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server:add querystats sync to follower pd #4922

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60e99d7
server:add querystats sync to fllower pd ref: #pingcap/tidb-dashboard…
qidi1 May 10, 2022
f2ae01b
Merge branch 'master' into sync
qidi1 Jun 17, 2022
e8cd552
Merge branch 'master' into sync
qidi1 Sep 30, 2022
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5 changes: 5 additions & 0 deletions server/region_syncer/client.go
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Original file line number Diff line number Diff line change
Expand Up @@ -187,9 +187,11 @@ func (s *RegionSyncer) StartSyncWithLeader(addr string) {
stats := resp.GetRegionStats()
regions := resp.GetRegions()
buckets := resp.GetBuckets()
queryStats := resp.GetQueryStats()
regionLeaders := resp.GetRegionLeaders()
hasStats := len(stats) == len(regions)
hasBuckets := len(buckets) == len(regions)
hasQueryStats := len(queryStats) == len(regions)

@nolouch nolouch May 17, 2022

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Can it merge to hasStats?

for i, r := range regions {
var (
region *core.RegionInfo
Expand Down Expand Up @@ -222,6 +224,9 @@ func (s *RegionSyncer) StartSyncWithLeader(addr string) {
region.UpdateBuckets(buckets[i], old)
}
}
if hasQueryStats {
region.QueryStats = queryStats[i]
}
if saveKV {
err = storage.SaveRegion(r)
}
Expand Down
10 changes: 10 additions & 0 deletions server/region_syncer/server.go
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Original file line number Diff line number Diff line change
Expand Up @@ -114,6 +114,7 @@ func (s *RegionSyncer) RunServer(ctx context.Context, regionNotifier <-chan *cor
var stats []*pdpb.RegionStat
var leaders []*metapb.Peer
var buckets []*metapb.Buckets
var queryStats []*pdpb.QueryStats
ticker := time.NewTicker(syncerKeepAliveInterval)

defer func() {
Expand All @@ -138,6 +139,7 @@ func (s *RegionSyncer) RunServer(ctx context.Context, regionNotifier <-chan *cor
}
buckets = append(buckets, bucket)
leaders = append(leaders, first.GetLeader())
queryStats = append(queryStats, first.QueryStats)
startIndex := s.history.GetNextIndex()
s.history.Record(first)
pending := len(regionNotifier)
Expand All @@ -152,6 +154,7 @@ func (s *RegionSyncer) RunServer(ctx context.Context, regionNotifier <-chan *cor
}
buckets = append(buckets, bucket)
leaders = append(leaders, region.GetLeader())
queryStats = append(queryStats, region.QueryStats)
s.history.Record(region)
}
regions := &pdpb.SyncRegionResponse{
Expand All @@ -161,6 +164,7 @@ func (s *RegionSyncer) RunServer(ctx context.Context, regionNotifier <-chan *cor
RegionStats: stats,
RegionLeaders: leaders,
Buckets: buckets,
QueryStats: queryStats,

@nolouch nolouch Jun 16, 2022

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Can queryStats be merge into ReginStats?

}
s.broadcast(regions)
case <-ticker.C:
Expand Down Expand Up @@ -241,6 +245,7 @@ func (s *RegionSyncer) syncHistoryRegion(ctx context.Context, request *pdpb.Sync
stats := make([]*pdpb.RegionStat, 0, maxSyncRegionBatchSize)
leaders := make([]*metapb.Peer, 0, maxSyncRegionBatchSize)
buckets := make([]*metapb.Buckets, 0, maxSyncRegionBatchSize)
queryStats := make([]*pdpb.QueryStats, 0, maxSyncRegionBatchSize)
for syncedIndex, r := range regions {
select {
case <-ctx.Done():
Expand All @@ -264,6 +269,7 @@ func (s *RegionSyncer) syncHistoryRegion(ctx context.Context, request *pdpb.Sync
bucket = r.GetBuckets()
}
buckets = append(buckets, bucket)
queryStats = append(queryStats, r.QueryStats)
if len(metas) < maxSyncRegionBatchSize && syncedIndex < len(regions)-1 {
continue
}
Expand All @@ -274,6 +280,7 @@ func (s *RegionSyncer) syncHistoryRegion(ctx context.Context, request *pdpb.Sync
RegionStats: stats,
RegionLeaders: leaders,
Buckets: buckets,
QueryStats: queryStats,
}
s.limit.WaitN(ctx, resp.Size())
lastIndex += len(metas)
Expand Down Expand Up @@ -302,6 +309,7 @@ func (s *RegionSyncer) syncHistoryRegion(ctx context.Context, request *pdpb.Sync
stats := make([]*pdpb.RegionStat, len(records))
leaders := make([]*metapb.Peer, len(records))
buckets := make([]*metapb.Buckets, len(records))
queryStats := make([]*pdpb.QueryStats, len(records))
for i, r := range records {
regions[i] = r.GetMeta()
stats[i] = r.GetStat()
Expand All @@ -315,6 +323,7 @@ func (s *RegionSyncer) syncHistoryRegion(ctx context.Context, request *pdpb.Sync
if r.GetBuckets() != nil {
buckets[i] = r.GetBuckets()
}
queryStats[i] = r.QueryStats
}
resp := &pdpb.SyncRegionResponse{
Header: &pdpb.ResponseHeader{ClusterId: s.server.ClusterID()},
Expand All @@ -323,6 +332,7 @@ func (s *RegionSyncer) syncHistoryRegion(ctx context.Context, request *pdpb.Sync
RegionStats: stats,
RegionLeaders: leaders,
Buckets: buckets,
QueryStats: queryStats,
}
return stream.Send(resp)
}
Expand Down