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copyset schedule select copyset random #1811

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12 changes: 12 additions & 0 deletions curvefs/src/mds/schedule/copysetSchedule.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -218,6 +218,12 @@ int CopySetScheduler::CheckAndBalanceZoneByMetaserverUsage(ZoneIdType zoneId) {

std::vector<CopySetInfo> copysetVector =
topo_->GetCopySetInfosInMetaServer(sourceId);

// TODO(chenwei): select copyset which uses less disk
thread_local static std::random_device rd;
thread_local static std::mt19937 randomGenerator(rd());
std::shuffle(copysetVector.begin(), copysetVector.end(),
randomGenerator);
for (const auto &copyset : copysetVector) {
if (!IsCopysetCanTransfer(copyset)) {
continue;
Expand Down Expand Up @@ -276,6 +282,12 @@ int CopySetScheduler::CheckAndBalanceZoneByCopysetNum(ZoneIdType zoneId) {

std::vector<CopySetInfo> copysetVector =
topo_->GetCopySetInfosInMetaServer(sourceId);

// TODO(chenwei): select copyset which uses less disk
thread_local static std::random_device rd;
thread_local static std::mt19937 randomGenerator(rd());
std::shuffle(copysetVector.begin(), copysetVector.end(),
randomGenerator);
for (const auto &copyset : copysetVector) {
if (!IsCopysetCanTransfer(copyset)) {
continue;
Expand Down