C# （任务） 在Microsoft.Azure.Graphs.GraphTraversal.GraphTraversalIterator.d_u14.MoveNext（）上 ---来自引发异常的上一个位置的堆栈结束跟踪--- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务） 在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中 在Microsoft.Azure.Graphs.GraphTraversal.GraphTraversalIterator.d_u5.MoveNext（）上 ---来自引发异常的上一个位置的堆栈结束跟踪--- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务） 在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中 在Microsoft.Azure.Graphs.GraphTraversal.d_u17.MoveNext（）上 ---来自引发异常的上一个位置的堆栈结束跟踪--- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务） 在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中 在Microsoft.Azure.Graphs.GremlinDocumentQuery`1.d_u15`1.MoveNext（）上 ---来自引发异常的上一个位置的堆栈结束跟踪--- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务） 在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中 在System.Runtime.CompilerServices.TaskAwaiter`1.GetResult（）中 在C:\dev\sixedegreesofnetflix\Application\Data\GremlinClient.cs中的Octogami.sixedegreesofnetflix.Application.Data.GremlinClient.d_u3`1.MoveNext（）处：第28行 ---来自引发异常的上一个位置的堆栈结束跟踪--- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务） 在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中 在System.Runtime.CompilerServices.TaskAwaiter`1.GetResult（）中 在C:\dev\SixDegreesOfNetflix\Application\Data\ActorPathRepository.d_u2.MoveNext（）中的Octogami.SixDegreesOfNetflix.Application.Data.ActorPathRepository.d_u2.MoveNext（）处：第20行 ---来自引发异常的上一个位置的堆栈结束跟踪--- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务） 在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中 在System.Runtime.CompilerServices.TaskAwaiter`1.GetResult（）中 在C:\dev\sixedegreesofnetflix\Application\Feature\GetPathBetweenActorsCommandHandler.d_u3.MoveNext（）中的Octogami.sixedegreesofnetflix.Application.Feature.GetPathBetweenActors.cs:第42行 ---来自引发异常的上一个位置的堆栈结束跟踪--- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务） 在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中 在System.Runtime.CompilerServices.TaskAwaiter`1.GetResult（）中 在Octogami.SixDegreesOfNetflix.Website.Controllers.ActorController.d_u5.MoveNext（）上 ---来自引发异常的上一个位置的堆栈结束跟踪--- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务） 在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中 在Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.d_u27.MoveNext（）中 ---来自引发异常的上一个位置的堆栈结束跟踪--- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务） 在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中 在Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.d_u25.MoveNext（）中 ---来自引发异常的上一个位置的堆栈结束跟踪--- 位于Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow（ActionExecutedContext上下文） 位于Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next（状态和下一步、范围和范围、对象和状态、布尔值和isCompleted） 在Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.d_u22.MoveNext（）中 ---来自引发异常的上一个位置的堆栈结束跟踪--- 位于Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow（ResourceExecutedContext上下文） 位于Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next（状态和下一步、范围和范围、对象和状态、布尔值和isCompleted） 在Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.d_u20.MoveNext（）中 ---来自引发异常的上一个位置的堆栈结束跟踪--- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务） 在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中 在Microsoft.AspNetCore.Builder.RouterMiddleware.d_u4.MoveNext（）上 ---来自引发异常的上一个位置的堆栈结束跟踪--- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务） 在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中 在Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.d__7.MoveNext（）上 --->（内部异常#0）System.OutOfMemoryException:引发了类型为“System.OutOfMemoryException”的异常。 在System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.GetTaskForResult（TResult结果）中 在System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetResult（TResult结果）中 在Microsoft.Azure.Graphs.Runtime.Operators.ProjectOperator.d_u4.MoveNext（）中 在System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.启动[TStateMachine]（TStateMachine&stateMachine） 在Microsoft.Azure.Graphs.Runtime.Operators.ProjectOperator.NextAsync（）上 在0.2.4-preview Nuget包中的Microsoft.Azure.Graphs.Runtime.ScalarSubqueryFunction.d__3.MoveNext（）

中，limit（）子句的行为不正确。在0.3.0-preview Nuget包中，为limit（）遍历步骤添加了一个优化。什么时候

g.V('keanureeves')
.repeat(both().simplePath())
.until(hasId('marlonbrando'))
.path()
.limit(1)

