Merge branch 'fix-logger' of github.com:tgruben/pilosa into fix-logger

api.go

@@ -327,6 +327,38 @@ func (api *API) DeleteField(_ context.Context, indexName string, fieldName strin
 	return nil
 }
 
+// DeleteAvailableShard a shard ID from the available shard set cache.
+func (api *API) DeleteAvailableShard(_ context.Context, indexName, fieldName string, shardID uint64) error {
+	if err := api.validate(apiDeleteAvailableShard); err != nil {
+		return errors.Wrap(err, "validating api method")
+	}
+
+	// Find field.
+	field := api.holder.Field(indexName, fieldName)
+	if field == nil {
+		return newNotFoundError(ErrFieldNotFound)
+	}
+
+	// Delete shard from the cache.
+	if err := field.RemoveAvailableShard(shardID); err != nil {
+		return errors.Wrap(err, "deleting available shard")
+	}
+
+	// Send the delete shard message to all nodes.
+	err := api.server.SendSync(
+		&DeleteAvailableShardMessage{
+			Index:   indexName,
+			Field:   fieldName,
+			ShardID: shardID,
+		})
+	if err != nil {
+		api.server.logger.Printf("problem sending DeleteAvailableShard message: %s", err)
+		return errors.Wrap(err, "sending DeleteAvailableShard message")
+	}
+	api.holder.Stats.CountWithCustomTags("deleteAvailableShard", 1, 1.0, []string{fmt.Sprintf("index:%s", indexName), fmt.Sprintf("field:%s", fieldName)})
+	return nil
+}
+
 // ExportCSV encodes the fragment designated by the index,field,shard as
 // CSV of the form <row>,<col>
 func (api *API) ExportCSV(_ context.Context, indexName string, fieldName string, shard uint64, w io.Writer) error {
@@ -914,6 +946,7 @@ const (
 	apiCreateField
 	apiCreateIndex
 	apiDeleteField
+	apiDeleteAvailableShard
 	apiDeleteIndex
 	apiDeleteView
 	apiExportCSV
@@ -952,23 +985,24 @@ var methodsResizing = map[apiMethod]struct{}{
 }
 
 var methodsNormal = map[apiMethod]struct{}{
-	apiCreateField:       {},
-	apiCreateIndex:       {},
-	apiDeleteField:       {},
-	apiDeleteIndex:       {},
-	apiDeleteView:        {},
-	apiExportCSV:         {},
-	apiFragmentBlockData: {},
-	apiFragmentBlocks:    {},
-	apiField:             {},
-	apiFieldAttrDiff:     {},
-	apiImport:            {},
-	apiImportValue:       {},
-	apiIndex:             {},
-	apiIndexAttrDiff:     {},
-	apiQuery:             {},
-	apiRecalculateCaches: {},
-	apiRemoveNode:        {},
-	apiShardNodes:        {},
-	apiViews:             {},
+	apiCreateField:          {},
+	apiCreateIndex:          {},
+	apiDeleteField:          {},
+	apiDeleteAvailableShard: {},
+	apiDeleteIndex:          {},
+	apiDeleteView:           {},
+	apiExportCSV:            {},
+	apiFragmentBlockData:    {},
+	apiFragmentBlocks:       {},
+	apiField:                {},
+	apiFieldAttrDiff:        {},
+	apiImport:               {},
+	apiImportValue:          {},
+	apiIndex:                {},
+	apiIndexAttrDiff:        {},
+	apiQuery:                {},
+	apiRecalculateCaches:    {},
+	apiRemoveNode:           {},
+	apiShardNodes:           {},
+	apiViews:                {},
 }

cluster.go

@@ -1946,6 +1946,12 @@ type DeleteFieldMessage struct {
 	Field string
 }
 
+type DeleteAvailableShardMessage struct {
+	Index   string
+	Field   string
+	ShardID uint64
+}
+
 type CreateViewMessage struct {
 	Index string
 	Field string

