Implement snap := ClusterSnapshot()

Below is the list of instance of `ClusterSnapshot()` in the latest
`with-etcd` code. Some of these may not yet exist in the `disco` branch,
but this commit is implementing any that currently apply.

==========================
Done:
==========================
index.go
930:	snap := NewClusterSnapshot(topo, topo.Hasher, topo.ReplicaN)
1072:	snap := NewClusterSnapshot(topo, topo.Hasher, topo.ReplicaN)

cmd/pilosa-fsck/fsck.go
786:	snap := pilosa.NewClusterSnapshot(cfg.topo, cfg.topo.Hasher, cfg.topo.ReplicaN)

boltdb/translate.go
558:	snap := pilosa.NewClusterSnapshot(topo, topo.Hasher, topo.ReplicaN)
1264:	snap := pilosa.NewClusterSnapshot(topo, topo.Hasher, topo.ReplicaN)

fragment.go
3448:	snap := NewClusterSnapshot(s.Cluster.noder, s.Cluster.Hasher, s.Cluster.ReplicaN)
3568:	snap := NewClusterSnapshot(s.Cluster.noder, s.Cluster.Hasher, s.Cluster.ReplicaN)
3620:	snap := NewClusterSnapshot(s.Cluster.noder, s.Cluster.Hasher, s.Cluster.ReplicaN)

==========================
Remaining:
==========================

cluster.go
371:	snap := NewClusterSnapshot(NewLocalNoder(nodes), c.Hasher, c.ReplicaN)
474:	snap := NewClusterSnapshot(c.noder, c.Hasher, c.ReplicaN)
639:	fSnap := NewClusterSnapshot(c.noder, c.Hasher, c.ReplicaN)
640:	toSnap := NewClusterSnapshot(to.noder, c.Hasher, to.ReplicaN)
703:	snap := NewClusterSnapshot(c.noder, c.Hasher, c.ReplicaN)
1475:		snap := NewClusterSnapshot(c.noder, c.Hasher, c.ReplicaN)
1502:	snap := NewClusterSnapshot(c.noder, c.Hasher, c.ReplicaN)
1941:	snap := NewClusterSnapshot(c.noder, c.Hasher, c.ReplicaN)
1986:	snap := NewClusterSnapshot(c.noder, c.Hasher, c.ReplicaN)
2049:	snap := NewClusterSnapshot(c.noder, c.Hasher, c.ReplicaN)
2126:	snap := NewClusterSnapshot(c.noder, c.Hasher, c.ReplicaN)

api.go
475:	snap := NewClusterSnapshot(api.cluster.noder, api.cluster.Hasher, api.cluster.ReplicaN)
604:	snap := NewClusterSnapshot(api.cluster.noder, api.cluster.Hasher, api.cluster.ReplicaN)
690:	snap := NewClusterSnapshot(api.cluster.noder, api.cluster.Hasher, api.cluster.ReplicaN)
1684:	snap := NewClusterSnapshot(api.cluster.noder, api.cluster.Hasher, api.cluster.ReplicaN)
1946:	snap := NewClusterSnapshot(api.cluster.noder, api.cluster.Hasher, api.cluster.ReplicaN)

executor.go
3781:	snap := NewClusterSnapshot(e.Cluster.noder, e.Cluster.Hasher, e.Cluster.ReplicaN)
4157:	snap := NewClusterSnapshot(e.Cluster.noder, e.Cluster.Hasher, e.Cluster.ReplicaN)
4200:	snap := NewClusterSnapshot(e.Cluster.noder, e.Cluster.Hasher, e.Cluster.ReplicaN)
4243:	snap := NewClusterSnapshot(e.Cluster.noder, e.Cluster.Hasher, e.Cluster.ReplicaN)
4517:	snap := NewClusterSnapshot(NewLocalNoder(e.Cluster.Nodes()), e.Cluster.Hasher, e.Cluster.ReplicaN)

