mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-05 05:18:52 +08:00
681 lines
18 KiB
Go
681 lines
18 KiB
Go
package master
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import (
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"fmt"
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"strconv"
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"sync"
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"github.com/zilliztech/milvus-distributed/internal/proto/commonpb"
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"github.com/zilliztech/milvus-distributed/internal/util/typeutil"
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"github.com/golang/protobuf/proto"
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"github.com/zilliztech/milvus-distributed/internal/errors"
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"github.com/zilliztech/milvus-distributed/internal/kv"
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pb "github.com/zilliztech/milvus-distributed/internal/proto/etcdpb"
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)
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type metaTable struct {
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client kv.TxnBase // client of a reliable kv service, i.e. etcd client
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tenantID2Meta map[UniqueID]pb.TenantMeta // tenant id to tenant meta
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proxyID2Meta map[UniqueID]pb.ProxyMeta // proxy id to proxy meta
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collID2Meta map[UniqueID]pb.CollectionMeta // collection id to collection meta
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collName2ID map[string]UniqueID // collection name to collection id
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segID2Meta map[UniqueID]pb.SegmentMeta // segment id to segment meta
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segID2IndexMetas map[UniqueID][]pb.FieldIndexMeta // segment id to array of field index meta
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tenantLock sync.RWMutex
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proxyLock sync.RWMutex
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ddLock sync.RWMutex
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indexLock sync.RWMutex
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}
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func NewMetaTable(kv kv.TxnBase) (*metaTable, error) {
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mt := &metaTable{
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client: kv,
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tenantLock: sync.RWMutex{},
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proxyLock: sync.RWMutex{},
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ddLock: sync.RWMutex{},
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}
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err := mt.reloadFromKV()
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if err != nil {
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return nil, err
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}
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return mt, nil
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}
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func (mt *metaTable) reloadFromKV() error {
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mt.tenantID2Meta = make(map[UniqueID]pb.TenantMeta)
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mt.proxyID2Meta = make(map[UniqueID]pb.ProxyMeta)
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mt.collID2Meta = make(map[UniqueID]pb.CollectionMeta)
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mt.collName2ID = make(map[string]UniqueID)
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mt.segID2Meta = make(map[UniqueID]pb.SegmentMeta)
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mt.segID2IndexMetas = make(map[UniqueID][]pb.FieldIndexMeta)
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_, values, err := mt.client.LoadWithPrefix("tenant")
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if err != nil {
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return err
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}
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for _, value := range values {
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tenantMeta := pb.TenantMeta{}
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err := proto.UnmarshalText(value, &tenantMeta)
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if err != nil {
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return err
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}
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mt.tenantID2Meta[tenantMeta.ID] = tenantMeta
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}
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_, values, err = mt.client.LoadWithPrefix("proxy")
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if err != nil {
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return err
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}
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for _, value := range values {
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proxyMeta := pb.ProxyMeta{}
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err = proto.UnmarshalText(value, &proxyMeta)
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if err != nil {
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return err
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}
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mt.proxyID2Meta[proxyMeta.ID] = proxyMeta
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}
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_, values, err = mt.client.LoadWithPrefix("collection")
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if err != nil {
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return err
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}
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for _, value := range values {
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collectionMeta := pb.CollectionMeta{}
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err = proto.UnmarshalText(value, &collectionMeta)
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if err != nil {
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return err
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}
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mt.collID2Meta[collectionMeta.ID] = collectionMeta
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mt.collName2ID[collectionMeta.Schema.Name] = collectionMeta.ID
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}
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_, values, err = mt.client.LoadWithPrefix("segment")
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if err != nil {
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return err
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}
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for _, value := range values {
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segmentMeta := pb.SegmentMeta{}
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err = proto.UnmarshalText(value, &segmentMeta)
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if err != nil {
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return err
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}
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mt.segID2Meta[segmentMeta.SegmentID] = segmentMeta
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}
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_, values, err = mt.client.LoadWithPrefix("indexmeta")
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if err != nil {
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return err
