feat(coordinator): assign static prover first and avoid reassigning failed task to same prover

coordinator/conf/config.json

@@ -2,6 +2,7 @@
   "prover_manager": {
     "provers_per_session": 1,
     "session_attempts": 5,
+    "external_prover_threshold": 32,
     "bundle_collection_time_sec": 180,
     "batch_collection_time_sec": 180,
     "chunk_collection_time_sec": 180,

coordinator/internal/config/config.go

@@ -16,6 +16,8 @@ type ProverManager struct {
 	// Number of attempts that a session can be retried if previous attempts failed.
 	// Currently we only consider proving timeout as failure here.
 	SessionAttempts uint8 `json:"session_attempts"`
+	// Threshold for activating the external prover based on unassigned task count.
+	ExternalProverThreshold int64 `json:"external_prover_threshold"`
 	// Zk verifier config.
 	Verifier *VerifierConfig `json:"verifier"`
 	// BatchCollectionTimeSec batch Proof collection time (in seconds).

coordinator/internal/logic/provertask/batch_prover_task.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"strings"
 	"time"
 
 	"github.com/gin-gonic/gin"
@@ -63,29 +64,59 @@ func (bp *BatchProverTask) Assign(ctx *gin.Context, getTaskParameter *coordinato
 
 	maxActiveAttempts := bp.cfg.ProverManager.ProversPerSession
 	maxTotalAttempts := bp.cfg.ProverManager.SessionAttempts
+	if strings.HasPrefix(taskCtx.ProverName, ExternalProverNamePrefix) {
+		unassignedBatchCount, getCountError := bp.batchOrm.GetUnassignedBatchCount(ctx.Copy(), maxActiveAttempts, maxTotalAttempts)
+		if getCountError != nil {
+			log.Error("failed to get unassigned batch proving tasks count", "height", getTaskParameter.ProverHeight, "err", err)
+			return nil, ErrCoordinatorInternalFailure
+		}
+		// Assign external prover if unassigned task number exceeds threshold
+		if unassignedBatchCount < bp.cfg.ProverManager.ExternalProverThreshold {
+			return nil, nil
+		}
+	}
+
 	var batchTask *orm.Batch
 	for i := 0; i < 5; i++ {
 		var getTaskError error
 		var tmpBatchTask *orm.Batch
-		tmpBatchTask, getTaskError = bp.batchOrm.GetAssignedBatch(ctx.Copy(), maxActiveAttempts, maxTotalAttempts)
+		var assignedOffset, unassignedOffset = 0, 0
+		tmpAssignedBatchTasks, getTaskError := bp.batchOrm.GetAssignedBatches(ctx.Copy(), maxActiveAttempts, maxTotalAttempts, 50)
 		if getTaskError != nil {
 			log.Error("failed to get assigned batch proving tasks", "height", getTaskParameter.ProverHeight, "err", getTaskError)
 			return nil, ErrCoordinatorInternalFailure
 		}
-
 		// Why here need get again? In order to support a task can assign to multiple prover, need also assign `ProvingTaskAssigned`
-		// batch to prover. But use `proving_status in (1, 2)` will not use the postgres index. So need split the sql.
-		if tmpBatchTask == nil {
-			tmpBatchTask, getTaskError = bp.batchOrm.GetUnassignedBatch(ctx.Copy(), maxActiveAttempts, maxTotalAttempts)
+		// chunk to prover. But use `proving_status in (1, 2)` will not use the postgres index. So need split the sql.
+		tmpUnassignedBatchTask, getTaskError := bp.batchOrm.GetUnassignedBatches(ctx.Copy(), maxActiveAttempts, maxTotalAttempts, 50)
+		if getTaskError != nil {
+			log.Error("failed to get unassigned batch proving tasks", "height", getTaskParameter.ProverHeight, "err", getTaskError)
+			return nil, ErrCoordinatorInternalFailure
+		}
+		for {
+			tmpBatchTask = nil
+			if assignedOffset < len(tmpAssignedBatchTasks) {
+				tmpBatchTask = tmpAssignedBatchTasks[assignedOffset]
+				assignedOffset++
+			} else if unassignedOffset < len(tmpUnassignedBatchTask) {
+				tmpBatchTask = tmpUnassignedBatchTask[unassignedOffset]
+				unassignedOffset++
+			}
+
+			if tmpBatchTask == nil {
+				log.Debug("get empty batch", "height", getTaskParameter.ProverHeight)
+				return nil, nil
+			}
+
+			// Don't dispatch the same failing job to the same prover
+			proverTask, getTaskError := bp.proverTaskOrm.GetTaskOfProver(ctx.Copy(), message.ProofTypeBatch, tmpBatchTask.Hash, taskCtx.PublicKey, taskCtx.ProverVersion)
 			if getTaskError != nil {
-				log.Error("failed to get unassigned batch proving tasks", "height", getTaskParameter.ProverHeight, "err", getTaskError)
+				log.Error("failed to get prover task of prover", "proof_type", message.ProofTypeBatch.String(), "taskID", tmpBatchTask.Hash, "key", taskCtx.PublicKey, "Prover_version", taskCtx.ProverVersion, "error", getTaskError)
 				return nil, ErrCoordinatorInternalFailure
 			}
-		}
-
-		if tmpBatchTask == nil {
-			log.Debug("get empty batch", "height", getTaskParameter.ProverHeight)
-			return nil, nil
+			if proverTask == nil || types.ProverProveStatus(proverTask.ProvingStatus) != types.ProverProofInvalid {
+				break
+			}
 		}
 
