cortex_distributor_received_histogram_buckets` metric to track number of buckets in received native histogram samples before validation, per user. #7569
 * [ENHANCEMENT] Distributor: Add `WrappedHistogram` with configurable size limit (`-validation.max-native-histogram-size-bytes`) to cap native histogram protobuf size before unmarshalling. #7570
 * [ENHANCEMENT] Ingester: Add lazy regex evaluation on head postings cache miss. Defers expensive regex matchers on high-cardinality labels to per-series filtering when a selective equality matcher already narrows the result set. Configured via `-blocks-storage.expanded_postings_cache.head.lazy-matcher-max-cardinality` (disabled by default). #7553
+* [ENHANCEMENT] Upgrade prometheus version to v3.9.1. #7535
 * [BUGFIX] Querier: Fix queryWithRetry and labelsWithRetry returning (nil, nil) on cancelled context by propagating ctx.Err(). #7370
 * [BUGFIX] Metrics Helper: Fix non-deterministic bucket order in merged histograms by sorting buckets after map iteration, matching Prometheus client library behavior. #7380
 * [BUGFIX] Distributor: Return HTTP 401 Unauthorized when tenant ID resolution fails in the Prometheus Remote Write 2.0 path. #7389