Fix wrong log (#26022)

Signed-off-by: Nlixinguo <xinguo.li@zilliz.com>
Co-authored-by: Nlixinguo <xinguo.li@zilliz.com>

internal/querynodev2/handlers.go

@@ -175,8 +175,8 @@ func (node *QueryNode) queryChannel(ctx context.Context, req *querypb.QueryReque
 	// get delegator
 	sd, ok := node.delegators.Get(channel)
 	if !ok {
-		err := merr.WrapErrServiceUnavailable("failed to get query shard delegator")
-		log.Warn("Query failed, failed to get query shard delegator", zap.Error(err))
+		err := merr.WrapErrServiceUnavailable("failed to get shard delegator for query")
+		log.Warn("Query failed, failed to get shard delegator for query", zap.Error(err))
 		failRet.Status = merr.Status(err)
 		return failRet, nil
 	}
@@ -326,8 +326,8 @@ func (node *QueryNode) searchChannel(ctx context.Context, req *querypb.SearchReq
 	// get delegator
 	sd, ok := node.delegators.Get(channel)
 	if !ok {
-		err := merr.WrapErrServiceUnavailable("failed to get query shard delegator")
-		log.Warn("Query failed, failed to get query shard delegator", zap.Error(err))
+		err := merr.WrapErrServiceUnavailable("failed to get shard delegator for search")
+		log.Warn("Query failed, failed to get shard delegator for search", zap.Error(err))
 		failRet.Status.Reason = err.Error()
 		return failRet, err
 	}

internal/querynodev2/services_test.go

@@ -1170,7 +1170,7 @@ func (suite *ServiceSuite) TestSearch_Failed() {
 	resp, err = suite.node.Search(ctx, req)
 	suite.NoError(err)
 	suite.Equal(commonpb.ErrorCode_UnexpectedError, resp.GetStatus().GetErrorCode())
-	suite.Contains(resp.GetStatus().GetReason(), "failed to get query shard delegator")
+	suite.Contains(resp.GetStatus().GetReason(), merr.ErrServiceUnavailable.Error())
 
 	suite.TestWatchDmChannelsInt64()
 	suite.TestLoadSegments_Int64()
@@ -1269,7 +1269,7 @@ func (suite *ServiceSuite) TestQuery_Failed() {
 	resp, err := suite.node.Query(ctx, req)
 	suite.NoError(err)
 	suite.Equal(commonpb.ErrorCode_UnexpectedError, resp.GetStatus().GetErrorCode())
-	suite.Contains(resp.GetStatus().GetReason(), "failed to get query shard delegator")
+	suite.Contains(resp.GetStatus().GetReason(), merr.ErrServiceUnavailable.Error())
 
 	suite.TestWatchDmChannelsInt64()
 	suite.TestLoadSegments_Int64()