 		rowsAffected, updateAttemptsErr := bp.batchOrm.UpdateBatchAttempts(ctx.Copy(), tmpBatchTask.Index, tmpBatchTask.ActiveAttempts, tmpBatchTask.TotalAttempts)

coordinator/internal/logic/provertask/bundle_prover_task.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"strings"
 	"time"
 
 	"github.com/gin-gonic/gin"
@@ -63,29 +64,59 @@ func (bp *BundleProverTask) Assign(ctx *gin.Context, getTaskParameter *coordinat
 
 	maxActiveAttempts := bp.cfg.ProverManager.ProversPerSession
 	maxTotalAttempts := bp.cfg.ProverManager.SessionAttempts
+	if strings.HasPrefix(taskCtx.ProverName, ExternalProverNamePrefix) {
+		unassignedBundleCount, getCountError := bp.bundleOrm.GetUnassignedBundleCount(ctx.Copy(), maxActiveAttempts, maxTotalAttempts)
+		if getCountError != nil {
+			log.Error("failed to get unassigned batch proving tasks count", "height", getTaskParameter.ProverHeight, "err", err)
+			return nil, ErrCoordinatorInternalFailure
+		}
+		// Assign external prover if unassigned task number exceeds threshold
+		if unassignedBundleCount < bp.cfg.ProverManager.ExternalProverThreshold {
+			return nil, nil
+		}
+	}
+
 	var bundleTask *orm.Bundle
 	for i := 0; i < 5; i++ {
 		var getTaskError error
 		var tmpBundleTask *orm.Bundle
-		tmpBundleTask, getTaskError = bp.bundleOrm.GetAssignedBundle(ctx.Copy(), maxActiveAttempts, maxTotalAttempts)
+		var assignedOffset, unassignedOffset = 0, 0
+		tmpAssignedBundleTasks, getTaskError := bp.bundleOrm.GetAssignedBundles(ctx.Copy(), maxActiveAttempts, maxTotalAttempts, 50)
 		if getTaskError != nil {
-			log.Error("failed to get assigned bundle proving tasks", "height", getTaskParameter.ProverHeight, "err", getTaskError)
+			log.Error("failed to get assigned batch proving tasks", "height", getTaskParameter.ProverHeight, "err", getTaskError)
 			return nil, ErrCoordinatorInternalFailure
 		}
-
 		// Why here need get again? In order to support a task can assign to multiple prover, need also assign `ProvingTaskAssigned`
-		// bundle to prover. But use `proving_status in (1, 2)` will not use the postgres index. So need split the sql.
-		if tmpBundleTask == nil {
-			tmpBundleTask, getTaskError = bp.bundleOrm.GetUnassignedBundle(ctx.Copy(), maxActiveAttempts, maxTotalAttempts)
+		// chunk to prover. But use `proving_status in (1, 2)` will not use the postgres index. So need split the sql.
+		tmpUnassignedBundleTask, getTaskError := bp.bundleOrm.GetUnassignedBundles(ctx.Copy(), maxActiveAttempts, maxTotalAttempts, 50)
+		if getTaskError != nil {
+			log.Error("failed to get unassigned batch proving tasks", "height", getTaskParameter.ProverHeight, "err", getTaskError)
+			return nil, ErrCoordinatorInternalFailure
+		}
+		for {
+			tmpBundleTask = nil
+			if assignedOffset < len(tmpAssignedBundleTasks) {
+				tmpBundleTask = tmpAssignedBundleTasks[assignedOffset]
+				assignedOffset++
+			} else if unassignedOffset < len(tmpUnassignedBundleTask) {
+				tmpBundleTask = tmpUnassignedBundleTask[unassignedOffset]
+				unassignedOffset++
+			}
+
+			if tmpBundleTask == nil {
+				log.Debug("get empty bundle", "height", getTaskParameter.ProverHeight)
+				return nil, nil
+			}
+
+			// Don't dispatch the same failing job to the same prover
+			proverTask, getTaskError := bp.proverTaskOrm.GetTaskOfProver(ctx.Copy(), message.ProofTypeBatch, tmpBundleTask.Hash, taskCtx.PublicKey, taskCtx.ProverVersion)
 			if getTaskError != nil {
-				log.Error("failed to get unassigned bundle proving tasks", "height", getTaskParameter.ProverHeight, "err", getTaskError)
+				log.Error("failed to get prover task of prover", "proof_type", message.ProofTypeBatch.String(), "taskID", tmpBundleTask.Hash, "key", taskCtx.PublicKey, "Prover_version", taskCtx.ProverVersion, "error", getTaskError)
 				return nil, ErrCoordinatorInternalFailure
 			}
-		}
-
-		if tmpBundleTask == nil {
-			log.Debug("get empty bundle", "height", getTaskParameter.ProverHeight)
-			return nil, nil
+			if proverTask == nil || types.ProverProveStatus(proverTask.ProvingStatus) != types.ProverProofInvalid {
+				break
+			}
 		}
 
