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meta_partition.go
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meta_partition.go
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// Copyright 2018 The Chubao 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 master
import (
"sync"
"fmt"
"github.com/chubaofs/chubaofs/proto"
"github.com/chubaofs/chubaofs/util/errors"
"github.com/chubaofs/chubaofs/util/log"
"math"
"strings"
"time"
)
// MetaReplica defines the replica of a meta partition
type MetaReplica struct {
Addr string
start uint64 // lower bound of the inode id
end uint64 // upper bound of the inode id
nodeID uint64
MaxInodeID uint64
InodeCount uint64
DentryCount uint64
ReportTime int64
Status int8 // unavailable, readOnly, readWrite
IsLeader bool
metaNode *MetaNode
}
// MetaPartition defines the structure of a meta partition
type MetaPartition struct {
PartitionID uint64
Start uint64
End uint64
MaxInodeID uint64
InodeCount uint64
DentryCount uint64
Replicas []*MetaReplica
ReplicaNum uint8
Status int8
IsRecover bool
volID uint64
volName string
Hosts []string
Peers []proto.Peer
OfflinePeerID uint64
MissNodes map[string]int64
LoadResponse []*proto.MetaPartitionLoadResponse
offlineMutex sync.RWMutex
sync.RWMutex
}
func newMetaReplica(start, end uint64, metaNode *MetaNode) (mr *MetaReplica) {
mr = &MetaReplica{start: start, end: end, nodeID: metaNode.ID, Addr: metaNode.Addr}
mr.metaNode = metaNode
mr.ReportTime = time.Now().Unix()
return
}
func newMetaPartition(partitionID, start, end uint64, replicaNum uint8, volName string, volID uint64) (mp *MetaPartition) {
mp = &MetaPartition{PartitionID: partitionID, Start: start, End: end, volName: volName, volID: volID}
mp.ReplicaNum = replicaNum
mp.Replicas = make([]*MetaReplica, 0)
mp.Status = proto.Unavailable
mp.MissNodes = make(map[string]int64, 0)
mp.Peers = make([]proto.Peer, 0)
mp.Hosts = make([]string, 0)
mp.LoadResponse = make([]*proto.MetaPartitionLoadResponse, 0)
return
}
func (mp *MetaPartition) setPeers(peers []proto.Peer) {
mp.Peers = peers
}
func (mp *MetaPartition) setHosts(hosts []string) {
mp.Hosts = hosts
}
func (mp *MetaPartition) hostsToString() (hosts string) {
return strings.Join(mp.Hosts, underlineSeparator)
}
func (mp *MetaPartition) addReplica(mr *MetaReplica) {
for _, m := range mp.Replicas {
if m.Addr == mr.Addr {
return
}
}
mp.Replicas = append(mp.Replicas, mr)
return
}
func (mp *MetaPartition) removeReplica(mr *MetaReplica) {
var newReplicas []*MetaReplica
for _, m := range mp.Replicas {
if m.Addr == mr.Addr {
continue
}
newReplicas = append(newReplicas, m)
}
mp.Replicas = newReplicas
return
}
func (mp *MetaPartition) removeReplicaByAddr(addr string) {
var newReplicas []*MetaReplica
for _, m := range mp.Replicas {
if m.Addr == addr {
continue
}
newReplicas = append(newReplicas, m)
}
mp.Replicas = newReplicas
return
}
func (mp *MetaPartition) updateInodeIDRangeForAllReplicas() {
for _, mr := range mp.Replicas {
mr.end = mp.End
}
}
//canSplit caller must be add lock
func (mp *MetaPartition) canSplit(end uint64) (err error) {
if end < mp.Start {
err = fmt.Errorf("end[%v] less than mp.start[%v]", end, mp.Start)
