Fix Query Coord UT and cleanup logic (#13618)

Signed-off-by: xiaofan-luan <xiaofan.luan@zilliz.com>

internal/querycoord/cluster.go

@@ -219,7 +219,7 @@ func (c *queryNodeCluster) reloadFromKV() error {
 			}
 			err = c.nodes[nodeID].setCollectionInfo(collectionInfo)
 			if err != nil {
-				log.Debug("reloadFromKV: failed to add queryNode meta to cluster", zap.Int64("nodeID", nodeID), zap.String("error info", err.Error()))
+				log.Warn("reloadFromKV: failed to add queryNode meta to cluster", zap.Int64("nodeID", nodeID), zap.String("error info", err.Error()))
 				return err
 			}
 			log.Debug("reloadFromKV: reload collection info from etcd", zap.Any("info", collectionInfo))
@@ -647,7 +647,7 @@ func (c *queryNodeCluster) registerNode(ctx context.Context, session *sessionuti
 			go node.start()
 		}
 		c.nodes[id] = node
-		log.Debug("registerNode: create a new query node", zap.Int64("nodeID", id), zap.String("address", session.Address))
+		log.Debug("registerNode: create a new query node", zap.Int64("nodeID", id), zap.String("address", session.Address), zap.Any("state", state))
 		return nil
 	}
 	return fmt.Errorf("registerNode: node %d alredy exists in cluster", id)

internal/querycoord/query_coord.go

@@ -119,8 +119,8 @@ func (qc *QueryCoord) initSession() error {
 
 // Init function initializes the queryCoord's meta, cluster, etcdKV and task scheduler
 func (qc *QueryCoord) Init() error {
-	log.Debug("query coord session info", zap.String("metaPath", Params.MetaRootPath), zap.Strings("etcdEndPoints", Params.EtcdEndpoints), zap.String("address", Params.Address))
-	log.Debug("query coordinator start init")
+	log.Debug("query coordinator start init, session info", zap.String("metaPath", Params.MetaRootPath),
+		zap.Strings("etcdEndPoints", Params.EtcdEndpoints), zap.String("address", Params.Address))
 	//connect etcd
 	connectEtcdFn := func() error {
 		etcdKV, err := etcdkv.NewEtcdKV(Params.EtcdEndpoints, Params.MetaRootPath)
@@ -134,11 +134,11 @@ func (qc *QueryCoord) Init() error {
 	qc.initOnce.Do(func() {
 		err := qc.initSession()
 		if err != nil {
-			log.Error("QueryCoord init session failed", zap.Error(err))
+			log.Error("queryCoord init session failed", zap.Error(err))
 			initError = err
 			return
 		}
-		log.Debug("QueryCoord try to connect etcd")
+		log.Debug("queryCoord try to connect etcd")
 		initError = retry.Do(qc.loopCtx, connectEtcdFn, retry.Attempts(300))
 		if initError != nil {
 			log.Debug("query coordinator try to connect etcd failed", zap.Error(initError))
@@ -150,6 +150,7 @@ func (qc *QueryCoord) Init() error {
 		var idAllocatorKV *etcdkv.EtcdKV
 		idAllocatorKV, initError = tsoutil.NewTSOKVBase(Params.EtcdEndpoints, Params.KvRootPath, "queryCoordTaskID")
 		if initError != nil {
+			log.Debug("query coordinator idAllocatorKV initialize failed", zap.Error(initError))
 			return
 		}
 		idAllocator := allocator.NewGlobalIDAllocator("idTimestamp", idAllocatorKV)

internal/querycoord/query_coord_test.go

@@ -30,10 +30,12 @@ import (
 	"github.com/stretchr/testify/assert"
 
 	etcdkv "github.com/milvus-io/milvus/internal/kv/etcd"
+	"github.com/milvus-io/milvus/internal/log"
 	"github.com/milvus-io/milvus/internal/msgstream"
 	"github.com/milvus-io/milvus/internal/proto/commonpb"
 	"github.com/milvus-io/milvus/internal/proto/querypb"
 	"github.com/milvus-io/milvus/internal/util/sessionutil"
+	"go.uber.org/zap"
 )
 
 func setup() {
@@ -176,10 +178,18 @@ func TestWatchNodeLoop(t *testing.T) {
 		assert.Nil(t, err)
 
 		for {
-			_, err = queryCoord.cluster.offlineNodes()
+			offlineNodes, err := queryCoord.cluster.offlineNodes()
 			if err == nil {
+				log.Warn("find offline Nodes", zap.Any("node map", offlineNodes))
 				break
 			}
+			// if session id not exist, means querycoord already handled it and remove
+			_, err = kv.Load(nodeKey)
+			if err != nil {
+				log.Warn("already handled by querycoord", zap.Error(err))
+				break
+			}
+			time.Sleep(time.Duration(1) * time.Second)
 		}
 
