"；操作的意外响应代码:0”；执行Azure表存储批量删除时

我使用的是.NET版本的Windows Azure存储库4.3.0。在我的ATS存储库类中，我有两种批量删除方法，如下所示：

public async Task DeleteAsync(IEnumerable<T> entities)
{
    await ExecuteAsBatch(entities, (batch, entity) => batch.Delete(entity));
}
private async Task ExecuteAsBatch(IEnumerable<T> entities, Action<TableBatchOperation, T> batchAction)
{
    var byPartition = entities.GroupBy(x => x.PartitionKey).ToList();
    await byPartition.ForEachParallel(async group =>
    {
        // A maximum of 100 actions are allowed per batch job
        var segments = group.ToList().ToSegmentedList(100);
        await segments.ForEachParallel(async segment =>
        {
            var batch = new TableBatchOperation();
            foreach (var entity in segment)
            {
                batchAction(batch, entity);
            }
            await Table.ExecuteBatchAsync(batch);
        }, 10);
    }, 10);
}

在我的代码中的其他地方，DeleteAsync()方法工作正常。然而，在一个特定的地方，我在执行批处理时收到了以下错误消息：

Unexpected Response Code for Operation: 0

这是呼叫站点：

private async Task MergeAtsOrganizationUserEvents(int organizationId, IEnumerable<CustomerUserEvent> fromEvents, CustomerUser to)
{
    var toDelete = (await fromEvents.SelectParallel(async fromEvent =>
    {
        var pkey = AtsOrganizationUserEventByMinute.GetPartitionKey(organizationId, fromEvent.OccurredOn);
        var rkey = AtsOrganizationUserEventByMinute.GetRowKey(fromEvent.OccurredOn, fromEvent.CustomerUserEventId);
        return await Ats.OrganizationUserEventByMinute.FindByPartitionRowAsync(pkey, rkey);
    })).Where(x => x != null).ToList();
    var toInsert = toDelete
        .Select(x => AtsOrganizationUserEventByMinute.FromBase(x.OrganizationId, x.OccurredOn, x.CookieId,
            to.CustomerUserId, x))
        .ToList();
    try
    {
        await Ats.OrganizationUserEventByMinute.UpsertAsync(toInsert);
        await Ats.OrganizationUserEventByMinute.DeleteAsync(toDelete);
    }
    catch (Exception ex)
    {
        _logger.Error("Unable to merge {0} AtsOrganizationEvents for org {1}, to customer user {2}: {3}",
            toInsert.Count, organizationId, to.CustomerUserId, ex.CompleteMessage());
        throw;
    }
}

上述UpsertAsync()方法成功，但DeleteAsync()失败。请注意，它无法删除与FindByPartitionRowAsync()从表中检索到的实体完全相同的实体，所以我无法想象它与格式错误的实体或诸如此类的东西有什么关系。

下面是一个"toDelete"对象（JSON格式）的示例：

{  
   "CookieId":null,
   "CustomerUserId":185766,
   "CustomerUserEventId":3568687,
   "OrganizationId":4190,
   "EventName":"event1",
   "SessionId":null,
   "OccurredOn":"2014-10-20T18:17:09.9971379Z",
   "UrlId":null,
   "Url":null,
   "ReferrerUrlId":null,
   "ReferrerUrl":null,
   "IsSynthetic":false,
   "IpAddress":null,
   "PartitionKey":"4190.2014.10.20",
   "RowKey":"18.17.3568687",
   "Timestamp":"2014-10-20T18:17:11.237+00:00",
   "ETag":"W/''"   datetime'2014-10-20T18%3A17%3A11.237Z'''""
}

Azure存储错误消息是出了名的毫无帮助，谷歌搜索也没有返回任何关于批删除失败的消息。

无论是在使用本地开发存储还是在生产中，这都会失败。

有什么想法吗？