return
}
// overflow
if end > (defaultMaxMetaPartitionInodeID - defaultMetaPartitionInodeIDStep) {
msg := fmt.Sprintf("action[updateInodeIDRange] vol[%v] partitionID[%v] nextStart[%v] "+
"to prevent overflow ,not update end", mp.volName, mp.PartitionID, end)
log.LogWarn(msg)
err = fmt.Errorf(msg)
return
}
if end <= mp.MaxInodeID {
err = fmt.Errorf("next meta partition start must be larger than %v", mp.MaxInodeID)
return
}
if _, err = mp.getMetaReplicaLeader(); err != nil {
log.LogWarnf("action[updateInodeIDRange] vol[%v] id[%v] no leader", mp.volName, mp.PartitionID)
return
}
return
}
func (mp *MetaPartition) addUpdateMetaReplicaTask(c *Cluster) (err error) {
tasks := make([]*proto.AdminTask, 0)
t := mp.createTaskToUpdateMetaReplica(c.Name, mp.PartitionID, mp.End)
//if no leader,don't update end
if t == nil {
err = proto.ErrNoLeader
return
}
tasks = append(tasks, t)
c.addMetaNodeTasks(tasks)
log.LogWarnf("action[addUpdateMetaReplicaTask] partitionID[%v] end[%v] success", mp.PartitionID, mp.End)
return
}
func (mp *MetaPartition) checkEnd(c *Cluster, maxPartitionID uint64) {
if mp.PartitionID < maxPartitionID {
return
}
vol, err := c.getVol(mp.volName)
if err != nil {
log.LogWarnf("action[checkEnd] vol[%v] not exist", mp.volName)
return
}
mp.Lock()
defer mp.Unlock()
curMaxPartitionID := vol.maxPartitionID()
if mp.PartitionID != curMaxPartitionID {
log.LogWarnf("action[checkEnd] partition[%v] not max partition[%v]", mp.PartitionID, curMaxPartitionID)
return
}
if _, err = mp.getMetaReplicaLeader(); err != nil {
log.LogWarnf("action[checkEnd] partition[%v] no leader", mp.PartitionID)
return
}
if mp.End != defaultMaxMetaPartitionInodeID {
oldEnd := mp.End
mp.End = defaultMaxMetaPartitionInodeID
if err := c.syncUpdateMetaPartition(mp); err != nil {
mp.End = oldEnd
log.LogErrorf("action[checkEnd] partitionID[%v] err[%v]", mp.PartitionID, err)
return
}
if err = mp.addUpdateMetaReplicaTask(c); err != nil {
mp.End = oldEnd
}
}
log.LogDebugf("action[checkEnd] partitionID[%v] end[%v]", mp.PartitionID, mp.End)
}
func (mp *MetaPartition) getMetaReplica(addr string) (mr *MetaReplica, err error) {
for _, mr = range mp.Replicas {
if mr.Addr == addr {
return
}
}
return nil, metaReplicaNotFound(addr)
}
func (mp *MetaPartition) removeMissingReplica(addr string) {
if _, ok := mp.MissNodes[addr]; ok {
delete(mp.MissNodes, addr)
}
}
func (mp *MetaPartition) checkLeader() {
mp.Lock()
defer mp.Unlock()
for _, mr := range mp.Replicas {
if !mr.isActive() {
mr.IsLeader = false
}
}
return
}
func (mp *MetaPartition) checkStatus(clusterID string, writeLog bool, replicaNum int, maxPartitionID uint64) (doSplit bool) {
mp.Lock()
defer mp.Unlock()
liveReplicas := mp.getLiveReplicas()
if len(liveReplicas) <= replicaNum/2 {
mp.Status = proto.Unavailable
} else {
mr, err := mp.getMetaReplicaLeader()
if err != nil {
mp.Status = proto.Unavailable
}
mp.Status = mr.Status
for _, replica := range liveReplicas {
if replica.Status == proto.ReadOnly {
mp.Status = proto.ReadOnly
}
if mr.metaNode == nil {
continue
}
if !mr.metaNode.reachesThreshold() && mp.InodeCount < defaultMetaPartitionInodeIDStep {