encoding/proto/proto.go

@@ -81,6 +81,14 @@ func (Serializer) Unmarshal(buf []byte, m pilosa.Message) error {
 		}
 		decodeDeleteFieldMessage(msg, mt)
 		return nil
+	case *pilosa.DeleteAvailableShardMessage:
+		msg := &internal.DeleteAvailableShardMessage{}
+		err := proto.Unmarshal(buf, msg)
+		if err != nil {
+			return errors.Wrap(err, "unmarshaling DeleteAvailableShardMessage")
+		}
+		decodeDeleteAvailableShardMessage(msg, mt)
+		return nil
 	case *pilosa.CreateViewMessage:
 		msg := &internal.CreateViewMessage{}
 		err := proto.Unmarshal(buf, msg)
@@ -250,6 +258,8 @@ func encodeToProto(m pilosa.Message) proto.Message {
 		return encodeCreateFieldMessage(mt)
 	case *pilosa.DeleteFieldMessage:
 		return encodeDeleteFieldMessage(mt)
+	case *pilosa.DeleteAvailableShardMessage:
+		return encodeDeleteAvailableShardMessage(mt)
 	case *pilosa.CreateViewMessage:
 		return encodeCreateViewMessage(mt)
 	case *pilosa.DeleteViewMessage:
@@ -549,6 +559,14 @@ func encodeDeleteFieldMessage(m *pilosa.DeleteFieldMessage) *internal.DeleteFiel
 	}
 }
 
+func encodeDeleteAvailableShardMessage(m *pilosa.DeleteAvailableShardMessage) *internal.DeleteAvailableShardMessage {
+	return &internal.DeleteAvailableShardMessage{
+		Index:   m.Index,
+		Field:   m.Field,
+		ShardID: m.ShardID,
+	}
+}
+
 func encodeCreateViewMessage(m *pilosa.CreateViewMessage) *internal.CreateViewMessage {
 	return &internal.CreateViewMessage{
 		Index: m.Index,
@@ -775,6 +793,12 @@ func decodeDeleteFieldMessage(pb *internal.DeleteFieldMessage, m *pilosa.DeleteF
 	m.Field = pb.Field
 }
 
+func decodeDeleteAvailableShardMessage(pb *internal.DeleteAvailableShardMessage, m *pilosa.DeleteAvailableShardMessage) {
+	m.Index = pb.Index
+	m.Field = pb.Field
+	m.ShardID = pb.ShardID
+}
+
 func decodeCreateViewMessage(pb *internal.CreateViewMessage, m *pilosa.CreateViewMessage) {
 	m.Index = pb.Index
 	m.Field = pb.Field

field.go

@@ -230,9 +230,9 @@ func (f *Field) AvailableShards() *roaring.Bitmap {
 	return b
 }
 
-// addRemoteAvailableShards merges the set of available shards into the current known set
+// AddRemoteAvailableShards merges the set of available shards into the current known set
 // and saves the set to a file.
-func (f *Field) addRemoteAvailableShards(b *roaring.Bitmap) error {
+func (f *Field) AddRemoteAvailableShards(b *roaring.Bitmap) error {
 	f.mergeRemoteAvailableShards(b)
 
 	// Save the updated bitmap to the data store.
@@ -246,6 +246,22 @@ func (f *Field) mergeRemoteAvailableShards(b *roaring.Bitmap) {
 	f.remoteAvailableShards = f.remoteAvailableShards.Union(b)
 }
 
+// RemoveAvailableShard removes a shard from the bitmap cache.
+//
+// NOTE: This can be overridden on the next sync so all nodes should be updated.
+func (f *Field) RemoveAvailableShard(v uint64) error {
+	f.mu.RLock()
+	defer f.mu.RUnlock()
+
+	b := f.remoteAvailableShards.Clone()
+	if _, err := b.Remove(v); err != nil {
+		return err
+	}
+	f.remoteAvailableShards = b
+
+	return f.saveAvailableShards()
+}
+
 // Type returns the field type.
 func (f *Field) Type() string {
 	f.mu.RLock()

field_internal_test.go

@@ -349,7 +349,7 @@ func TestField_PersistAvailableShards(t *testing.T) {
 	// bm represents remote available shards.
 	bm := roaring.NewBitmap(1, 2, 3)
 