 		queryCoord.Stop()

internal/querycoord/querynode.go

@@ -386,14 +386,9 @@ func (qn *queryNode) removeQueryChannelInfo(collectionID UniqueID) {
 func (qn *queryNode) clearNodeInfo() error {
 	qn.RLock()
 	defer qn.RUnlock()
-	for collectionID := range qn.collectionInfos {
-		err := removeNodeCollectionInfo(collectionID, qn.id, qn.kvClient)
-		if err != nil {
-			return err
-		}
-	}
-
-	return nil
+	// delete query node meta and all the collection info
+	key := fmt.Sprintf("%s/%d", queryNodeMetaPrefix, qn.id)
+	return qn.kvClient.RemoveWithPrefix(key)
 }
 
 func (qn *queryNode) setState(state nodeState) {

internal/util/sessionutil/session_util.go

@@ -130,36 +130,33 @@ func (s *Session) Register() {
 }
 
 func (s *Session) getServerID() (int64, error) {
-	return s.getServerIDWithKey(DefaultIDKey, DefaultRetryTimes)
+	return s.getServerIDWithKey(DefaultIDKey)
 }
 
 func (s *Session) checkIDExist() {
-	log.Debug("Session checkIDExist Begin")
 	s.etcdCli.Txn(s.ctx).If(
 		clientv3.Compare(
 			clientv3.Version(path.Join(s.metaRoot, DefaultServiceRoot, DefaultIDKey)),
 			"=",
 			0)).
 		Then(clientv3.OpPut(path.Join(s.metaRoot, DefaultServiceRoot, DefaultIDKey), "1")).Commit()
-	log.Debug("Session checkIDExist End")
 }
 
-func (s *Session) getServerIDWithKey(key string, retryTimes uint) (int64, error) {
+func (s *Session) getServerIDWithKey(key string) (int64, error) {
 	for {
-		log.Debug("Session try to get serverID")
 		getResp, err := s.etcdCli.Get(s.ctx, path.Join(s.metaRoot, DefaultServiceRoot, key))
 		if err != nil {
-			log.Debug("Session get etcd key error", zap.String("key", key), zap.Error(err))
+			log.Warn("Session get etcd key error", zap.String("key", key), zap.Error(err))
 			return -1, err
 		}
 		if getResp.Count <= 0 {
-			log.Debug("Session there is no value", zap.String("key", key))
+			log.Warn("Session there is no value", zap.String("key", key))
 			continue
 		}
 		value := string(getResp.Kvs[0].Value)
 		valueInt, err := strconv.ParseInt(value, 10, 64)
 		if err != nil {
-			log.Debug("Session ParseInt error", zap.String("value", value), zap.Error(err))
+			log.Warn("Session ParseInt error", zap.String("value", value), zap.Error(err))
 			continue
 		}
 		txnResp, err := s.etcdCli.Txn(s.ctx).If(
@@ -169,15 +166,15 @@ func (s *Session) getServerIDWithKey(key string, retryTimes uint) (int64, error)
 				value)).
 			Then(clientv3.OpPut(path.Join(s.metaRoot, DefaultServiceRoot, key), strconv.FormatInt(valueInt+1, 10))).Commit()
 		if err != nil {
-			log.Debug("Session Txn failed", zap.String("key", key), zap.Error(err))
+			log.Warn("Session Txn failed", zap.String("key", key), zap.Error(err))
 			return -1, err
 		}
 
 		if !txnResp.Succeeded {
-			log.Debug("Session Txn unsuccessful", zap.String("key", key))
+			log.Warn("Session Txn unsuccessful", zap.String("key", key))
 			continue
 		}
-		log.Debug("Session get serverID success")
+		log.Debug("Session get serverID success", zap.String("key", key), zap.Int64("ServerId", valueInt))
 		return valueInt, nil
 	}
 }
@@ -238,7 +235,7 @@ func (s *Session) registerService() (<-chan *clientv3.LeaseKeepAliveResponse, er
 			fmt.Printf("keep alive error %s\n", err)
 			return err
 		}
-		log.Debug("Session Register End", zap.Int64("ServerID", s.ServerID))
+		log.Debug("Session register successfully", zap.Int64("ServerID", s.ServerID))
 		return nil
 	}
 	err := retry.Do(s.ctx, registerFn, retry.Attempts(DefaultRetryTimes), retry.Sleep(500*time.Millisecond))