 		rowsAffected, updateAttemptsErr := bp.bundleOrm.UpdateBundleAttempts(ctx.Copy(), tmpBundleTask.Hash, tmpBundleTask.ActiveAttempts, tmpBundleTask.TotalAttempts)

coordinator/internal/logic/provertask/chunk_prover_task.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
+	"strings"
 	"time"
 
 	"github.com/gin-gonic/gin"
@@ -61,29 +62,59 @@ func (cp *ChunkProverTask) Assign(ctx *gin.Context, getTaskParameter *coordinato
 
 	maxActiveAttempts := cp.cfg.ProverManager.ProversPerSession
 	maxTotalAttempts := cp.cfg.ProverManager.SessionAttempts
+	if strings.HasPrefix(taskCtx.ProverName, ExternalProverNamePrefix) {
+		unassignedChunkCount, getCountError := cp.chunkOrm.GetUnassignedChunkCount(ctx.Copy(), maxActiveAttempts, maxTotalAttempts, getTaskParameter.ProverHeight)
+		if getCountError != nil {
+			log.Error("failed to get unassigned chunk proving tasks count", "height", getTaskParameter.ProverHeight, "err", err)
+			return nil, ErrCoordinatorInternalFailure
+		}
+		// Assign external prover if unassigned task number exceeds threshold
+		if unassignedChunkCount < cp.cfg.ProverManager.ExternalProverThreshold {
+			return nil, nil
+		}
+	}
+
 	var chunkTask *orm.Chunk
 	for i := 0; i < 5; i++ {
 		var getTaskError error
 		var tmpChunkTask *orm.Chunk
-		tmpChunkTask, getTaskError = cp.chunkOrm.GetAssignedChunk(ctx.Copy(), maxActiveAttempts, maxTotalAttempts, getTaskParameter.ProverHeight)
+		var assignedOffset, unassignedOffset = 0, 0
+		tmpAssignedChunkTasks, getTaskError := cp.chunkOrm.GetAssignedChunks(ctx.Copy(), maxActiveAttempts, maxTotalAttempts, getTaskParameter.ProverHeight, 50)
 		if getTaskError != nil {
 			log.Error("failed to get assigned chunk proving tasks", "height", getTaskParameter.ProverHeight, "err", getTaskError)
 			return nil, ErrCoordinatorInternalFailure
 		}
-
 		// Why here need get again? In order to support a task can assign to multiple prover, need also assign `ProvingTaskAssigned`
 		// chunk to prover. But use `proving_status in (1, 2)` will not use the postgres index. So need split the sql.
-		if tmpChunkTask == nil {
-			tmpChunkTask, getTaskError = cp.chunkOrm.GetUnassignedChunk(ctx.Copy(), maxActiveAttempts, maxTotalAttempts, getTaskParameter.ProverHeight)
+		tmpUnassignedChunkTask, getTaskError := cp.chunkOrm.GetUnassignedChunk(ctx.Copy(), maxActiveAttempts, maxTotalAttempts, getTaskParameter.ProverHeight, 50)
+		if getTaskError != nil {
+			log.Error("failed to get unassigned chunk proving tasks", "height", getTaskParameter.ProverHeight, "err", getTaskError)
+			return nil, ErrCoordinatorInternalFailure
+		}
+		for {
+			tmpChunkTask = nil
+			if assignedOffset < len(tmpAssignedChunkTasks) {
+				tmpChunkTask = tmpAssignedChunkTasks[assignedOffset]
+				assignedOffset++
+			} else if unassignedOffset < len(tmpUnassignedChunkTask) {
+				tmpChunkTask = tmpUnassignedChunkTask[unassignedOffset]
+				unassignedOffset++
+			}
+
+			if tmpChunkTask == nil {
+				log.Debug("get empty chunk", "height", getTaskParameter.ProverHeight)
+				return nil, nil
+			}
+
+			// Don't dispatch the same failing job to the same prover
+			proverTask, getTaskError := cp.proverTaskOrm.GetTaskOfProver(ctx.Copy(), message.ProofTypeChunk, tmpChunkTask.Hash, taskCtx.PublicKey, taskCtx.ProverVersion)
 			if getTaskError != nil {
-				log.Error("failed to get unassigned chunk proving tasks", "height", getTaskParameter.ProverHeight, "err", getTaskError)
+				log.Error("failed to get prover task of prover", "proof_type", message.ProofTypeChunk.String(), "taskID", tmpChunkTask.Hash, "key", taskCtx.PublicKey, "Prover_version", taskCtx.ProverVersion, "error", getTaskError)
 				return nil, ErrCoordinatorInternalFailure
 			}
-		}
-
-		if tmpChunkTask == nil {
-			log.Debug("get empty chunk", "height", getTaskParameter.ProverHeight)
-			return nil, nil
+			if proverTask == nil || types.ProverProveStatus(proverTask.ProvingStatus) != types.ProverProofInvalid {
+				break
+			}
 		}
 