-	if err := f.addRemoteAvailableShards(bm); err != nil {
+	if err := f.AddRemoteAvailableShards(bm); err != nil {
 		t.Fatal(err)
 	}
 

field_test.go

@@ -18,7 +18,9 @@ import (
 	"io/ioutil"
 	"testing"
 
+	"github.com/google/go-cmp/cmp"
 	"github.com/pilosa/pilosa"
+	"github.com/pilosa/pilosa/roaring"
 	"github.com/pilosa/pilosa/test"
 )
 
@@ -185,3 +187,39 @@ func TestField_NameValidation(t *testing.T) {
 		}
 	}
 }
+
+// Ensure can update and delete available shards.
+func TestField_AvailableShards(t *testing.T) {
+	idx := test.MustOpenIndex()
+	defer idx.Close()
+
+	f, err := idx.CreateField("f", pilosa.OptFieldTypeDefault())
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Set values on shards 0 & 2, and verify.
+	if _, err := f.SetBit(0, 100, nil); err != nil {
+		t.Fatal(err)
+	} else if _, err := f.SetBit(0, ShardWidth*2, nil); err != nil {
+		t.Fatal(err)
+	} else if diff := cmp.Diff(f.AvailableShards().Slice(), []uint64{0, 2}); diff != "" {
+		t.Fatal(diff)
+	}
+
+	// Set remote shards and verify.
+	f.AddRemoteAvailableShards(roaring.NewBitmap(1, 2, 4))
+	if diff := cmp.Diff(f.AvailableShards().Slice(), []uint64{0, 1, 2, 4}); diff != "" {
+		t.Fatal(diff)
+	}
+
+	// Delete shards; only local shards should remain.
+	f.RemoveAvailableShard(0)
+	f.RemoveAvailableShard(1)
+	f.RemoveAvailableShard(2)
+	f.RemoveAvailableShard(3)
+	f.RemoveAvailableShard(4)
+	if diff := cmp.Diff(f.AvailableShards().Slice(), []uint64{0, 2}); diff != "" {
+		t.Fatal(diff)
+	}
+}

holder_internal_test.go

@@ -209,8 +209,8 @@ func TestHolderCleaner_CleanHolder(t *testing.T) {
 	hldr0.SetBit("y", "z", 10, (2*ShardWidth)+7)
 
 	// Set highest shard.
-	hldr0.Field("i", "f").addRemoteAvailableShards(roaring.NewBitmap(0, 1))
-	hldr0.Field("y", "z").addRemoteAvailableShards(roaring.NewBitmap(0, 1, 2))
+	hldr0.Field("i", "f").AddRemoteAvailableShards(roaring.NewBitmap(0, 1))
+	hldr0.Field("y", "z").AddRemoteAvailableShards(roaring.NewBitmap(0, 1, 2))
 
 	// Keep replication the same and ensure we get the expected results.
 	cluster.ReplicaN = 2