continue
}
if mp.PartitionID == maxPartitionID {
msg := fmt.Sprintf("split[checkStatus] need split,id:%v,status:%v,replicaNum:%v,InodeCount:%v",
mp.PartitionID, mp.Status, mp.ReplicaNum, mp.InodeCount)
log.LogInfo(msg)
doSplit = true
} else {
if mr.metaNode.reachesThreshold() || mp.End-mp.MaxInodeID > 2*defaultMetaPartitionInodeIDStep {
msg := fmt.Sprintf("split[checkStatus],change state,id:%v,status:%v,replicaNum:%v,replicas:%v,persistenceHosts:%v, inodeCount:%v, MaxInodeID:%v, start:%v, end:%v",
mp.PartitionID, mp.Status, mp.ReplicaNum, len(liveReplicas), mp.Hosts, mp.InodeCount, mp.MaxInodeID, mp.Start, mp.End)
log.LogInfo(msg)
mp.Status = proto.ReadOnly
}
}
}
}
if mp.PartitionID >= maxPartitionID && mp.Status == proto.ReadOnly {
mp.Status = proto.ReadWrite
}
if writeLog && len(liveReplicas) != int(mp.ReplicaNum) {
msg := fmt.Sprintf("action[checkMPStatus],id:%v,status:%v,replicaNum:%v,replicas:%v,persistenceHosts:%v",
mp.PartitionID, mp.Status, mp.ReplicaNum, len(liveReplicas), mp.Hosts)
log.LogInfo(msg)
Warn(clusterID, msg)
}
return
}
func (mp *MetaPartition) getMetaReplicaLeader() (mr *MetaReplica, err error) {
for _, mr = range mp.Replicas {
if mr.IsLeader {
return
}
}
err = proto.ErrNoLeader
return
}
func (mp *MetaPartition) checkReplicaNum(c *Cluster, volName string, replicaNum uint8) {
mp.RLock()
defer mp.RUnlock()
if mp.ReplicaNum != replicaNum {
msg := fmt.Sprintf("FIX MetaPartition replicaNum clusterID[%v] vol[%v] replica num[%v],current num[%v]",
c.Name, volName, replicaNum, mp.ReplicaNum)
Warn(c.Name, msg)
}
}
func (mp *MetaPartition) removeIllegalReplica() (excessAddr string, t *proto.AdminTask, err error) {
mp.RLock()
defer mp.RUnlock()
for _, mr := range mp.Replicas {
if !contains(mp.Hosts, mr.Addr) {
t = mr.createTaskToDeleteReplica(mp.PartitionID)
err = proto.ErrIllegalMetaReplica
break
}
}
return
}
func (mp *MetaPartition) missingReplicaAddrs() (lackAddrs []string) {
mp.RLock()
defer mp.RUnlock()
var liveReplicas []string
for _, mr := range mp.Replicas {
liveReplicas = append(liveReplicas, mr.Addr)
}
for _, host := range mp.Hosts {
if !contains(liveReplicas, host) {
lackAddrs = append(lackAddrs, host)
break
}
}
return
}
func (mp *MetaPartition) updateMetaPartition(mgr *proto.MetaPartitionReport, metaNode *MetaNode) {
if !contains(mp.Hosts, metaNode.Addr) {
return
}
mp.Lock()
defer mp.Unlock()
mr, err := mp.getMetaReplica(metaNode.Addr)
if err != nil {
mr = newMetaReplica(mp.Start, mp.End, metaNode)
mp.addReplica(mr)
}
mr.updateMetric(mgr)
mp.setMaxInodeID()
mp.setInodeCount()
mp.setDentryCount()
mp.removeMissingReplica(metaNode.Addr)
}
func (mp *MetaPartition) canBeOffline(nodeAddr string, replicaNum int) (err error) {
liveReplicas := mp.getLiveReplicas()
if len(liveReplicas) < int(mp.ReplicaNum/2+1) {
err = proto.ErrNoEnoughReplica
return
}
liveAddrs := mp.getLiveReplicasAddr(liveReplicas)
if len(liveReplicas) == (replicaNum/2+1) && contains(liveAddrs, nodeAddr) {
err = fmt.Errorf("live replicas num will be less than majority after offline nodeAddr: %v", nodeAddr)
return
}
return
}
// Check if there is a replica missing or not.