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}
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for _, v := range values {
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indexMeta := pb.FieldIndexMeta{}
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err = proto.UnmarshalText(v, &indexMeta)
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if err != nil {
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return err
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}
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mt.segID2IndexMetas[indexMeta.SegmentID] = append(mt.segID2IndexMetas[indexMeta.SegmentID], indexMeta)
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}
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return nil
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}
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// metaTable.ddLock.Lock() before call this function
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func (mt *metaTable) saveCollectionMeta(coll *pb.CollectionMeta) error {
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collBytes := proto.MarshalTextString(coll)
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mt.collID2Meta[coll.ID] = *coll
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mt.collName2ID[coll.Schema.Name] = coll.ID
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return mt.client.Save("/collection/"+strconv.FormatInt(coll.ID, 10), collBytes)
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}
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// metaTable.ddLock.Lock() before call this function
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func (mt *metaTable) saveSegmentMeta(seg *pb.SegmentMeta) error {
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segBytes := proto.MarshalTextString(seg)
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mt.segID2Meta[seg.SegmentID] = *seg
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return mt.client.Save("/segment/"+strconv.FormatInt(seg.SegmentID, 10), segBytes)
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}
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// metaTable.ddLock.Lock() before call this function
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func (mt *metaTable) saveCollectionAndDeleteSegmentsMeta(coll *pb.CollectionMeta, segIDs []UniqueID) error {
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segIDStrs := make([]string, 0, len(segIDs))
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for _, segID := range segIDs {
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segIDStrs = append(segIDStrs, "/segment/"+strconv.FormatInt(segID, 10))
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}
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kvs := make(map[string]string)
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collStrs := proto.MarshalTextString(coll)
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kvs["/collection/"+strconv.FormatInt(coll.ID, 10)] = collStrs
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for _, segID := range segIDs {
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_, ok := mt.segID2Meta[segID]
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if ok {
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delete(mt.segID2Meta, segID)
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}
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}
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mt.collID2Meta[coll.ID] = *coll
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return mt.client.MultiSaveAndRemove(kvs, segIDStrs)
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}
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// metaTable.ddLock.Lock() before call this function
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func (mt *metaTable) saveCollectionsAndSegmentsMeta(coll *pb.CollectionMeta, seg *pb.SegmentMeta) error {
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kvs := make(map[string]string)
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collBytes := proto.MarshalTextString(coll)
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kvs["/collection/"+strconv.FormatInt(coll.ID, 10)] = collBytes
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mt.collID2Meta[coll.ID] = *coll
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mt.collName2ID[coll.Schema.Name] = coll.ID
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segBytes := proto.MarshalTextString(seg)
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kvs["/segment/"+strconv.FormatInt(seg.SegmentID, 10)] = segBytes
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mt.segID2Meta[seg.SegmentID] = *seg
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return mt.client.MultiSave(kvs)
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}
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// metaTable.ddLock.Lock() before call this function
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func (mt *metaTable) deleteCollectionsAndSegmentsMeta(collID UniqueID, segIDs []UniqueID) error {
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collIDStr := "/collection/" + strconv.FormatInt(collID, 10)
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totalIDStrs := make([]string, 0, 1+len(segIDs))
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totalIDStrs = append(totalIDStrs, collIDStr)
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for _, singleID := range segIDs {
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totalIDStrs = append(totalIDStrs, "/segment/"+strconv.FormatInt(singleID, 10))
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}
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collMeta, ok := mt.collID2Meta[collID]
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if ok {
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delete(mt.collID2Meta, collID)
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}
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_, ok = mt.collName2ID[collMeta.Schema.Name]
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if ok {
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delete(mt.collName2ID, collMeta.Schema.Name)
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}
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for _, segID := range segIDs {
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_, ok := mt.segID2Meta[segID]
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if ok {
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delete(mt.segID2Meta, segID)
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}
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}
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return mt.client.MultiRemove(totalIDStrs)
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}
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func (mt *metaTable) AddCollection(coll *pb.CollectionMeta) error {
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mt.ddLock.Lock()
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defer mt.ddLock.Unlock()
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if len(coll.SegmentIDs) != 0 {
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return errors.Errorf("segment should be empty when creating collection")
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}
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if len(coll.PartitionTags) == 0 {
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coll.PartitionTags = append(coll.PartitionTags, Params.DefaultPartitionTag)
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}
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_, ok := mt.collName2ID[coll.Schema.Name]
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if ok {
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return errors.Errorf("collection alread exists with name = " + coll.Schema.Name)
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}