http/handler.go

@@ -255,6 +255,7 @@ func newRouter(handler *Handler) *mux.Router {
 	router.HandleFunc("/internal/fragment/nodes", handler.handleGetFragmentNodes).Methods("GET").Name("GetFragmentNodes")
 	router.HandleFunc("/internal/index/{index}/attr/diff", handler.handlePostIndexAttrDiff).Methods("POST").Name("PostIndexAttrDiff")
 	router.HandleFunc("/internal/index/{index}/field/{field}/attr/diff", handler.handlePostFieldAttrDiff).Methods("POST").Name("PostFieldAttrDiff")
+	router.HandleFunc("/internal/index/{index}/field/{field}/remote-available-shards/{shardID}", handler.handleDeleteRemoteAvailableShard).Methods("DELETE")
 	router.HandleFunc("/internal/nodes", handler.handleGetNodes).Methods("GET").Name("GetNodes")
 	router.HandleFunc("/internal/shards/max", handler.handleGetShardsMax).Methods("GET").Name("GetShardsMax") // TODO: deprecate, but it's being used by the client
 	router.HandleFunc("/internal/translate/data", handler.handleGetTranslateData).Methods("GET").Name("GetTranslateData")
@@ -846,6 +847,22 @@ func (h *Handler) handleDeleteField(w http.ResponseWriter, r *http.Request) {
 	resp.write(w, err)
 }
 
+// handleDeleteRemoteAvailableShard handles DELETE /field/{field}/available-shards/{shardID} request.
+func (h *Handler) handleDeleteRemoteAvailableShard(w http.ResponseWriter, r *http.Request) {
+	if !validHeaderAcceptJSON(r.Header) {
+		http.Error(w, "JSON only acceptable response", http.StatusNotAcceptable)
+		return
+	}
+
+	indexName := mux.Vars(r)["index"]
+	fieldName := mux.Vars(r)["field"]
+	shardID, _ := strconv.ParseUint(mux.Vars(r)["shardID"], 10, 64)
+
+	resp := successResponse{}
+	err := h.api.DeleteAvailableShard(r.Context(), indexName, fieldName, shardID)
+	resp.write(w, err)
+}
+
 // handlePostFieldAttrDiff handles POST /internal/field/attr/diff requests.
 func (h *Handler) handlePostFieldAttrDiff(w http.ResponseWriter, r *http.Request) {
 	if !validHeaderAcceptJSON(r.Header) {

internal/private.pb.go

@@ -20,6 +20,7 @@
 		CreateIndexMessage
 		CreateFieldMessage
 		DeleteFieldMessage
+		DeleteAvailableShardMessage
 		Field
 		Schema
 		Index
@@ -397,6 +398,40 @@ func (m *DeleteFieldMessage) GetField() string {
 	return ""
 }
 
+type DeleteAvailableShardMessage struct {
+	Index   string `protobuf:"bytes,1,opt,name=Index,proto3" json:"Index,omitempty"`
+	Field   string `protobuf:"bytes,2,opt,name=Field,proto3" json:"Field,omitempty"`
+	ShardID uint64 `protobuf:"varint,3,opt,name=ShardID,proto3" json:"ShardID,omitempty"`
+}
+
+func (m *DeleteAvailableShardMessage) Reset()         { *m = DeleteAvailableShardMessage{} }
+func (m *DeleteAvailableShardMessage) String() string { return proto.CompactTextString(m) }
+func (*DeleteAvailableShardMessage) ProtoMessage()    {}
+func (*DeleteAvailableShardMessage) Descriptor() ([]byte, []int) {
+	return fileDescriptorPrivate, []int{12}
+}
+
+func (m *DeleteAvailableShardMessage) GetIndex() string {
+	if m != nil {
+		return m.Index
+	}
+	return ""
+}
+
+func (m *DeleteAvailableShardMessage) GetField() string {
+	if m != nil {
+		return m.Field
+	}
+	return ""
+}
+
+func (m *DeleteAvailableShardMessage) GetShardID() uint64 {
+	if m != nil {
+		return m.ShardID
+	}
+	return 0
+}
+
 type Field struct {
 	Name  string        `protobuf:"bytes,1,opt,name=Name,proto3" json:"Name,omitempty"`
 	Meta  *FieldOptions `protobuf:"bytes,2,opt,name=Meta" json:"Meta,omitempty"`
@@ -406,7 +441,7 @@ type Field struct {
 func (m *Field) Reset()                    { *m = Field{} }
 func (m *Field) String() string            { return proto.CompactTextString(m) }
 func (*Field) ProtoMessage()               {}
-func (*Field) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{12} }
+func (*Field) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{13} }
 