func (mp *MetaPartition) hasMissingOneReplica(replicaNum int) (err error) {
hostNum := len(mp.Replicas)
if hostNum <= replicaNum-1 {
log.LogError(fmt.Sprintf("action[%v],partitionID:%v,err:%v",
"hasMissingOneReplica", mp.PartitionID, proto.ErrHasOneMissingReplica))
err = proto.ErrHasOneMissingReplica
}
return
}
func (mp *MetaPartition) getLiveReplicasAddr(liveReplicas []*MetaReplica) (addrs []string) {
addrs = make([]string, 0)
for _, mr := range liveReplicas {
addrs = append(addrs, mr.Addr)
}
return
}
func (mp *MetaPartition) getLiveReplicas() (liveReplicas []*MetaReplica) {
liveReplicas = make([]*MetaReplica, 0)
for _, mr := range mp.Replicas {
if mr.isActive() {
liveReplicas = append(liveReplicas, mr)
}
}
return
}
func (mp *MetaPartition) persistToRocksDB(action, volName string, newHosts []string, newPeers []proto.Peer, c *Cluster) (err error) {
oldHosts := make([]string, len(mp.Hosts))
copy(oldHosts, mp.Hosts)
oldPeers := make([]proto.Peer, len(mp.Peers))
copy(oldPeers, mp.Peers)
mp.Hosts = newHosts
mp.Peers = newPeers
if err = c.syncUpdateMetaPartition(mp); err != nil {
mp.Hosts = oldHosts
mp.Peers = oldPeers
log.LogWarnf("action[%v_persist] failed,vol[%v] partitionID:%v old hosts:%v new hosts:%v oldPeers:%v newPeers:%v",
action, volName, mp.PartitionID, mp.Hosts, newHosts, mp.Peers, newPeers)
return
}
log.LogWarnf("action[%v_persist] success,vol[%v] partitionID:%v old hosts:%v new hosts:%v oldPeers:%v newPeers:%v ",
action, volName, mp.PartitionID, oldHosts, mp.Hosts, oldPeers, mp.Peers)
return
}
func (mp *MetaPartition) getActiveAddrs() (liveAddrs []string) {
liveAddrs = make([]string, 0)
for _, mr := range mp.Replicas {
if mr.isActive() {
liveAddrs = append(liveAddrs, mr.Addr)
}
}
return liveAddrs
}
func (mp *MetaPartition) isMissingReplica(addr string) bool {
return !contains(mp.getActiveAddrs(), addr)
}
func (mp *MetaPartition) shouldReportMissingReplica(addr string, interval int64) (isWarn bool) {
lastWarningTime, ok := mp.MissNodes[addr]
if !ok {
isWarn = true
mp.MissNodes[addr] = time.Now().Unix()
} else if (time.Now().Unix() - lastWarningTime) > interval {
isWarn = true
mp.MissNodes[addr] = time.Now().Unix()
}
return false
}
func (mp *MetaPartition) reportMissingReplicas(clusterID, leaderAddr string, seconds, interval int64) {
mp.Lock()
defer mp.Unlock()
for _, replica := range mp.Replicas {
// reduce the alarm frequency
if contains(mp.Hosts, replica.Addr) && replica.isMissing() && mp.shouldReportMissingReplica(replica.Addr, interval) {
metaNode := replica.metaNode
var (
lastReportTime time.Time
)
isActive := true
if metaNode != nil {
lastReportTime = metaNode.ReportTime
isActive = metaNode.IsActive
}
msg := fmt.Sprintf("action[reportMissingReplicas], clusterID[%v] volName[%v] partition:%v on Node:%v "+
"miss time > :%v vlocLastRepostTime:%v dnodeLastReportTime:%v nodeisActive:%v",
clusterID, mp.volName, mp.PartitionID, replica.Addr, seconds, replica.ReportTime, lastReportTime, isActive)
Warn(clusterID, msg)
msg = fmt.Sprintf("decommissionMetaPartitionURL is http://%v/dataPartition/decommission?id=%v&addr=%v", leaderAddr, mp.PartitionID, replica.Addr)
Warn(clusterID, msg)
}
}
for _, addr := range mp.Hosts {
if mp.isMissingReplica(addr) && mp.shouldReportMissingReplica(addr, interval) {
msg := fmt.Sprintf("action[reportMissingReplicas],clusterID[%v] volName[%v] partition:%v on Node:%v "+
"miss time > %v ",
clusterID, mp.volName, mp.PartitionID, addr, defaultMetaPartitionTimeOutSec)
Warn(clusterID, msg)
msg = fmt.Sprintf("decommissionMetaPartitionURL is http://%v/dataPartition/decommission?id=%v&addr=%v", leaderAddr, mp.PartitionID, addr)
Warn(clusterID, msg)
}
}
}