holder.go
1465:	snap := NewClusterSnapshot(s.Cluster.noder, s.Cluster.Hasher, s.Cluster.ReplicaN)
1668:	snap := NewClusterSnapshot(s.Cluster.noder, s.Cluster.Hasher, s.Cluster.ReplicaN)
1889:	snap := NewClusterSnapshot(s.Cluster.noder, s.Cluster.Hasher, s.Cluster.ReplicaN)
1963:	snap := NewClusterSnapshot(c.Cluster.noder, c.Cluster.Hasher, c.Cluster.ReplicaN)
This commit is contained in:
Travis 2021-01-06 22:15:34 -06:00
parent 3f26d667b4
commit 134abda51b
No known key found for this signature in database
GPG key ID: 37080CC2042BA34E
5 changed files with 101 additions and 35 deletions

View file

@ -27,6 +27,7 @@ import (
"time"
"github.com/pilosa/pilosa/v2"
"github.com/pilosa/pilosa/v2/topology"
"github.com/pkg/errors"
"github.com/zeebo/blake3"
bolt "go.etcd.io/bbolt"
@ -626,7 +627,11 @@ func (s *TranslateStore) ComputeTranslatorSummaryCols(partitionID int, topo *pil
if partitionID != s.partitionID {
panic(fmt.Sprintf("inconsistent partitionID arg %v with TranslateStore.paritionID %v", partitionID, s.partitionID))
}
firstPrimary := topo.PrimaryNodeIndex(partitionID)
// Create a snapshot of the cluster to use for node/partition calculations.
snap := topology.NewClusterSnapshot(topo, topo.Hasher, topo.ReplicaN)
firstPrimary := snap.PrimaryNodeIndex(partitionID)
err = s.db.View(func(tx *bolt.Tx) error {
@ -656,7 +661,7 @@ func (s *TranslateStore) ComputeTranslatorSummaryCols(partitionID int, topo *pil
shard := id / pilosa.ShardWidth
ks := string(v)
primary := topo.GetPrimaryForColKeyTranslation(s.index, ks)
primary := snap.PrimaryForColKeyTranslation(s.index, ks)
if firstPrimary < 0 {
firstPrimary = primary
} else {
@ -666,7 +671,7 @@ func (s *TranslateStore) ComputeTranslatorSummaryCols(partitionID int, topo *pil
}
// Verify the invariant that the primaries agree. Just a sanity check.
primaryForShard := topo.GetPrimaryForShardReplication(s.index, shard)
primaryForShard := snap.PrimaryForShardReplication(s.index, shard)
if primaryForShard != firstPrimary {
panic(fmt.Sprintf("primaryForShard (%v) != firstPrimary (%v); key='%v', id=%v, shard=%v; partitionID=%v", primaryForShard, firstPrimary, ks, id, shard, partitionID))
}
@ -1329,11 +1334,17 @@ func makeStringKeyChanges(
}
}
// Create a snapshot of the cluster to use for node/partition calculations.
var snap *topology.ClusterSnapshot
if topo != nil {
snap = topology.NewClusterSnapshot(topo, topo.Hasher, topo.ReplicaN)
}
for key2, id2 := range fwd2 {
//vv("makeStringKeyChanges on fwd2, key2='%v', id2=%x", key2, id2)
isPrimary := false
if topo != nil {
primary := topo.GetPrimaryForColKeyTranslation(s.index, key2)
primary := snap.PrimaryForColKeyTranslation(s.index, key2)
isPrimary = s.partitionID == primary
}
_ = isPrimary

