diff --git a/flow/DeterministicRandom.h b/flow/DeterministicRandom.h
index f2e23fefca..369bbef010 100644
--- a/flow/DeterministicRandom.h
+++ b/flow/DeterministicRandom.h
@@ -24,6 +24,8 @@
 
 #include <cinttypes>
 #include "flow/IRandom.h"
+#include "flow/Error.h"
+#include "flow/Trace.h"
 
 #include <random>
 
@@ -90,6 +92,14 @@ public:
 
 	uint32_t randomUInt32() { return gen64(); }
 
+	uint32_t randomSkewedUInt32(uint32_t min, uint32_t maxPlusOne) {
+		std::uniform_real_distribution<double> distribution( std::log(min), std::log(maxPlusOne-1) );
+		double logpower = distribution(random);
+		uint32_t loguniform = static_cast<uint32_t>( std::pow( 10, logpower ) );
+		// doubles can be imprecise, so let's make sure we don't violate an edge case.
+		return std::max(std::min(loguniform, maxPlusOne-1), min);
+	}
+
 	UID randomUniqueID() {
 		uint64_t x,y;
 		x = gen64();
diff --git a/flow/IRandom.h b/flow/IRandom.h
index 3d957a004d..c5d60cb01d 100644
--- a/flow/IRandom.h
+++ b/flow/IRandom.h
@@ -76,6 +76,7 @@ public:
 	virtual UID randomUniqueID() = 0;
 	virtual char randomAlphaNumeric()  = 0;
 	virtual std::string randomAlphaNumeric( int length ) = 0;
+	virtual uint32_t randomSkewedUInt32(uint32_t min, uint32_t maxPlusOne) = 0;
 	virtual uint64_t peek() const = 0;  // returns something that is probably different for different random states.  Deterministic (and idempotent) for a deterministic generator.
 
 	// The following functions have fixed implementations for now: