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fix error: concurrent map writes when add or remove cluster node

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This commit is contained in:
石昌林 2022-06-28 10:06:04 +08:00
parent 4b1f48a399
commit e1b94eb6b9
2 changed files with 40 additions and 4 deletions
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10
weed/cluster/cluster.go
View File

@ -46,8 +46,6 @@ func NewCluster() *Cluster {
}
func (cluster *Cluster) getFilers(filerGroup FilerGroup, createIfNotFound bool) *Filers {
cluster.filersLock.Lock()
defer cluster.filersLock.Unlock()
filers, found := cluster.filerGroup2filers[filerGroup]
if !found && createIfNotFound {
filers = &Filers{
@ -63,6 +61,8 @@ func (cluster *Cluster) AddClusterNode(ns, nodeType string, address pb.ServerAdd
filerGroup := FilerGroup(ns)
switch nodeType {
case FilerType:
cluster.filersLock.Lock()
defer cluster.filersLock.Unlock()
filers := cluster.getFilers(filerGroup, true)
if existingNode, found := filers.filers[address]; found {
existingNode.counter++
@ -115,6 +115,8 @@ func (cluster *Cluster) RemoveClusterNode(ns string, nodeType string, address pb
filerGroup := FilerGroup(ns)
switch nodeType {
case FilerType:
cluster.filersLock.Lock()
defer cluster.filersLock.Unlock()
filers := cluster.getFilers(filerGroup, false)
if filers == nil {
return nil
@ -165,12 +167,12 @@ func (cluster *Cluster) RemoveClusterNode(ns string, nodeType string, address pb
func (cluster *Cluster) ListClusterNode(filerGroup FilerGroup, nodeType string) (nodes []*ClusterNode) {
switch nodeType {
case FilerType:
cluster.filersLock.RLock()
defer cluster.filersLock.RUnlock()
filers := cluster.getFilers(filerGroup, false)
if filers == nil {
return
}
cluster.filersLock.RLock()
defer cluster.filersLock.RUnlock()
for _, node := range filers.filers {
nodes = append(nodes, node)
}

34
weed/cluster/cluster_test.go
View File

@ -3,6 +3,8 @@ package cluster
import (
"github.com/chrislusf/seaweedfs/weed/pb"
"github.com/stretchr/testify/assert"
"strconv"
"sync"
"testing"
)
@ -45,3 +47,35 @@ func TestClusterAddRemoveNodes(t *testing.T) {
c.RemoveClusterNode("", "filer", pb.ServerAddress("111:1"))
}
func TestConcurrentAddRemoveNodes(t *testing.T) {
c := NewCluster()
var wg sync.WaitGroup
for i := 0; i < 50; i++ {
wg.Add(1)
go func(i int) {
defer wg.Done()
address := strconv.Itoa(i)
c.AddClusterNode("", "filer", pb.ServerAddress(address), "23.45")
}(i)
}
wg.Wait()
for i := 0; i < 50; i++ {
wg.Add(1)
go func(i int) {
defer wg.Done()
address := strconv.Itoa(i)
node := c.RemoveClusterNode("", "filer", pb.ServerAddress(address))
if len(node) == 0 {
t.Errorf("TestConcurrentAddRemoveNodes: node[%s] not found", address)
return
} else if node[0].ClusterNodeUpdate.Address != address {
t.Errorf("TestConcurrentAddRemoveNodes: expect:%s, actual:%s", address, node[0].ClusterNodeUpdate.Address)
return
}
}(i)
}
wg.Wait()
}