use of com.alipay.sofa.jraft.rhea.ClusterStatsManager in project sofa-jraft by sofastack.
the class SplittingJudgeByApproximateKeysHandler method readMessage.
@Override
public void readMessage(final HandlerContext ctx, final RegionPingEvent event) throws Exception {
if (event.isReady()) {
return;
}
final MetadataStore metadataStore = event.getMetadataStore();
final RegionHeartbeatRequest request = event.getMessage();
final long clusterId = request.getClusterId();
final ClusterStatsManager clusterStatsManager = ClusterStatsManager.getInstance(clusterId);
clusterStatsManager.addOrUpdateRegionStats(request.getRegionStatsList());
final Set<Long> stores = metadataStore.unsafeGetStoreIds(clusterId);
if (stores == null || stores.isEmpty()) {
return;
}
if (clusterStatsManager.regionSize() >= stores.size()) {
// one store one region is perfect
return;
}
final Pair<Region, RegionStats> modelWorker = clusterStatsManager.findModelWorkerRegion();
if (!isSplitNeeded(request, modelWorker)) {
return;
}
LOG.info("[Cluster: {}] model worker region is: {}.", clusterId, modelWorker);
final Long newRegionId = metadataStore.createRegionId(clusterId);
final Instruction.RangeSplit rangeSplit = new Instruction.RangeSplit();
rangeSplit.setNewRegionId(newRegionId);
final Instruction instruction = new Instruction();
instruction.setRegion(modelWorker.getKey().copy());
instruction.setRangeSplit(rangeSplit);
event.addInstruction(instruction);
}
use of com.alipay.sofa.jraft.rhea.ClusterStatsManager in project sofa-jraft by sofastack.
the class RegionLeaderBalanceHandler method readMessage.
@Override
public void readMessage(final HandlerContext ctx, final RegionPingEvent event) throws Exception {
if (event.isReady()) {
return;
}
final MetadataStore metadataStore = event.getMetadataStore();
final RegionHeartbeatRequest request = event.getMessage();
final long clusterId = request.getClusterId();
final long storeId = request.getStoreId();
final ClusterStatsManager clusterStatsManager = ClusterStatsManager.getInstance(clusterId);
final List<Pair<Region, RegionStats>> regionStatsList = request.getRegionStatsList();
for (final Pair<Region, RegionStats> stats : regionStatsList) {
final Region region = stats.getKey();
clusterStatsManager.addOrUpdateLeader(storeId, region.getId());
}
// check if the modelWorker
final Pair<Set<Long>, Integer> modelWorkers = clusterStatsManager.findModelWorkerStores(1);
final Set<Long> modelWorkerStoreIds = modelWorkers.getKey();
final int modelWorkerLeaders = modelWorkers.getValue();
if (!modelWorkerStoreIds.contains(storeId)) {
return;
}
LOG.info("[Cluster: {}] model worker stores is: {}, it has {} leaders.", clusterId, modelWorkerStoreIds, modelWorkerLeaders);
for (final Pair<Region, RegionStats> pair : regionStatsList) {
final Region region = pair.getKey();
final List<Peer> peers = region.getPeers();
if (peers == null) {
continue;
}
final List<Endpoint> endpoints = Lists.transform(peers, Peer::getEndpoint);
final Map<Long, Endpoint> storeIds = metadataStore.unsafeGetStoreIdsByEndpoints(clusterId, endpoints);
// find lazyWorkers
final List<Pair<Long, Integer>> lazyWorkers = clusterStatsManager.findLazyWorkerStores(storeIds.keySet());
if (lazyWorkers.isEmpty()) {
return;
}
for (int i = lazyWorkers.size() - 1; i >= 0; i--) {
final Pair<Long, Integer> worker = lazyWorkers.get(i);
if (modelWorkerLeaders - worker.getValue() <= 1) {
// no need to transfer
lazyWorkers.remove(i);
}
}
if (lazyWorkers.isEmpty()) {
continue;
}
final Pair<Long, Integer> laziestWorker = tryToFindLaziestWorker(clusterId, metadataStore, lazyWorkers);
if (laziestWorker == null) {
continue;
}
final Long lazyWorkerStoreId = laziestWorker.getKey();
LOG.info("[Cluster: {}], lazy worker store is: {}, it has {} leaders.", clusterId, lazyWorkerStoreId, laziestWorker.getValue());
final Instruction.TransferLeader transferLeader = new Instruction.TransferLeader();
transferLeader.setMoveToStoreId(lazyWorkerStoreId);
transferLeader.setMoveToEndpoint(storeIds.get(lazyWorkerStoreId));
final Instruction instruction = new Instruction();
instruction.setRegion(region.copy());
instruction.setTransferLeader(transferLeader);
event.addInstruction(instruction);
LOG.info("[Cluster: {}], send 'instruction.transferLeader': {} to region: {}.", clusterId, instruction, region);
// Only do one thing at a time
break;
}
}
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