func (mp *MetaPartition) replicaCreationTasks(clusterID, volName string) (tasks []*proto.AdminTask) {
var msg string
tasks = make([]*proto.AdminTask, 0)
if addr, _, err := mp.removeIllegalReplica(); err != nil {
msg = fmt.Sprintf("action[%v],clusterID[%v] metaPartition:%v excess replication"+
" on :%v err:%v persistenceHosts:%v",
deleteIllegalReplicaErr, clusterID, mp.PartitionID, addr, err.Error(), mp.Hosts)
log.LogWarn(msg)
}
if addrs := mp.missingReplicaAddrs(); addrs != nil {
msg = fmt.Sprintf("action[missingReplicaAddrs],clusterID[%v] metaPartition:%v lack replication"+
" on :%v Hosts:%v",
clusterID, mp.PartitionID, addrs, mp.Hosts)
Warn(clusterID, msg)
}
return
}
func (mp *MetaPartition) buildNewMetaPartitionTasks(specifyAddrs []string, peers []proto.Peer, volName string) (tasks []*proto.AdminTask) {
tasks = make([]*proto.AdminTask, 0)
hosts := make([]string, 0)
req := &proto.CreateMetaPartitionRequest{
Start: mp.Start,
End: mp.End,
PartitionID: mp.PartitionID,
Members: peers,
VolName: volName,
}
if specifyAddrs == nil {
hosts = mp.Hosts
} else {
hosts = specifyAddrs
}
for _, addr := range hosts {
t := proto.NewAdminTask(proto.OpCreateMetaPartition, addr, req)
resetMetaPartitionTaskID(t, mp.PartitionID)
tasks = append(tasks, t)
}
return
}
func (mp *MetaPartition) tryToChangeLeader(c *Cluster, metaNode *MetaNode) (err error) {
task, err := mp.createTaskToTryToChangeLeader(metaNode.Addr)
if err != nil {
return
}
if _, err = metaNode.Sender.syncSendAdminTask(task); err != nil {
return
}
return
}
func (mp *MetaPartition) createTaskToTryToChangeLeader(addr string) (task *proto.AdminTask, err error) {
task = proto.NewAdminTask(proto.OpMetaPartitionTryToLeader, addr, nil)
resetMetaPartitionTaskID(task, mp.PartitionID)
return
}
func (mp *MetaPartition) createTaskToCreateReplica(host string) (t *proto.AdminTask, err error) {
req := &proto.CreateMetaPartitionRequest{
Start: mp.Start,
End: mp.End,
PartitionID: mp.PartitionID,
Members: mp.Peers,
VolName: mp.volName,
}
t = proto.NewAdminTask(proto.OpCreateMetaPartition, host, req)
resetMetaPartitionTaskID(t, mp.PartitionID)
return
}
func (mp *MetaPartition) createTaskToAddRaftMember(addPeer proto.Peer, leaderAddr string) (t *proto.AdminTask, err error) {
req := &proto.AddMetaPartitionRaftMemberRequest{PartitionId: mp.PartitionID, AddPeer: addPeer}
t = proto.NewAdminTask(proto.OpAddMetaPartitionRaftMember, leaderAddr, req)
resetMetaPartitionTaskID(t, mp.PartitionID)
return
}
func (mp *MetaPartition) createTaskToRemoveRaftMember(removePeer proto.Peer) (t *proto.AdminTask, err error) {
mr, err := mp.getMetaReplicaLeader()
if err != nil {
return nil, errors.NewError(err)
}
req := &proto.RemoveMetaPartitionRaftMemberRequest{PartitionId: mp.PartitionID, RemovePeer: removePeer}
t = proto.NewAdminTask(proto.OpRemoveMetaPartitionRaftMember, mr.Addr, req)
resetMetaPartitionTaskID(t, mp.PartitionID)
return
}
func (mp *MetaPartition) createTaskToDecommissionReplica(volName string, removePeer proto.Peer, addPeer proto.Peer) (t *proto.AdminTask, err error) {
mr, err := mp.getMetaReplicaLeader()
if err != nil {
return nil, errors.NewError(err)
}
req := &proto.MetaPartitionDecommissionRequest{PartitionID: mp.PartitionID, VolName: volName, RemovePeer: removePeer, AddPeer: addPeer}
t = proto.NewAdminTask(proto.OpDecommissionMetaPartition, mr.Addr, req)
resetMetaPartitionTaskID(t, mp.PartitionID)
return
}
func resetMetaPartitionTaskID(t *proto.AdminTask, partitionID uint64) {
t.ID = fmt.Sprintf("%v_pid[%v]", t.ID, partitionID)
t.PartitionID = partitionID
}
func (mp *MetaPartition) createTaskToUpdateMetaReplica(clusterID string, partitionID uint64, end uint64) (t *proto.AdminTask) {
mr, err := mp.getMetaReplicaLeader()
if err != nil {
