并行调用API。有时会返回不完整的响应

Question

我深表歉意，无法正确地构架问题：

问题：是否有可能使用 Parallel.Foreach （使用 conturrentbag 添加 foreach 的响应）正在导致不完整的响应发送到调用方法。

在下面的代码中： processEdrecs 仅获得 1 tuple＆lt; list＆lt; sample1＆gt;，sampleclass2，ponsecteClass＆gt; list list 但是它应该得到超过1 。这很少发生，但是我无法弄清楚是什么原因引起的。

我已经研究了所有日志/DB调用，方法 SampleReq 中没有故障。

public ResponseClass2 ManageOrders(SampleRequest request)
{
    //.
    //.
    //.
    var processedRecs = FetchOrderInfo(request);

    // here "processedRecs" are getting only 1
    // Tuple<List<Sample1>, SampleClass2, ResponseClass> in the List
    foreach (var tp in processedRecs)
    {
        //.
        //.
        //.
        // but "SampleReq" method had processed 3, so the List<Touple....>
        // should have count 3 instead of 1.
    }
}

private List<Tuple<List<Sample1>, SampleClass2, ResponseClass>> FetchOrderInfo(
    SampleRequest request)
{
    //.
    //.
    //Processing the request... no issues here
    //.

    ConcurrentBag<Tuple<List<Sample1>, SampleClass2, ResponseClass>> tp =
        new ConcurrentBag<Tuple<List<Sample1>, SampleClass2, ResponseClass>>();

    Parallel.ForEach(arranged,
    samObj =>
    {
        var sampleResponse = TEngine.SampleReq(request.Email, samObj.Item2,
            request.pIndex)
                .GetAwaiter()
                .GetResult();
        tp.Add(Tuple.Create(samObj.Item1, samObj.Item2, sampleResponse));
    });

    return new List<Tuple<List<Sample1>, SampleClass2, ResponseClass>>(tp);
}

// Method "SampleReq" calls another API to get the results... we are calling this
// multiple times for different set of data and then merging this info.
public static async Task<ResponseClass> SampleReq(string email,
    SampleClass2 selectedObj, int pIndex)
{
    // These responses are getting logged and we didn't get any issues here.
}