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server,mcs: pass split reason to scheduling service #10652
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,255 @@ | ||
| // Copyright 2026 TiKV Project Authors. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package server | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "net/http" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/prometheus/client_golang/prometheus" | ||
| "github.com/stretchr/testify/require" | ||
| "go.uber.org/goleak" | ||
| "google.golang.org/grpc" | ||
|
|
||
| "github.com/pingcap/kvproto/pkg/metapb" | ||
| "github.com/pingcap/kvproto/pkg/pdpb" | ||
| "github.com/pingcap/kvproto/pkg/schedulingpb" | ||
|
|
||
| "github.com/tikv/pd/pkg/cache" | ||
| "github.com/tikv/pd/pkg/core" | ||
| "github.com/tikv/pd/pkg/mcs/scheduling/server/config" | ||
| "github.com/tikv/pd/pkg/mcs/utils/constant" | ||
| "github.com/tikv/pd/pkg/schedule/affinity" | ||
| sc "github.com/tikv/pd/pkg/schedule/config" | ||
| "github.com/tikv/pd/pkg/schedule/hbstream" | ||
| "github.com/tikv/pd/pkg/storage/endpoint" | ||
| "github.com/tikv/pd/pkg/storage/kv" | ||
| "github.com/tikv/pd/pkg/utils/keypath" | ||
| "github.com/tikv/pd/pkg/utils/keyutil" | ||
| "github.com/tikv/pd/pkg/utils/testutil" | ||
| ) | ||
|
|
||
| type captureHeartbeatStream struct { | ||
| ch chan core.RegionHeartbeatResponse | ||
| } | ||
|
|
||
| func (s *captureHeartbeatStream) Send(resp core.RegionHeartbeatResponse) error { | ||
| s.ch <- resp | ||
| return nil | ||
| } | ||
|
|
||
| type splitScatterPDClient struct { | ||
| pdpb.PDClient | ||
| next uint64 | ||
| } | ||
|
|
||
| func (c *splitScatterPDClient) AllocID(_ context.Context, req *pdpb.AllocIDRequest, _ ...grpc.CallOption) (*pdpb.AllocIDResponse, error) { | ||
| count := req.GetCount() | ||
| if count == 0 { | ||
| count = 1 | ||
| } | ||
| c.next += uint64(count) | ||
| return &pdpb.AllocIDResponse{ | ||
| Header: &pdpb.ResponseHeader{}, | ||
| Id: c.next - 1, | ||
| Count: count, | ||
| }, nil | ||
| } | ||
|
|
||
| func TestMain(m *testing.M) { | ||
| goleak.VerifyTestMain(m, testutil.LeakOptions...) | ||
| } | ||
|
|
||
| func waitHeartbeatStreamBound(t *testing.T, hbStreams *hbstream.HeartbeatStreams, region *core.RegionInfo, stream *captureHeartbeatStream) { | ||
| t.Helper() | ||
|
|
||
| ticker := time.NewTicker(10 * time.Millisecond) | ||
| defer ticker.Stop() | ||
| timeout := time.After(time.Second) | ||
| for { | ||
| hbStreams.SendMsg(region, &hbstream.Operation{}) | ||
| select { | ||
| case <-stream.ch: | ||
| for { | ||
| select { | ||
| case <-stream.ch: | ||
| default: | ||
| return | ||
| } | ||
| } | ||
| case <-ticker.C: | ||
| case <-timeout: | ||
| require.FailNow(t, "expected heartbeat stream to be bound") | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func TestAskBatchSplitRejectsAffinityAutoSplit(t *testing.T) { | ||
| re := require.New(t) | ||
|
|
||
| svc, cluster, stream := newTestSchedulingServiceForSplit(t) | ||
|
|
||
| region := newAffinitySplitTestRegion() | ||
| cluster.PutRegion(region) | ||
| err := cluster.GetAffinityManager().CreateAffinityGroups([]affinity.GroupKeyRanges{ | ||
| { | ||
| GroupID: "g1", | ||
| KeyRanges: []keyutil.KeyRange{ | ||
| {StartKey: []byte("a"), EndKey: []byte("z")}, | ||
| }, | ||
| }, | ||
| }) | ||
| re.NoError(err) | ||
| _, err = cluster.GetAffinityManager().UpdateAffinityGroupPeers("g1", 1, []uint64{1, 2, 3}) | ||
| re.NoError(err) | ||
| hbStreams := cluster.GetCoordinator().GetHeartbeatStreams() | ||
| hbStreams.BindStream(1, stream) | ||
| waitHeartbeatStreamBound(t, hbStreams, region, stream) | ||
|
|
||
| resp, err := svc.AskBatchSplit(context.Background(), &schedulingpb.AskBatchSplitRequest{ | ||
| Region: region.GetMeta(), | ||
| SplitCount: 1, | ||
| Reason: pdpb.SplitReason_LOAD, | ||
| }) | ||
| re.NoError(err) | ||
| re.Equal(schedulingpb.ErrorType_UNKNOWN, resp.GetHeader().GetError().GetType()) | ||
| re.Contains(resp.GetHeader().GetError().GetMessage(), "cannot split affinity region") | ||
| re.Empty(resp.GetIds()) | ||
|
|
||
| select { | ||
| case msg := <-stream.ch: | ||