View file

@ -899,10 +899,10 @@ func shardToShardPartition(index string, shard uint64, partitionN int) int {
return int(h.Sum64() % uint64(partitionN))
}
// keyPartition returns the key-partition that a key belongs to.
// KeyPartition returns the key-partition that a key belongs to.
// NOTE: the key-partition is DIFFERENT from the shard-partition.
func (topo *Topology) KeyPartition(index, key string) int {
return keyToKeyPartition(index, key, topo.PartitionN)
func (t *Topology) KeyPartition(index, key string) int {
return keyToKeyPartition(index, key, t.PartitionN)
}
func keyToKeyPartition(index, key string, partitionN int) int {
@ -1021,31 +1021,31 @@ func (c *cluster) unprotectedPrimaryPartitionNode(partition int) *topology.Node
return nil
}
func (topo *Topology) IsPrimary(nodeID string, partitionID int) bool {
primary := topo.PrimaryNodeIndex(partitionID)
return nodeID == topo.nodeIDs[primary]
func (t *Topology) IsPrimary(nodeID string, partitionID int) bool {
primary := t.PrimaryNodeIndex(partitionID)
return nodeID == t.nodeIDs[primary]
}
func (topo *Topology) PrimaryNodeIndex(partitionID int) (nodeIndex int) {
n := len(topo.nodeIDs)
func (t *Topology) PrimaryNodeIndex(partitionID int) (nodeIndex int) {
n := len(t.nodeIDs)
if n == 0 {
if topo.cluster != nil {
n = len(topo.cluster.nodes)
if t.cluster != nil {
n = len(t.cluster.nodes)
}
}
nodeIndex = topo.Hasher.Hash(uint64(partitionID), n)
nodeIndex = t.Hasher.Hash(uint64(partitionID), n)
return
}
func (topo *Topology) GetNonPrimaryReplicas(partitionID int) (nonPrimaryReplicas []string) {
func (t *Topology) GetNonPrimaryReplicas(partitionID int) (nonPrimaryReplicas []string) {
primary := topo.PrimaryNodeIndex(partitionID)
nodeN := len(topo.nodeIDs)
primary := t.PrimaryNodeIndex(partitionID)
nodeN := len(t.nodeIDs)
// Collect nodes around the ring.
for i := 1; i < nodeN; i++ {
nodeID := topo.nodeIDs[(primary+i)%nodeN]
if i < topo.ReplicaN {
nodeID := t.nodeIDs[(primary+i)%nodeN]
if i < t.ReplicaN {
nonPrimaryReplicas = append(nonPrimaryReplicas, nodeID)
}
}
@ -1053,7 +1053,7 @@ func (topo *Topology) GetNonPrimaryReplicas(partitionID int) (nonPrimaryReplicas
}
// the map replicaNodeIDs[nodeID] will have a true value for the primary nodeID, and false for others.
func (topo *Topology) GetReplicasForPrimary(primary int) (replicaNodeIDs, nonReplicas map[string]bool) {
func (t *Topology) GetReplicasForPrimary(primary int) (replicaNodeIDs, nonReplicas map[string]bool) {
if primary < 0 {
// no nodes anyway
return
@ -1061,12 +1061,12 @@ func (topo *Topology) GetReplicasForPrimary(primary int) (replicaNodeIDs, nonRep
replicaNodeIDs = make(map[string]bool)
nonReplicas = make(map[string]bool)
nodeN := len(topo.nodeIDs)
nodeN := len(t.nodeIDs)
// Collect nodes around the ring.
for i := 0; i < nodeN; i++ {
nodeID := topo.nodeIDs[(primary+i)%nodeN]
if i < topo.ReplicaN {
nodeID := t.nodeIDs[(primary+i)%nodeN]
if i < t.ReplicaN {
// mark true if primary
replicaNodeIDs[nodeID] = (i == 0)
} else {
@ -1895,6 +1895,37 @@ func (t *Topology) String() string {
t.ReplicaN,
)
}
///////////////////////////////////////////
// Topology implements the Noder interface.
// Nodes implements the Noder interface.
func (t *Topology) Nodes() []*topology.Node {
nodes := make([]*topology.Node, len(t.nodeIDs))
for i, nodeID := range t.nodeIDs {
nodes[i] = &topology.Node{
ID: nodeID,
}
}
return nodes
}
// SetNodes implements the Noder interface.
func (t *Topology) SetNodes(nodes []*topology.Node) {}
// AppendNode implements the Noder interface.
func (t *Topology) AppendNode(node *topology.Node) {}
// RemoveNode implements the Noder interface.
func (t *Topology) RemoveNode(nodeID string) bool {
return false
}
// SetNodeState implements the Noder interface.
func (t *Topology) SetNodeState(nodeID string, state string) {}
///////////////////////////////////////////
func (t *Topology) GetNodeIDs() []string {
return t.nodeIDs
}
@ -2609,9 +2640,9 @@ func (c *cluster) translateIndexKeys(ctx context.Context, indexName string, keys
// are shared between replicas, and one node is the primary for
// replication. So with 4 nodes and 3-way replication, each node has 3/4 of
// the translation stores on it.
func (topo *Topology) GetPrimaryForColKeyTranslation(index, key string) (primary int) {
partitionID := topo.KeyPartition(index, key)
return topo.PrimaryNodeIndex(partitionID)
func (t *Topology) GetPrimaryForColKeyTranslation(index, key string) (primary int) {
partitionID := t.KeyPartition(index, key)
return t.PrimaryNodeIndex(partitionID)
}
// should match cluster.go:1033 cluster.ownsShard(nodeID, index, shard)