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err := mt.saveCollectionMeta(coll)
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if err != nil {
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_ = mt.reloadFromKV()
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return err
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}
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return nil
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}
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func (mt *metaTable) DeleteCollection(collID UniqueID) error {
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mt.ddLock.Lock()
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defer mt.ddLock.Unlock()
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collMeta, ok := mt.collID2Meta[collID]
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if !ok {
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return errors.Errorf("can't find collection. id = " + strconv.FormatInt(collID, 10))
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}
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err := mt.deleteCollectionsAndSegmentsMeta(collID, collMeta.SegmentIDs)
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if err != nil {
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_ = mt.reloadFromKV()
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return err
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}
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// remove index meta
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for _, v := range collMeta.SegmentIDs {
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if err := mt.removeSegmentIndexMeta(v); err != nil {
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return err
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}
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}
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return nil
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}
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func (mt *metaTable) HasCollection(collID UniqueID) bool {
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mt.ddLock.RLock()
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defer mt.ddLock.RUnlock()
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_, ok := mt.collID2Meta[collID]
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return ok
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}
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func (mt *metaTable) GetCollectionByName(collectionName string) (*pb.CollectionMeta, error) {
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mt.ddLock.RLock()
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defer mt.ddLock.RUnlock()
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vid, ok := mt.collName2ID[collectionName]
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if !ok {
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return nil, errors.Errorf("can't find collection: " + collectionName)
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}
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col, ok := mt.collID2Meta[vid]
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if !ok {
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return nil, errors.Errorf("can't find collection: " + collectionName)
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}
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return &col, nil
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}
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func (mt *metaTable) ListCollections() ([]string, error) {
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mt.ddLock.RLock()
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defer mt.ddLock.RUnlock()
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colls := make([]string, 0, len(mt.collName2ID))
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for name := range mt.collName2ID {
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colls = append(colls, name)
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}
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return colls, nil
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}
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func (mt *metaTable) AddPartition(collID UniqueID, tag string) error {
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mt.ddLock.Lock()
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defer mt.ddLock.Unlock()
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coll, ok := mt.collID2Meta[collID]
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if !ok {
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return errors.Errorf("can't find collection. id = " + strconv.FormatInt(collID, 10))
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}
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// number of partition tags (except _default) should be limited to 4096 by default
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if int64(len(coll.PartitionTags)) > Params.MaxPartitionNum {
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return errors.New("maximum partition's number should be limit to " + strconv.FormatInt(Params.MaxPartitionNum, 10))
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}
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for _, t := range coll.PartitionTags {
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if t == tag {
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return errors.Errorf("partition already exists.")
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}
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}
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coll.PartitionTags = append(coll.PartitionTags, tag)
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err := mt.saveCollectionMeta(&coll)
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if err != nil {
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_ = mt.reloadFromKV()
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return err
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}
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return nil
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}
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func (mt *metaTable) HasPartition(collID UniqueID, tag string) bool {
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mt.ddLock.RLock()
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defer mt.ddLock.RUnlock()
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col, ok := mt.collID2Meta[collID]
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if !ok {
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return false
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}
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for _, partitionTag := range col.PartitionTags {
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if partitionTag == tag {
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return true
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}
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}
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return false
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}
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func (mt *metaTable) DeletePartition(collID UniqueID, tag string) error {
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mt.ddLock.Lock()
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defer mt.ddLock.Unlock()
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if tag == Params.DefaultPartitionTag {
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return errors.New("default partition cannot be deleted")
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}
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collMeta, ok := mt.collID2Meta[collID]
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if !ok {
