Fix non-deterministic error

fdbserver/RestoreLoader.actor.h

@@ -84,6 +84,7 @@ struct RestoreLoaderData : RestoreRoleData, public ReferenceCounted<RestoreLoade
 		numSampledMutations = 0;
 		processedFileParams.clear();
 		kvOpsPerLP.clear();
+		sampleMutations.clear();
 	}
 
 	// Only get the appliers that are responsible for a range

fdbserver/RestoreMaster.actor.cpp

@@ -364,12 +364,14 @@ void splitKeyRangeForAppliers(Reference<RestoreMasterData> self) {
 	std::vector<Key> keyrangeSplitter;
 	keyrangeSplitter.push_back(normalKeys.begin); // First slot
 	double cumulativeSize = slotSize;
+	TraceEvent("FastRestore").detail("VersionBatch", self->batchIndex).detail("SamplingSize", self->samplesSize);
 	while (cumulativeSize < self->samplesSize) {
 		IndexedSet<Key, int64_t>::iterator lowerBound = self->samples.index(cumulativeSize);
 		if (lowerBound == self->samples.end()) {
 			break;
 		}
 		keyrangeSplitter.push_back(*lowerBound);
+		TraceEvent("FastRestore").detail("VersionBatch", self->batchIndex).detail("CumulativeSize", cumulativeSize).detail("SlotSize", slotSize);
 		cumulativeSize += slotSize;
 	}
 	if (keyrangeSplitter.size() < numAppliers) {
@@ -491,6 +493,8 @@ ACTOR static Future<Void> initializeVersionBatch(Reference<RestoreMasterData> se
 	}
 	wait(sendBatchRequests(&RestoreLoaderInterface::initVersionBatch, self->loadersInterf, requestsToLoaders));
 
+	self->resetPerVersionBatch();
+
 	return Void();
 }
 

fdbserver/RestoreMaster.actor.h

@@ -77,6 +77,7 @@ struct RestoreMasterData : RestoreRoleData, public ReferenceCounted<RestoreMaste
 	~RestoreMasterData() = default;
 
 	void resetPerVersionBatch() {
+		TraceEvent("FastRestore").detail("RestoreMaster", "ResetPerVersionBatch").detail("VersionBatchIndex", batchIndex);
 		samplesSize = 0;
 		samples.clear();
 	}