View file

@ -33,6 +33,7 @@ import (
"github.com/pilosa/pilosa/v2/boltdb"
"github.com/pilosa/pilosa/v2/internal"
"github.com/pilosa/pilosa/v2/server"
"github.com/pilosa/pilosa/v2/topology"
"github.com/pkg/errors"
"github.com/zeebo/blake3"
)
@ -782,6 +783,9 @@ func (cfg *FsckConfig) analyzeThisIndex(
index, len(nodes2fragsum), nodes2fragsum)
}
// Create a snapshot of the cluster to use for node/partition calculations.
snap := topology.NewClusterSnapshot(cfg.topo, cfg.topo.Hasher, cfg.topo.ReplicaN)
for node, sum := range nodes2fragsum {
if !quiet {
fmt.Printf("# on node '%v'\n", node)
@ -798,7 +802,7 @@ func (cfg *FsckConfig) analyzeThisIndex(
totalFiles++
//vv("checking %v on node %v", relpath, node)
replicas, nonReplicas := cfg.topo.GetReplicasForPrimary(fragsum.Primary)
replicas, nonReplicas := snap.ReplicasForPrimary(fragsum.Primary)
_, _ = replicas, nonReplicas
//vv("replicas = '%#v'", replicas)
//vv("nonReplicas = '%#v'", nonReplicas)