 func (m *Field) GetName() string {
 	if m != nil {
@@ -436,7 +471,7 @@ type Schema struct {
 func (m *Schema) Reset()                    { *m = Schema{} }
 func (m *Schema) String() string            { return proto.CompactTextString(m) }
 func (*Schema) ProtoMessage()               {}
-func (*Schema) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{13} }
+func (*Schema) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{14} }
 
 func (m *Schema) GetIndexes() []*Index {
 	if m != nil {
@@ -453,7 +488,7 @@ type Index struct {
 func (m *Index) Reset()                    { *m = Index{} }
 func (m *Index) String() string            { return proto.CompactTextString(m) }
 func (*Index) ProtoMessage()               {}
-func (*Index) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{14} }
+func (*Index) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{15} }
 
 func (m *Index) GetName() string {
 	if m != nil {
@@ -478,7 +513,7 @@ type URI struct {
 func (m *URI) Reset()                    { *m = URI{} }
 func (m *URI) String() string            { return proto.CompactTextString(m) }
 func (*URI) ProtoMessage()               {}
-func (*URI) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{15} }
+func (*URI) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{16} }
 
 func (m *URI) GetScheme() string {
 	if m != nil {
@@ -510,7 +545,7 @@ type Node struct {
 func (m *Node) Reset()                    { *m = Node{} }
 func (m *Node) String() string            { return proto.CompactTextString(m) }
 func (*Node) ProtoMessage()               {}
-func (*Node) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{16} }
+func (*Node) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{17} }
 
 func (m *Node) GetID() string {
 	if m != nil {
@@ -541,7 +576,7 @@ type NodeStateMessage struct {
 func (m *NodeStateMessage) Reset()                    { *m = NodeStateMessage{} }
 func (m *NodeStateMessage) String() string            { return proto.CompactTextString(m) }
 func (*NodeStateMessage) ProtoMessage()               {}
-func (*NodeStateMessage) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{17} }
+func (*NodeStateMessage) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{18} }
 
 func (m *NodeStateMessage) GetNodeID() string {
 	if m != nil {
@@ -565,7 +600,7 @@ type NodeEventMessage struct {
 func (m *NodeEventMessage) Reset()                    { *m = NodeEventMessage{} }
 func (m *NodeEventMessage) String() string            { return proto.CompactTextString(m) }
 func (*NodeEventMessage) ProtoMessage()               {}
-func (*NodeEventMessage) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{18} }
+func (*NodeEventMessage) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{19} }
 
 func (m *NodeEventMessage) GetEvent() uint32 {
 	if m != nil {
@@ -590,7 +625,7 @@ type NodeStatus struct {
 func (m *NodeStatus) Reset()                    { *m = NodeStatus{} }
 func (m *NodeStatus) String() string            { return proto.CompactTextString(m) }
 func (*NodeStatus) ProtoMessage()               {}
-func (*NodeStatus) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{19} }
+func (*NodeStatus) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{20} }
 
 func (m *NodeStatus) GetNode() *Node {
 	if m != nil {
@@ -621,7 +656,7 @@ type IndexStatus struct {
 func (m *IndexStatus) Reset()                    { *m = IndexStatus{} }
 func (m *IndexStatus) String() string            { return proto.CompactTextString(m) }
 func (*IndexStatus) ProtoMessage()               {}
-func (*IndexStatus) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{20} }
+func (*IndexStatus) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{21} }
 
 func (m *IndexStatus) GetName() string {
 	if m != nil {
@@ -645,7 +680,7 @@ type FieldStatus struct {
 func (m *FieldStatus) Reset()                    { *m = FieldStatus{} }
 func (m *FieldStatus) String() string            { return proto.CompactTextString(m) }
 func (*FieldStatus) ProtoMessage()               {}
-func (*FieldStatus) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{21} }
+func (*FieldStatus) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{22} }
 
