Better master cache sticky size adjustment; enable dynconfig for master caches

2 files changed, 6 insertions, 2 deletions

diff --git a/yt/yt/core/misc/historic_usage_aggregator.cpp b/yt/yt/core/misc/historic_usage_aggregator.cpp
index 04b6d530d5..411a892070 100644
--- a/yt/yt/core/misc/historic_usage_aggregator.cpp
+++ b/yt/yt/core/misc/historic_usage_aggregator.cpp
@@ -54,7 +54,9 @@ void THistoricUsageAggregator::Reset()
 
 void THistoricUsageAggregator::UpdateAt(TInstant now, double value)
 {
-    YT_VERIFY(now >= LastExponentialMovingAverageUpdateTime_);
+    if (now < LastExponentialMovingAverageUpdateTime_) {
+        return;
+    }
 
     // If LastExponentialMovingAverageUpdateTime_ is zero, this is the first update (after most
     // recent reset) and we just want to leave EMA = 0.0, as if there was no previous usage.
diff --git a/yt/yt/core/misc/historic_usage_aggregator.h b/yt/yt/core/misc/historic_usage_aggregator.h
index 6d20d8d019..764e5f3338 100644
--- a/yt/yt/core/misc/historic_usage_aggregator.h
+++ b/yt/yt/core/misc/historic_usage_aggregator.h
@@ -57,6 +57,8 @@ class TAverageHistoricUsageAggregator
 {
 public:
     explicit TAverageHistoricUsageAggregator(TDuration period = TDuration::Seconds(1));
+    TAverageHistoricUsageAggregator(const TAverageHistoricUsageAggregator& other) = default;
+    TAverageHistoricUsageAggregator& operator=(const TAverageHistoricUsageAggregator& other) = default;
 
     void UpdateParameters(THistoricUsageAggregationParameters params);
 
@@ -65,7 +67,7 @@ public:
     void UpdateAt(TInstant now, double value);
 
 private:
-    const TDuration Period_;
+    TDuration Period_;
 
     TInstant IntervalStart_ = TInstant::Zero();
     double CurrentUsage_ = 0;