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master: broadcast new volume locations to clients to avoid possible racing condition
fix https://github.com/chrislusf/seaweedfs/issues/3220
This commit is contained in:
parent
52c44d646e
commit
96496d5286
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@ -52,8 +52,13 @@ func (ms *MasterServer) ProcessGrowRequest() {
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go func() {
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go func() {
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glog.V(1).Infoln("starting automatic volume grow")
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glog.V(1).Infoln("starting automatic volume grow")
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start := time.Now()
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start := time.Now()
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_, err := ms.vg.AutomaticGrowByType(req.Option, ms.grpcDialOption, ms.Topo, req.Count)
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newVidLocations, err := ms.vg.AutomaticGrowByType(req.Option, ms.grpcDialOption, ms.Topo, req.Count)
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glog.V(1).Infoln("finished automatic volume grow, cost ", time.Now().Sub(start))
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glog.V(1).Infoln("finished automatic volume grow, cost ", time.Now().Sub(start))
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if err == nil {
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for _, newVidLocation := range newVidLocations {
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ms.broadcastToClients(&master_pb.KeepConnectedResponse{VolumeLocation: newVidLocation})
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}
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}
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vl.DoneGrowRequest()
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vl.DoneGrowRequest()
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if req.ErrCh != nil {
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if req.ErrCh != nil {
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@ -3,6 +3,7 @@ package topology
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import (
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import (
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"encoding/json"
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"encoding/json"
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"fmt"
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"fmt"
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"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
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"math/rand"
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"math/rand"
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"sync"
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"sync"
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@ -77,42 +78,50 @@ func (vg *VolumeGrowth) findVolumeCount(copyCount int) (count int) {
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return
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return
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}
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}
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func (vg *VolumeGrowth) AutomaticGrowByType(option *VolumeGrowOption, grpcDialOption grpc.DialOption, topo *Topology, targetCount int) (count int, err error) {
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func (vg *VolumeGrowth) AutomaticGrowByType(option *VolumeGrowOption, grpcDialOption grpc.DialOption, topo *Topology, targetCount int) (result []*master_pb.VolumeLocation, err error) {
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if targetCount == 0 {
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if targetCount == 0 {
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targetCount = vg.findVolumeCount(option.ReplicaPlacement.GetCopyCount())
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targetCount = vg.findVolumeCount(option.ReplicaPlacement.GetCopyCount())
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}
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}
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count, err = vg.GrowByCountAndType(grpcDialOption, targetCount, option, topo)
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result, err = vg.GrowByCountAndType(grpcDialOption, targetCount, option, topo)
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if count > 0 && count%option.ReplicaPlacement.GetCopyCount() == 0 {
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if len(result) > 0 && len(result)%option.ReplicaPlacement.GetCopyCount() == 0 {
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return count, nil
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return result, nil
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}
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}
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return count, err
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return result, err
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}
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}
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func (vg *VolumeGrowth) GrowByCountAndType(grpcDialOption grpc.DialOption, targetCount int, option *VolumeGrowOption, topo *Topology) (counter int, err error) {
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func (vg *VolumeGrowth) GrowByCountAndType(grpcDialOption grpc.DialOption, targetCount int, option *VolumeGrowOption, topo *Topology) (result []*master_pb.VolumeLocation, err error) {
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vg.accessLock.Lock()
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vg.accessLock.Lock()
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defer vg.accessLock.Unlock()
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defer vg.accessLock.Unlock()
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for i := 0; i < targetCount; i++ {
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for i := 0; i < targetCount; i++ {
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if c, e := vg.findAndGrow(grpcDialOption, topo, option); e == nil {
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if res, e := vg.findAndGrow(grpcDialOption, topo, option); e == nil {
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counter += c
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result = append(result, res...)
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} else {
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} else {
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glog.V(0).Infof("create %d volume, created %d: %v", targetCount, counter, e)
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glog.V(0).Infof("create %d volume, created %d: %v", targetCount, len(result), e)
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return counter, e
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return result, e
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}
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}
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}
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}
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return
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return
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}
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}
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func (vg *VolumeGrowth) findAndGrow(grpcDialOption grpc.DialOption, topo *Topology, option *VolumeGrowOption) (int, error) {
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func (vg *VolumeGrowth) findAndGrow(grpcDialOption grpc.DialOption, topo *Topology, option *VolumeGrowOption) (result []*master_pb.VolumeLocation, err error) {
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servers, e := vg.findEmptySlotsForOneVolume(topo, option)
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servers, e := vg.findEmptySlotsForOneVolume(topo, option)
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if e != nil {
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if e != nil {
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return 0, e
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return nil, e
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}
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}
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vid, raftErr := topo.NextVolumeId()
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vid, raftErr := topo.NextVolumeId()
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if raftErr != nil {
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if raftErr != nil {
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return 0, raftErr
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return nil, raftErr
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}
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}
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err := vg.grow(grpcDialOption, topo, vid, option, servers...)
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if err = vg.grow(grpcDialOption, topo, vid, option, servers...); err == nil {
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return len(servers), err
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for _, server := range servers {
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result = append(result, &master_pb.VolumeLocation{
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Url: server.Url(),
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PublicUrl: server.PublicUrl,
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NewVids: []uint32{uint32(vid)},
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})
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}
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}
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return
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}
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}
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// 1. find the main data node
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// 1. find the main data node
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