 func (m *FieldStatus) GetName() string {
 	if m != nil {
@@ -670,7 +705,7 @@ type ClusterStatus struct {
 func (m *ClusterStatus) Reset()                    { *m = ClusterStatus{} }
 func (m *ClusterStatus) String() string            { return proto.CompactTextString(m) }
 func (*ClusterStatus) ProtoMessage()               {}
-func (*ClusterStatus) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{22} }
+func (*ClusterStatus) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{23} }
 
 func (m *ClusterStatus) GetClusterID() string {
 	if m != nil {
@@ -703,7 +738,7 @@ type BSIGroup struct {
 func (m *BSIGroup) Reset()                    { *m = BSIGroup{} }
 func (m *BSIGroup) String() string            { return proto.CompactTextString(m) }
 func (*BSIGroup) ProtoMessage()               {}
-func (*BSIGroup) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{23} }
+func (*BSIGroup) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{24} }
 
 func (m *BSIGroup) GetName() string {
 	if m != nil {
@@ -742,7 +777,7 @@ type CreateViewMessage struct {
 func (m *CreateViewMessage) Reset()                    { *m = CreateViewMessage{} }
 func (m *CreateViewMessage) String() string            { return proto.CompactTextString(m) }
 func (*CreateViewMessage) ProtoMessage()               {}
-func (*CreateViewMessage) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{24} }
+func (*CreateViewMessage) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{25} }
 
 func (m *CreateViewMessage) GetIndex() string {
 	if m != nil {
@@ -774,7 +809,7 @@ type DeleteViewMessage struct {
 func (m *DeleteViewMessage) Reset()                    { *m = DeleteViewMessage{} }
 func (m *DeleteViewMessage) String() string            { return proto.CompactTextString(m) }
 func (*DeleteViewMessage) ProtoMessage()               {}
-func (*DeleteViewMessage) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{25} }
+func (*DeleteViewMessage) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{26} }
 
 func (m *DeleteViewMessage) GetIndex() string {
 	if m != nil {
@@ -809,7 +844,7 @@ type ResizeInstruction struct {
 func (m *ResizeInstruction) Reset()                    { *m = ResizeInstruction{} }
 func (m *ResizeInstruction) String() string            { return proto.CompactTextString(m) }
 func (*ResizeInstruction) ProtoMessage()               {}
-func (*ResizeInstruction) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{26} }
+func (*ResizeInstruction) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{27} }
 
 func (m *ResizeInstruction) GetJobID() int64 {
 	if m != nil {
@@ -864,7 +899,7 @@ type ResizeSource struct {
 func (m *ResizeSource) Reset()                    { *m = ResizeSource{} }
 func (m *ResizeSource) String() string            { return proto.CompactTextString(m) }
 func (*ResizeSource) ProtoMessage()               {}
-func (*ResizeSource) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{27} }
+func (*ResizeSource) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{28} }
 
 func (m *ResizeSource) GetNode() *Node {
 	if m != nil {
@@ -911,7 +946,7 @@ func (m *ResizeInstructionComplete) Reset()         { *m = ResizeInstructionComp
 func (m *ResizeInstructionComplete) String() string { return proto.CompactTextString(m) }
 func (*ResizeInstructionComplete) ProtoMessage()    {}
 func (*ResizeInstructionComplete) Descriptor() ([]byte, []int) {
-	return fileDescriptorPrivate, []int{28}
+	return fileDescriptorPrivate, []int{29}
 }
 
 func (m *ResizeInstructionComplete) GetJobID() int64 {
@@ -942,7 +977,7 @@ type SetCoordinatorMessage struct {
 func (m *SetCoordinatorMessage) Reset()                    { *m = SetCoordinatorMessage{} }
 func (m *SetCoordinatorMessage) String() string            { return proto.CompactTextString(m) }
 func (*SetCoordinatorMessage) ProtoMessage()               {}
-func (*SetCoordinatorMessage) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{29} }
+func (*SetCoordinatorMessage) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{30} }
 