| heartbeatResp, ok := msg.(*schedulingpb.RegionHeartbeatResponse) | ||
| re.True(ok) | ||
| re.Equal(region.GetID(), heartbeatResp.GetRegionId()) | ||
| re.NotNil(heartbeatResp.GetChangeSplit()) | ||
| re.False(heartbeatResp.GetChangeSplit().GetAutoSplitEnabled()) | ||
| case <-time.After(time.Second): | ||
| re.Fail("expected ChangeSplit heartbeat response") | ||
| } | ||
| } | ||
|
|
||
| func TestAskBatchSplitRecordsSplitScatterInSchedulingService(t *testing.T) { | ||
| re := require.New(t) | ||
|
|
||
| svc, cluster, _ := newTestSchedulingServiceForSplit(t) | ||
| cluster.SwitchPDLeader(&splitScatterPDClient{next: 1000}) | ||
|
|
||
| region := newAffinitySplitTestRegion() | ||
| cluster.PutRegion(region) | ||
| resp, err := svc.AskBatchSplit(context.Background(), &schedulingpb.AskBatchSplitRequest{ | ||
| Region: region.GetMeta(), | ||
| SplitCount: 1, | ||
| Reason: pdpb.SplitReason_LOAD, | ||
| }) | ||
| re.NoError(err) | ||
| re.Empty(resp.GetHeader().GetError()) | ||
| re.Len(resp.GetIds(), 1) | ||
|
|
||
| re.Equal(float64(2), splitScatterPendingMetricValue(t)) | ||
| } | ||
|
|
||
| func newTestSchedulingServiceForSplit( | ||
| t *testing.T, | ||
| ) (*Service, *Cluster, *captureHeartbeatStream) { | ||
| re := require.New(t) | ||
| ctx, cancel := context.WithCancel(context.Background()) | ||
| t.Cleanup(cancel) | ||
| oldClusterID := keypath.ClusterID() | ||
| keypath.SetClusterID(1) | ||
| t.Cleanup(func() { | ||
| keypath.SetClusterID(oldClusterID) | ||
| }) | ||
| cfg, err := GenerateConfig(&config.Config{ | ||
| Name: "test-scheduling", | ||
| ListenAddr: "http://127.0.0.1:0", | ||
| AdvertiseListenAddr: "http://127.0.0.1:0", | ||
| BackendEndpoints: "http://127.0.0.1:2379", | ||
| }) | ||
| re.NoError(err) | ||
| cfg.Schedule.AffinityScheduleLimit = 4 | ||
| cfg.Schedule.MaxAffinityMergeRegionSize = 10 | ||
|
|
||
| basicCluster := core.NewBasicCluster() | ||
| for i := uint64(1); i <= 3; i++ { | ||
| basicCluster.PutStore(core.NewStoreInfo(&metapb.Store{ | ||
| Id: i, | ||
| Address: fmt.Sprintf("mock://tikv-%d", i), | ||
| State: metapb.StoreState_Up, | ||
| })) | ||
| } | ||
|
|
||
| storage := endpoint.NewStorageEndpoint(kv.NewMemoryKV(), nil) | ||
| hbStreams := hbstream.NewHeartbeatStreams(ctx, constant.SchedulingServiceName, basicCluster) | ||
| persistConfig := config.NewPersistConfig( | ||
| cfg, | ||
| cache.NewStringTTL(ctx, sc.DefaultGCInterval, sc.DefaultTTL), | ||
| ) | ||
| cluster, err := NewCluster( | ||
| ctx, | ||
| persistConfig, | ||
| storage, | ||
| basicCluster, | ||
| hbStreams, | ||
| make(chan struct{}), | ||
| http.DefaultClient, | ||
| "", | ||
| ) | ||
| re.NoError(err) | ||
|
|
||
| server := &Server{} | ||
| server.cluster.Store(cluster) | ||
| stream := &captureHeartbeatStream{ch: make(chan core.RegionHeartbeatResponse, 16)} | ||
| t.Cleanup(hbStreams.Close) | ||
| return &Service{Server: server}, cluster, stream | ||
| } | ||
|
|
||
| func newAffinitySplitTestRegion() *core.RegionInfo { | ||
| peers := []*metapb.Peer{ | ||
| {Id: 11, StoreId: 1}, | ||
| {Id: 22, StoreId: 2}, | ||
| {Id: 33, StoreId: 3}, | ||
| } | ||
| return core.NewRegionInfo(&metapb.Region{ | ||
| Id: 100, | ||
| StartKey: []byte("b"), | ||
| EndKey: []byte("y"), | ||
| Peers: peers, | ||
| RegionEpoch: &metapb.RegionEpoch{ConfVer: 1, Version: 1}, | ||
| }, peers[0], | ||
| core.SetApproximateSize(5), | ||
| core.SetApproximateKeys(int64(5*sc.RegionSizeToKeysRatio)), | ||
| ) | ||
| } | ||
|
|
||
| func splitScatterPendingMetricValue(t *testing.T) float64 { | ||
| t.Helper() | ||
| metricFamilies, err := prometheus.DefaultGatherer.Gather() | ||
| require.NoError(t, err) | ||
| for _, metricFamily := range metricFamilies { | ||
| if metricFamily.GetName() != "pd_checker_split_scatter_pending" { | ||
| continue | ||
| } | ||
| var value float64 | ||
| for _, metric := range metricFamily.GetMetric() { | ||
| value += metric.GetGauge().GetValue() | ||
| } | ||
| return value | ||
| } | ||
| require.FailNow(t, "split scatter pending metric not found") | ||
| return 0 | ||
| } | ||
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