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return errors.Errorf("can't find collection. id = " + strconv.FormatInt(collID, 10))
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}
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// check tag exists
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exist := false
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pt := make([]string, 0, len(collMeta.PartitionTags))
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for _, t := range collMeta.PartitionTags {
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if t != tag {
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pt = append(pt, t)
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} else {
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exist = true
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}
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}
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if !exist {
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return errors.New("partition " + tag + " does not exist")
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}
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if len(pt) == len(collMeta.PartitionTags) {
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return nil
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}
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toDeleteSeg := make([]UniqueID, 0, len(collMeta.SegmentIDs))
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seg := make([]UniqueID, 0, len(collMeta.SegmentIDs))
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for _, s := range collMeta.SegmentIDs {
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sm, ok := mt.segID2Meta[s]
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if !ok {
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return errors.Errorf("DeletePartition:can't find segment id = %d", s)
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}
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if sm.PartitionTag != tag {
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seg = append(seg, s)
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} else {
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toDeleteSeg = append(toDeleteSeg, s)
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}
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}
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collMeta.PartitionTags = pt
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collMeta.SegmentIDs = seg
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err := mt.saveCollectionAndDeleteSegmentsMeta(&collMeta, toDeleteSeg)
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if err != nil {
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_ = mt.reloadFromKV()
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return err
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}
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return nil
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}
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func (mt *metaTable) AddSegment(seg *pb.SegmentMeta) error {
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mt.ddLock.Lock()
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defer mt.ddLock.Unlock()
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collID := seg.CollectionID
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collMeta := mt.collID2Meta[collID]
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collMeta.SegmentIDs = append(collMeta.SegmentIDs, seg.SegmentID)
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err := mt.saveCollectionsAndSegmentsMeta(&collMeta, seg)
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if err != nil {
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_ = mt.reloadFromKV()
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return err
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}
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return nil
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}
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func (mt *metaTable) UpdateSegment(seg *pb.SegmentMeta) error {
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mt.ddLock.Lock()
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defer mt.ddLock.Unlock()
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collID := seg.CollectionID
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collMeta := mt.collID2Meta[collID]
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isNewSegID := true
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for _, segID := range collMeta.SegmentIDs {
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if segID == seg.SegmentID {
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isNewSegID = false
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break
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}
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}
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if isNewSegID {
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collMeta.SegmentIDs = append(collMeta.SegmentIDs, seg.SegmentID)
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if err := mt.saveCollectionsAndSegmentsMeta(&collMeta, seg); err != nil {
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_ = mt.reloadFromKV()
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return err
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}
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} else {
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if err := mt.saveSegmentMeta(seg); err != nil {
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_ = mt.reloadFromKV()
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return err
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}
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}
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return nil
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}
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func (mt *metaTable) GetSegmentByID(segID UniqueID) (*pb.SegmentMeta, error) {
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mt.ddLock.RLock()
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defer mt.ddLock.RUnlock()
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sm, ok := mt.segID2Meta[segID]
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if !ok {
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return nil, errors.Errorf("GetSegmentByID:can't find segment id = %d", segID)
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}
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return &sm, nil
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}
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func (mt *metaTable) DeleteSegment(segID UniqueID) error {
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mt.ddLock.Lock()
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defer mt.ddLock.Unlock()
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segMeta, ok := mt.segID2Meta[segID]
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if !ok {
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return errors.Errorf("DeleteSegment:can't find segment. id = " + strconv.FormatInt(segID, 10))
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}
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collMeta, ok := mt.collID2Meta[segMeta.CollectionID]
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if !ok {
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return errors.Errorf("can't find collection. id = " + strconv.FormatInt(segMeta.CollectionID, 10))
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}
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for i := 0; i < len(collMeta.SegmentIDs); i++ {
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if collMeta.SegmentIDs[i] == segID {
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collMeta.SegmentIDs = append(collMeta.SegmentIDs[:i], collMeta.SegmentIDs[i+1:]...)