 		rowsAffected, updateAttemptsErr := cp.chunkOrm.UpdateChunkAttempts(ctx.Copy(), tmpChunkTask.Index, tmpChunkTask.ActiveAttempts, tmpChunkTask.TotalAttempts)

coordinator/internal/logic/provertask/prover_task.go

@@ -27,6 +27,11 @@ var (
 	getTaskCounterVec      *prometheus.CounterVec = nil
 )
 
+var (
+	// ExternalProverNamePrefix prefix of prover name
+	ExternalProverNamePrefix = "external"
+)
+
 // ProverTask the interface of a collector who send data to prover
 type ProverTask interface {
 	Assign(ctx *gin.Context, getTaskParameter *coordinatorType.GetTaskParameter) (*coordinatorType.GetTaskSchema, error)

coordinator/internal/orm/batch.go

@@ -78,38 +78,48 @@ func (*Batch) TableName() string {
 	return "batch"
 }
 
-// GetUnassignedBatch retrieves unassigned batch based on the specified limit.
+// GetUnassignedBatches retrieves unassigned batches based on the specified limit.
 // The returned batches are sorted in ascending order by their index.
-func (o *Batch) GetUnassignedBatch(ctx context.Context, maxActiveAttempts, maxTotalAttempts uint8) (*Batch, error) {
-	var batch Batch
+func (o *Batch) GetUnassignedBatches(ctx context.Context, maxActiveAttempts, maxTotalAttempts uint8, limit uint64) ([]*Batch, error) {
+	var batch []*Batch
 	db := o.db.WithContext(ctx)
-	sql := fmt.Sprintf("SELECT * FROM batch WHERE proving_status = %d AND total_attempts < %d AND active_attempts < %d AND chunk_proofs_status = %d AND batch.deleted_at IS NULL ORDER BY batch.index LIMIT 1;",
-		int(types.ProvingTaskUnassigned), maxTotalAttempts, maxActiveAttempts, int(types.ChunkProofsStatusReady))
+	sql := fmt.Sprintf("SELECT * FROM batch WHERE proving_status = %d AND total_attempts < %d AND active_attempts < %d AND chunk_proofs_status = %d AND batch.deleted_at IS NULL ORDER BY batch.index LIMIT %d;",
+		int(types.ProvingTaskUnassigned), maxTotalAttempts, maxActiveAttempts, int(types.ChunkProofsStatusReady), limit)
 	err := db.Raw(sql).Scan(&batch).Error
 	if err != nil {
-		return nil, fmt.Errorf("Batch.GetUnassignedBatch error: %w", err)
+		return nil, fmt.Errorf("Batch.GetUnassignedBatches error: %w", err)
 	}
-	if batch.Hash == "" {
-		return nil, nil
+	return batch, nil
+}
+
+// GetUnassignedBatchCount retrieves unassigned batch count based on the specified limit.
+func (o *Batch) GetUnassignedBatchCount(ctx context.Context, maxActiveAttempts, maxTotalAttempts uint8) (int64, error) {
+	var count int64
+	db := o.db.WithContext(ctx)
+	db = db.Model(&Batch{})
+	db = db.Where("proving_status = ?", int(types.ProvingTaskUnassigned))
+	db = db.Where("total_attempts < ?", maxTotalAttempts)
+	db = db.Where("active_attempts < ?", maxActiveAttempts)