 func (m *SetCoordinatorMessage) GetNew() *Node {
 	if m != nil {
@@ -958,7 +993,7 @@ type UpdateCoordinatorMessage struct {
 func (m *UpdateCoordinatorMessage) Reset()                    { *m = UpdateCoordinatorMessage{} }
 func (m *UpdateCoordinatorMessage) String() string            { return proto.CompactTextString(m) }
 func (*UpdateCoordinatorMessage) ProtoMessage()               {}
-func (*UpdateCoordinatorMessage) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{30} }
+func (*UpdateCoordinatorMessage) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{31} }
 
 func (m *UpdateCoordinatorMessage) GetNew() *Node {
 	if m != nil {
@@ -975,7 +1010,7 @@ type Topology struct {
 func (m *Topology) Reset()                    { *m = Topology{} }
 func (m *Topology) String() string            { return proto.CompactTextString(m) }
 func (*Topology) ProtoMessage()               {}
-func (*Topology) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{31} }
+func (*Topology) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{32} }
 
 func (m *Topology) GetClusterID() string {
 	if m != nil {
@@ -997,7 +1032,7 @@ type RecalculateCaches struct {
 func (m *RecalculateCaches) Reset()                    { *m = RecalculateCaches{} }
 func (m *RecalculateCaches) String() string            { return proto.CompactTextString(m) }
 func (*RecalculateCaches) ProtoMessage()               {}
-func (*RecalculateCaches) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{32} }
+func (*RecalculateCaches) Descriptor() ([]byte, []int) { return fileDescriptorPrivate, []int{33} }
 
 func init() {
 	proto.RegisterType((*IndexMeta)(nil), "internal.IndexMeta")
@@ -1012,6 +1047,7 @@ func init() {
 	proto.RegisterType((*CreateIndexMessage)(nil), "internal.CreateIndexMessage")
 	proto.RegisterType((*CreateFieldMessage)(nil), "internal.CreateFieldMessage")
 	proto.RegisterType((*DeleteFieldMessage)(nil), "internal.DeleteFieldMessage")
+	proto.RegisterType((*DeleteAvailableShardMessage)(nil), "internal.DeleteAvailableShardMessage")
 	proto.RegisterType((*Field)(nil), "internal.Field")
 	proto.RegisterType((*Schema)(nil), "internal.Schema")
 	proto.RegisterType((*Index)(nil), "internal.Index")
@@ -1487,6 +1523,41 @@ func (m *DeleteFieldMessage) MarshalTo(dAtA []byte) (int, error) {
 	return i, nil
 }
 
+func (m *DeleteAvailableShardMessage) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalTo(dAtA)
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *DeleteAvailableShardMessage) MarshalTo(dAtA []byte) (int, error) {
+	var i int
+	_ = i
+	var l int
+	_ = l
+	if len(m.Index) > 0 {
+		dAtA[i] = 0xa
+		i++
+		i = encodeVarintPrivate(dAtA, i, uint64(len(m.Index)))
+		i += copy(dAtA[i:], m.Index)
+	}
+	if len(m.Field) > 0 {
+		dAtA[i] = 0x12
+		i++
+		i = encodeVarintPrivate(dAtA, i, uint64(len(m.Field)))
+		i += copy(dAtA[i:], m.Field)
+	}
+	if m.ShardID != 0 {
+		dAtA[i] = 0x18
+		i++
+		i = encodeVarintPrivate(dAtA, i, uint64(m.ShardID))
+	}
+	return i, nil
+}
+
 func (m *Field) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
@@ -2508,6 +2579,23 @@ func (m *DeleteFieldMessage) Size() (n int) {
 	return n
 }
 