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}
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}
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err := mt.saveCollectionAndDeleteSegmentsMeta(&collMeta, []UniqueID{segID})
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if err != nil {
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_ = mt.reloadFromKV()
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return err
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}
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return mt.removeSegmentIndexMeta(segID)
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}
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func (mt *metaTable) CloseSegment(segID UniqueID, closeTs Timestamp) error {
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mt.ddLock.Lock()
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defer mt.ddLock.Unlock()
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segMeta, ok := mt.segID2Meta[segID]
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if !ok {
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return errors.Errorf("CloseSegment:can't find segment id = " + strconv.FormatInt(segID, 10))
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}
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segMeta.CloseTime = closeTs
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err := mt.saveSegmentMeta(&segMeta)
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if err != nil {
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_ = mt.reloadFromKV()
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return err
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}
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return nil
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}
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func (mt *metaTable) AddFieldIndexMeta(meta *pb.FieldIndexMeta) error {
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mt.indexLock.Lock()
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defer mt.indexLock.Unlock()
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segID := meta.SegmentID
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if _, ok := mt.segID2IndexMetas[segID]; !ok {
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mt.segID2IndexMetas[segID] = make([]pb.FieldIndexMeta, 0)
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}
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for _, v := range mt.segID2IndexMetas[segID] {
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if v.FieldID == meta.FieldID && typeutil.CompareIndexParams(v.IndexParams, meta.IndexParams) {
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return fmt.Errorf("segment %d field id %d's index meta already exist", segID, meta.FieldID)
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}
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}
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mt.segID2IndexMetas[segID] = append(mt.segID2IndexMetas[segID], *meta)
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err := mt.saveFieldIndexMetaToEtcd(meta)
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if err != nil {
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_ = mt.reloadFromKV()
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return err
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}
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return nil
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}
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func (mt *metaTable) saveFieldIndexMetaToEtcd(meta *pb.FieldIndexMeta) error {
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key := "/indexmeta/" + strconv.FormatInt(meta.SegmentID, 10) + strconv.FormatInt(meta.FieldID, 10) + strconv.FormatInt(meta.IndexID, 10)
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marshaledMeta := proto.MarshalTextString(meta)
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return mt.client.Save(key, marshaledMeta)
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}
|
|
|
|
func (mt *metaTable) DeleteFieldIndexMeta(segID UniqueID, fieldID UniqueID, indexParams []*commonpb.KeyValuePair) error {
|
|
mt.indexLock.Lock()
|
|
defer mt.indexLock.Unlock()
|
|
|
|
if _, ok := mt.segID2IndexMetas[segID]; !ok {
|
|
return fmt.Errorf("can not find index meta of segment %d", segID)
|
|
}
|
|
|
|
for i, v := range mt.segID2IndexMetas[segID] {
|
|