View file

@ -3555,8 +3555,12 @@ func (s *fragmentSyncer) syncFragment() error {
span, ctx := tracing.StartSpanFromContext(context.Background(), "FragmentSyncer.syncFragment")
defer span.Finish()
// Create a snapshot of the cluster to use for node/partition calculations.
// TODO: this needs to use Cluster.noder once that has been implemented.
snap := topology.NewClusterSnapshot(topology.NewLocalNoder(s.Cluster.Nodes()), s.Cluster.Hasher, s.Cluster.ReplicaN)
// Determine replica set.
nodes := s.Cluster.shardNodes(s.Fragment.index(), s.Fragment.shard)
nodes := snap.ShardNodes(s.Fragment.index(), s.Fragment.shard)
if len(nodes) == 1 {
return nil
}
@ -3672,9 +3676,13 @@ func (s *fragmentSyncer) syncBlockFromPrimary(id int) error {
f := s.Fragment
// Create a snapshot of the cluster to use for node/partition calculations.
// TODO: this needs to use Cluster.noder once that has been implemented.
snap := topology.NewClusterSnapshot(topology.NewLocalNoder(s.Cluster.Nodes()), s.Cluster.Hasher, s.Cluster.ReplicaN)
// Determine replica set. Return early if this is not
// the primary node.
nodes := s.Cluster.shardNodes(f.index(), f.shard)
nodes := snap.ShardNodes(f.index(), f.shard)
if s.Node.ID != nodes[0].ID {
f.holder.Logger.Debugf("non-primary replica expecting sync from primary: %s, index=%s, field=%s, shard=%d", nodes[0].ID, f.index(), f.field(), f.shard)
return nil
@ -3721,10 +3729,14 @@ func (s *fragmentSyncer) syncBlock(id int) error {
f := s.Fragment
// Create a snapshot of the cluster to use for node/partition calculations.
// TODO: this needs to use Cluster.noder once that has been implemented.
snap := topology.NewClusterSnapshot(topology.NewLocalNoder(s.Cluster.Nodes()), s.Cluster.Hasher, s.Cluster.ReplicaN)
// Read pairs from each remote block.
var uris []*pnet.URI
var pairSets []pairSet
for _, node := range s.Cluster.shardNodes(f.index(), f.shard) {
for _, node := range snap.ShardNodes(f.index(), f.shard) {
if s.Node.ID == node.ID {
continue
}

View file

@ -32,6 +32,7 @@ import (
"github.com/pilosa/pilosa/v2/roaring"
"github.com/pilosa/pilosa/v2/stats"
"github.com/pilosa/pilosa/v2/testhook"
"github.com/pilosa/pilosa/v2/topology"
"github.com/pkg/errors"
"github.com/zeebo/blake3"
"golang.org/x/sync/errgroup"
@ -847,6 +848,9 @@ floop:
fmt.Printf("# ====================\n")
}
// Create a snapshot of the cluster to use for node/partition calculations.
snap := topology.NewClusterSnapshot(topo, topo.Hasher, topo.ReplicaN)
tloop:
for partitionID, store := range idx.translateStores {
partitionID := partitionID
@ -855,7 +859,7 @@ tloop:
fun2 := func(worker int) error {
//vv("ComputeTranslatorSummary() running on store.Path = '%v'", store.GetStorePath())
if checkKeys {
prim := topo.PrimaryNodeIndex(partitionID)
prim := snap.PrimaryNodeIndex(partitionID)
primID := topo.nodeIDs[prim]
// note: we fix irrespective of nodeID == primID now, so that we
@ -891,9 +895,9 @@ tloop:
sum.Index = idx.Name()
sum.StorePath = store.GetStorePath()
sum.NodeID = nodeID
sum.IsPrimary = topo.IsPrimary(nodeID, partitionID)
sum.IsPrimary = snap.IsPrimary(nodeID, partitionID)
replicas := topo.GetNonPrimaryReplicas(partitionID)
replicas := snap.NonPrimaryReplicas(partitionID)
for _, replica := range replicas {
if nodeID == replica {
sum.IsReplica = true
@ -980,6 +984,10 @@ func (idx *Index) WriteFragmentChecksums(w io.Writer, showBits, showOps bool, to
IndexPath: idx.path,
RelPath2fsum: make(map[string]*FragSum),
}
// Create a snapshot of the cluster to use for node/partition calculations.
snap := topology.NewClusterSnapshot(topo, topo.Hasher, topo.ReplicaN)
paths, err := listFilesUnderDir(idx.path, false, "", true)
panicOn(err)
index := idx.name
@ -990,7 +998,7 @@ func (idx *Index) WriteFragmentChecksums(w io.Writer, showBits, showOps bool, to
continue // ignore .meta paths
}
abspath := idx.path + sep + relpath
primary := topo.GetPrimaryForShardReplication(index, shard)
primary := snap.PrimaryForShardReplication(index, shard)
checksum, hotbits := RoaringFragmentChecksum(abspath, index, field, view, shard)
if verbose {