540 movie vertexes
112 actor vertexes
681 actedIn edges

public async Task<IList<T>> ExecuteQueryAsync<T>(string gremlinQuery)
{
        var query = _documentClient.CreateGremlinQuery(_graph, gremlinQuery);

        var results = new List<T>();
        while (query.HasMoreResults)
        {
            var feed = await query.ExecuteNextAsync<T>();
            results.AddRange(feed.Select(x => x));
        }
        return results;
}

System.AggregateException: One or more errors occurred. ---> System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
    at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.GetTaskForResult(TResult result)
    at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetResult(TResult result)
    at Microsoft.Azure.Graphs.Runtime.Operators.ProjectOperator.<NextAsync>d__4.MoveNext()
    at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.Start[TStateMachine](TStateMachine& stateMachine)
    at Microsoft.Azure.Graphs.Runtime.Operators.ProjectOperator.NextAsync()
    at Microsoft.Azure.Graphs.Runtime.ScalarSubqueryFunction.<EvaluateAsync>d__3.MoveNext()
    --- End of inner exception stack trace ---
    at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
    at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
    at System.Threading.Tasks.Task`1.get_Result()
    at Microsoft.Azure.Graphs.Runtime.Operators.PathOperator.GetStepProjectionResult(FieldObject step, Int32& activeByFuncIndex)
    at Microsoft.Azure.Graphs.Runtime.Operators.PathOperator.<NextAsync>d__4.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at Microsoft.Azure.Graphs.Runtime.Operators.SimplePathOperator.<NextAsync>d__3.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
    at Microsoft.Azure.Graphs.Runtime.Operators.PathOperator.<NextAsync>d__4.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at Microsoft.Azure.Graphs.Runtime.Operators.ProjectOperator.<NextAsync>d__4.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
    at Microsoft.Azure.Graphs.Runtime.Operators.RepeatOperator.<NextAsync>d__18.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
    at Microsoft.Azure.Graphs.Runtime.Operators.PathOperator.<NextAsync>d__4.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at Microsoft.Azure.Graphs.Runtime.Operators.RangeOperator.<NextAsync>d__5.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at Microsoft.Azure.Graphs.Runtime.Operators.ProjectOperator.<NextAsync>d__4.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at Microsoft.Azure.Graphs.GraphTraversal.GraphTraversalIterator.<CurrentOperatorNextAsync>d__14.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at Microsoft.Azure.Graphs.GraphTraversal.GraphTraversalIterator.<MoveNextAsync>d__5.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at Microsoft.Azure.Graphs.GraphTraversal.<MoveNextAsync>d__17.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at Microsoft.Azure.Graphs.GremlinDocumentQuery`1.<ExecuteNextAsync>d__15`1.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
    at Octogami.SixDegreesOfNetflix.Application.Data.GremlinClient.<ExecuteQueryAsync>d__3`1.MoveNext() in C:\dev\SixDegreesOfNetflix\Application\Data\GremlinClient.cs:line 28
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
    at Octogami.SixDegreesOfNetflix.Application.Data.ActorPathRepository.<GetPathBetweenActors>d__2.MoveNext() in C:\dev\SixDegreesOfNetflix\Application\Data\ActorPathRepository.cs:line 20
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
    at Octogami.SixDegreesOfNetflix.Application.Feature.GetPathBetweenActorsCommandHandler.<Handle>d__3.MoveNext() in C:\dev\SixDegreesOfNetflix\Application\Feature\GetPathBetweenActors.cs:line 42
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
    at Octogami.SixDegreesOfNetflix.Website.Controllers.ActorController.<DegreesOfSeparation>d__5.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeActionMethodAsync>d__27.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeNextActionFilterAsync>d__25.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ActionExecutedContext context)
    at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
    at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeNextResourceFilter>d__22.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ResourceExecutedContext context)
    at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
    at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.<InvokeAsync>d__20.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at Microsoft.AspNetCore.Builder.RouterMiddleware.<Invoke>d__4.MoveNext()
 --- End of stack trace from previous location where exception was thrown ---
    at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
    at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
    at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.<Invoke>d__7.MoveNext()
 ---> (Inner Exception #0) System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
    at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.GetTaskForResult(TResult result)
    at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetResult(TResult result)
    at Microsoft.Azure.Graphs.Runtime.Operators.ProjectOperator.<NextAsync>d__4.MoveNext()
    at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.Start[TStateMachine](TStateMachine& stateMachine)
    at Microsoft.Azure.Graphs.Runtime.Operators.ProjectOperator.NextAsync()
    at Microsoft.Azure.Graphs.Runtime.ScalarSubqueryFunction.<EvaluateAsync>d__3.MoveNext()<---