+func (m *DeleteAvailableShardMessage) Size() (n int) {
+	var l int
+	_ = l
+	l = len(m.Index)
+	if l > 0 {
+		n += 1 + l + sovPrivate(uint64(l))
+	}
+	l = len(m.Field)
+	if l > 0 {
+		n += 1 + l + sovPrivate(uint64(l))
+	}
+	if m.ShardID != 0 {
+		n += 1 + sovPrivate(uint64(m.ShardID))
+	}
+	return n
+}
+
 func (m *Field) Size() (n int) {
 	var l int
 	_ = l
@@ -4442,6 +4530,133 @@ func (m *DeleteFieldMessage) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *DeleteAvailableShardMessage) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowPrivate
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: DeleteAvailableShardMessage: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: DeleteAvailableShardMessage: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Index", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPrivate
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthPrivate
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Index = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Field", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPrivate
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLengthPrivate
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Field = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		case 3:
+			if wireType != 0 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ShardID", wireType)
+			}
+			m.ShardID = 0
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowPrivate
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				m.ShardID |= (uint64(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+		default:
+			iNdEx = preIndex
+			skippy, err := skipPrivate(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if skippy < 0 {
+				return ErrInvalidLengthPrivate
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func (m *Field) Unmarshal(dAtA []byte) error {
 	l := len(dAtA)
 	iNdEx := 0
@@ -7184,74 +7399,75 @@ var (
 func init() { proto.RegisterFile("private.proto", fileDescriptorPrivate) }
 
 var fileDescriptorPrivate = []byte{
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+	// 1113 bytes of a gzipped FileDescriptorProto
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+	0x97, 0x61, 0xb1, 0xb1, 0xf4, 0xc7, 0xc9, 0x8a, 0xf3, 0xe7, 0xc9, 0x8a, 0xf3, 0xd7, 0xc9, 0x8a,
+	0xf3, 0xeb, 0xdf, 0x2b, 0x6f, 0xec, 0xb5, 0xf1, 0x9f, 0xc3, 0xc3, 0x7f, 0x02, 0x00, 0x00, 0xff,
+	0xff, 0xba, 0x1b, 0x62, 0x68, 0x4a, 0x0c, 0x00, 0x00,
 }

internal/private.proto

@@ -68,6 +68,12 @@ message DeleteFieldMessage {
     string Field = 2;
 }
 
+message DeleteAvailableShardMessage {
+    string Index = 1;
+    string Field = 2;
+    uint64 ShardID = 3;
+}
+
 message Field {
     string Name = 1;
     FieldOptions Meta = 2;

server.go

@@ -483,7 +483,7 @@ func (s *Server) receiveMessage(m Message) error {
 		if f == nil {
 			return fmt.Errorf("Local field not found: %s/%s", obj.Index, obj.Field)
 		}
-		if err := f.addRemoteAvailableShards(roaring.NewBitmap(obj.Shard)); err != nil {
+		if err := f.AddRemoteAvailableShards(roaring.NewBitmap(obj.Shard)); err != nil {
 			return errors.Wrap(err, "adding remote available shards")
 		}
 	case *CreateIndexMessage:
@@ -511,6 +511,11 @@ func (s *Server) receiveMessage(m Message) error {
 		if err := idx.DeleteField(obj.Field); err != nil {
 			return err
 		}
+	case *DeleteAvailableShardMessage:
+		f := s.holder.Field(obj.Index, obj.Field)
+		if err := f.RemoveAvailableShard(obj.ShardID); err != nil {
+			return err
+		}
 	case *CreateViewMessage:
 		f := s.holder.Field(obj.Index, obj.Field)
 		if f == nil {
@@ -650,7 +655,7 @@ func (s *Server) mergeRemoteStatus(ns *NodeStatus) error {
 				s.logger.Printf("Local Field not found: %s/%s", is.Name, fs.Name)
 				continue
 			}
-			if err := f.addRemoteAvailableShards(fs.AvailableShards); err != nil {
+			if err := f.AddRemoteAvailableShards(fs.AvailableShards); err != nil {
 				return errors.Wrap(err, "adding remote available shards")
 			}
 		}