if v.FieldID == fieldID && typeutil.CompareIndexParams(v.IndexParams, indexParams) {
|
|
mt.segID2IndexMetas[segID] = append(mt.segID2IndexMetas[segID][:i], mt.segID2IndexMetas[segID][i+1:]...)
|
|
err := mt.deleteFieldIndexMetaToEtcd(segID, fieldID, v.IndexID)
|
|
if err != nil {
|
|
_ = mt.reloadFromKV()
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
}
|
|
|
|
return fmt.Errorf("can not find index meta of field %d", fieldID)
|
|
}
|
|
|
|
func (mt *metaTable) deleteFieldIndexMetaToEtcd(segID UniqueID, fieldID UniqueID, indexID UniqueID) error {
|
|
key := "/indexmeta/" + strconv.FormatInt(segID, 10) + strconv.FormatInt(fieldID, 10) + strconv.FormatInt(indexID, 10)
|
|
return mt.client.Remove(key)
|
|
}
|
|
|
|
func (mt *metaTable) HasFieldIndexMeta(segID UniqueID, fieldID UniqueID, indexParams []*commonpb.KeyValuePair) (bool, error) {
|
|
mt.indexLock.RLock()
|
|
defer mt.indexLock.RUnlock()
|
|
|
|
if _, ok := mt.segID2IndexMetas[segID]; !ok {
|
|
return false, nil
|
|
}
|
|
|
|
for _, v := range mt.segID2IndexMetas[segID] {
|
|
if v.FieldID == fieldID && typeutil.CompareIndexParams(v.IndexParams, indexParams) {
|
|
return true, nil
|
|
}
|
|
}
|
|
return false, nil
|
|
}
|
|
|
|
func (mt *metaTable) GetFieldIndexMeta(segID UniqueID, fieldID UniqueID, indexParams []*commonpb.KeyValuePair) (*pb.FieldIndexMeta, error) {
|
|
mt.indexLock.RLock()
|
|
defer mt.indexLock.RUnlock()
|
|
|
|
if _, ok := mt.segID2IndexMetas[segID]; !ok {
|
|
return nil, fmt.Errorf("can not find segment %d", segID)
|
|
}
|
|
|
|
for _, v := range mt.segID2IndexMetas[segID] {
|
|
if v.FieldID == fieldID && typeutil.CompareIndexParams(v.IndexParams, indexParams) {
|
|
return &v, nil
|
|
}
|
|
}
|
|
return nil, fmt.Errorf("can not find field %d", fieldID)
|
|
}
|
|
|
|
func (mt *metaTable) UpdateFieldIndexMeta(meta *pb.FieldIndexMeta) error {
|
|
mt.indexLock.Lock()
|
|
defer mt.indexLock.Unlock()
|
|
|
|
segID := meta.SegmentID
|
|
if _, ok := mt.segID2IndexMetas[segID]; !ok {
|
|
mt.segID2IndexMetas[segID] = make([]pb.FieldIndexMeta, 0)
|
|
}
|
|
for i, v := range mt.segID2IndexMetas[segID] {
|
|
if v.FieldID == meta.FieldID && typeutil.CompareIndexParams(v.IndexParams, meta.IndexParams) {
|
|
mt.segID2IndexMetas[segID][i] = *meta
|
|
err := mt.deleteFieldIndexMetaToEtcd(segID, v.FieldID, v.IndexID)
|
|
if err != nil {
|
|
_ = mt.reloadFromKV()
|
|
return err
|
|
}
|
|
err = mt.saveFieldIndexMetaToEtcd(meta)
|
|
if err != nil {
|
|
_ = mt.reloadFromKV()
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
}
|
|
|
|
mt.segID2IndexMetas[segID] = append(mt.segID2IndexMetas[segID], *meta)
|
|
err := mt.saveFieldIndexMetaToEtcd(meta)
|
|
if err != nil {
|
|
_ = mt.reloadFromKV()
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (mt *metaTable) removeSegmentIndexMeta(segID UniqueID) error {
|
|
mt.indexLock.Lock()
|
|
defer mt.indexLock.Unlock()
|
|
|
|
delete(mt.segID2IndexMetas, segID)
|
|
keys, _, err := mt.client.LoadWithPrefix("indexmeta/" + strconv.FormatInt(segID, 10))
|
|
if err != nil {
|
|
_ = mt.reloadFromKV()
|
|
return err
|
|
}
|
|
if err = mt.client.MultiRemove(keys); err != nil {
|
|
_ = mt.reloadFromKV()
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (mt *metaTable) GetFieldIndexParams(collID UniqueID, fieldID UniqueID) ([]*commonpb.KeyValuePair, error) {
|
|
mt.ddLock.RLock()
|
|
defer mt.ddLock.RUnlock()
|
|
|
|
if _, ok := mt.collID2Meta[collID]; !ok {
|
|
return nil, fmt.Errorf("can not find collection with id %d", collID)
|
|
}
|
|
|
|
for _, fieldSchema := range mt.collID2Meta[collID].Schema.Fields {
|
|
if fieldSchema.FieldID == fieldID {
|
|
return fieldSchema.IndexParams, nil
|
|
}
|
|
}
|
|
return nil, fmt.Errorf("can not find field %d in collection %d", fieldID, collID)
|
|
}
|
|
|
|
func (mt *metaTable) UpdateFieldIndexParams(collName string, fieldName string, indexParams []*commonpb.KeyValuePair) error {
|
|
mt.ddLock.Lock()
|
|
defer mt.ddLock.Unlock()
|
|
|
|
vid, ok := mt.collName2ID[collName]
|
|
if !ok {
|
|
return errors.Errorf("can't find collection: " + collName)
|
|
}
|
|
meta, ok := mt.collID2Meta[vid]
|
|
if !ok {
|
|
return errors.Errorf("can't find collection: " + collName)
|
|
}
|
|
|
|
for _, fieldSchema := range meta.Schema.Fields {
|
|
if fieldSchema.Name == fieldName {
|
|
fieldSchema.IndexParams = indexParams
|
|
if err := mt.saveCollectionMeta(&meta); err != nil {
|
|
_ = mt.reloadFromKV()
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
}
|
|
|
|
return fmt.Errorf("can not find field with id %s", fieldName)
|
|
}
|