+	db = db.Where("chunk_proofs_status = ?", int(types.ChunkProofsStatusReady))
+	db = db.Where("batch.deleted_at IS NULL")
+	if err := db.Count(&count).Error; err != nil {
+		return 0, fmt.Errorf("Batch.GetUnassignedBatchCount error: %w", err)
 	}
-	return &batch, nil
+	return count, nil
 }
 
-// GetAssignedBatch retrieves assigned batch based on the specified limit.
+// GetAssignedBatches retrieves assigned batches based on the specified limit.
 // The returned batches are sorted in ascending order by their index.
-func (o *Batch) GetAssignedBatch(ctx context.Context, maxActiveAttempts, maxTotalAttempts uint8) (*Batch, error) {
-	var batch Batch
+func (o *Batch) GetAssignedBatches(ctx context.Context, maxActiveAttempts, maxTotalAttempts uint8, limit uint64) ([]*Batch, error) {
+	var batch []*Batch
 	db := o.db.WithContext(ctx)
-	sql := fmt.Sprintf("SELECT * FROM batch WHERE proving_status = %d AND total_attempts < %d AND active_attempts < %d AND chunk_proofs_status = %d AND batch.deleted_at IS NULL ORDER BY batch.index LIMIT 1;",
-		int(types.ProvingTaskAssigned), maxTotalAttempts, maxActiveAttempts, int(types.ChunkProofsStatusReady))
+	sql := fmt.Sprintf("SELECT * FROM batch WHERE proving_status = %d AND total_attempts < %d AND active_attempts < %d AND chunk_proofs_status = %d AND batch.deleted_at IS NULL ORDER BY batch.index LIMIT %d;",
+		int(types.ProvingTaskAssigned), maxTotalAttempts, maxActiveAttempts, int(types.ChunkProofsStatusReady), limit)
 	err := db.Raw(sql).Scan(&batch).Error
 	if err != nil {
-		return nil, fmt.Errorf("Batch.GetAssignedBatch error: %w", err)
-	}
-	if batch.Hash == "" {
-		return nil, nil
+		return nil, fmt.Errorf("Batch.GetAssignedBatches error: %w", err)
 	}
-	return &batch, nil
+	return batch, nil
 }
 
 // GetUnassignedAndChunksUnreadyBatches get the batches which is unassigned and chunks is not ready
@@ -132,19 +142,6 @@ func (o *Batch) GetUnassignedAndChunksUnreadyBatches(ctx context.Context, offset
 	return batches, nil
 }
 
-// GetAssignedBatches retrieves all batches whose proving_status is either types.ProvingTaskAssigned.
-func (o *Batch) GetAssignedBatches(ctx context.Context) ([]*Batch, error) {
-	db := o.db.WithContext(ctx)
-	db = db.Model(&Batch{})
-	db = db.Where("proving_status = ?", int(types.ProvingTaskAssigned))
-
-	var assignedBatches []*Batch
-	if err := db.Find(&assignedBatches).Error; err != nil {
-		return nil, fmt.Errorf("Batch.GetAssignedBatches error: %w", err)
-	}
-	return assignedBatches, nil
-}
-
 // GetProvingStatusByHash retrieves the proving status of a batch given its hash.
 func (o *Batch) GetProvingStatusByHash(ctx context.Context, hash string) (types.ProvingStatus, error) {
 	db := o.db.WithContext(ctx)