msg := fmt.Sprintf("action[createTaskToUpdateMetaReplica] clusterID[%v] meta partition %v no leader",
clusterID, mp.PartitionID)
Warn(clusterID, msg)
return
}
req := &proto.UpdateMetaPartitionRequest{PartitionID: partitionID, End: end, VolName: mp.volName}
t = proto.NewAdminTask(proto.OpUpdateMetaPartition, mr.Addr, req)
resetMetaPartitionTaskID(t, mp.PartitionID)
return
}
func (mr *MetaReplica) createTaskToDeleteReplica(partitionID uint64) (t *proto.AdminTask) {
req := &proto.DeleteMetaPartitionRequest{PartitionID: partitionID}
t = proto.NewAdminTask(proto.OpDeleteMetaPartition, mr.Addr, req)
resetMetaPartitionTaskID(t, partitionID)
return
}
func (mr *MetaReplica) createTaskToLoadMetaPartition(partitionID uint64) (t *proto.AdminTask) {
req := &proto.MetaPartitionLoadRequest{PartitionID: partitionID}
t = proto.NewAdminTask(proto.OpLoadMetaPartition, mr.Addr, req)
resetMetaPartitionTaskID(t, partitionID)
return
}
func (mr *MetaReplica) isMissing() (miss bool) {
return time.Now().Unix()-mr.ReportTime > defaultMetaPartitionTimeOutSec
}
func (mr *MetaReplica) isActive() (active bool) {
return mr.metaNode.IsActive && mr.Status != proto.Unavailable &&
time.Now().Unix()-mr.ReportTime < defaultMetaPartitionTimeOutSec
}
func (mr *MetaReplica) setLastReportTime() {
mr.ReportTime = time.Now().Unix()
}
func (mr *MetaReplica) updateMetric(mgr *proto.MetaPartitionReport) {
mr.Status = (int8)(mgr.Status)
mr.IsLeader = mgr.IsLeader
mr.MaxInodeID = mgr.MaxInodeID
mr.InodeCount = mgr.InodeCnt
mr.DentryCount = mgr.DentryCnt
mr.setLastReportTime()
}
func (mp *MetaPartition) afterCreation(nodeAddr string, c *Cluster) (err error) {
metaNode, err := c.metaNode(nodeAddr)
if err != nil {
return err
}
mr := newMetaReplica(mp.Start, mp.End, metaNode)
mr.Status = proto.ReadWrite
mr.ReportTime = time.Now().Unix()
mp.addReplica(mr)
mp.removeMissingReplica(mr.Addr)
return
}
func (mp *MetaPartition) addOrReplaceLoadResponse(response *proto.MetaPartitionLoadResponse) {
mp.Lock()
defer mp.Unlock()
loadResponse := make([]*proto.MetaPartitionLoadResponse, 0)
for _, lr := range mp.LoadResponse {
if lr.Addr == response.Addr {
continue
}
loadResponse = append(loadResponse, lr)
}
loadResponse = append(loadResponse, response)
mp.LoadResponse = loadResponse
}
func (mp *MetaPartition) getMinusOfMaxInodeID() (minus float64) {
mp.RLock()
defer mp.RUnlock()
var sentry float64
for index, replica := range mp.Replicas {
if index == 0 {
sentry = float64(replica.MaxInodeID)
continue
}
diff := math.Abs(float64(replica.MaxInodeID) - sentry)
if diff > minus {
minus = diff
}
}
return
}
func (mp *MetaPartition) setMaxInodeID() {
var maxUsed uint64
for _, r := range mp.Replicas {
if r.MaxInodeID > maxUsed {
maxUsed = r.MaxInodeID
}
}
mp.MaxInodeID = maxUsed
}
func (mp *MetaPartition) setInodeCount() {
var inodeCount uint64
for _, r := range mp.Replicas {
if r.InodeCount > inodeCount {
inodeCount = r.InodeCount
}
}
mp.InodeCount = inodeCount
}
func (mp *MetaPartition) setDentryCount() {
var dentryCount uint64
for _, r := range mp.Replicas {
if r.DentryCount > dentryCount {
dentryCount = r.DentryCount
}
}
mp.DentryCount = dentryCount
}
func (mp *MetaPartition) getAllNodeSets() (nodeSets []uint64) {
mp.RLock()
defer mp.RUnlock()
nodeSets = make([]uint64, 0)
for _, mr := range mp.Replicas {
if mr.metaNode == nil {
continue
}
if !containsID(nodeSets, mr.metaNode.NodeSetID) {
nodeSets = append(nodeSets, mr.metaNode.NodeSetID)
}
}
return
}
func (mp *MetaPartition) getLiveZones(offlineAddr string) (zones []string) {
mp.RLock()
defer mp.RUnlock()
for _, mr := range mp.Replicas {
if mr.metaNode == nil {
continue
}
if mr.Addr == offlineAddr {
continue
}
zones = append(zones, mr.metaNode.ZoneName)
}
return
}