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makeup_down_replica.go
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makeup_down_replica.go
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// Copyright 2018 PingCAP, Inc.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package cases
import (
"github.com/pingcap/kvproto/pkg/metapb"
"github.com/pingcap/pd/server/core"
"github.com/pingcap/pd/tools/pd-simulator/simulator/simutil"
)
func newMakeupDownReplicas() *Case {
var simCase Case
var id idAllocator
for i := 1; i <= 4; i++ {
simCase.Stores = append(simCase.Stores, &Store{
ID: id.nextID(),
Status: metapb.StoreState_Up,
Capacity: 1 * TB,
Available: 900 * GB,
Version: "2.1.0",
})
}
for i := 0; i < 400; i++ {
peers := []*metapb.Peer{
{Id: id.nextID(), StoreId: uint64(i)%4 + 1},
{Id: id.nextID(), StoreId: uint64(i+1)%4 + 1},
{Id: id.nextID(), StoreId: uint64(i+2)%4 + 1},
}
simCase.Regions = append(simCase.Regions, Region{
ID: id.nextID(),
Peers: peers,
Leader: peers[0],
Size: 96 * MB,
Keys: 960000,
})
}
simCase.MaxID = id.maxID
numNodes := 4
down := false
e := &DeleteNodesInner{}
e.Step = func(tick int64) uint64 {
if numNodes > 3 && tick%100 == 0 {
numNodes--
return uint64(1)
}
if tick == 300 {
down = true
}
return 0
}
simCase.Events = []EventInner{e}
simCase.Checker = func(regions *core.RegionsInfo) bool {
sum := 0
regionCounts := make([]int, 0, 3)
for i := 1; i <= 4; i++ {
regionCount := regions.GetStoreRegionCount(uint64(i))
if i != 1 {
regionCounts = append(regionCounts, regionCount)
}
sum += regionCount
}
simutil.Logger.Infof("region counts: %v", regionCounts)
if down && sum < 1200 {
// only need to print once
down = false
simutil.Logger.Error("making up replicas don't start immediately")
return false
}
for _, regionCount := range regionCounts {
if regionCount != 400 {
return false
}
}
return true
}
return &simCase
}