当将一个巨大的文件加载到hadoop集群时，如果客户端在将数据传输到datanode时失败了会发生什么？(when loading a huge file into hadoop cluster , what happends if the client failed while transfering data to datanodes?)

 你究竟想在这里完成什么？ 这听起来像是在存储过程中构建一个XML字段，并且它与DataTable完全一样，只需要一个XML字段。 这是预期的行为。 所以我想上面评论中提到的最大的问题是，如果你想让数据成为代码中的表，为什么数据首先形成为XML？ 
 
 您可以做的一件事是使用LINQ to XML （或一些类似的XML DOM解析方法）来查询返回的结果，以便从返回的字段中获取所需的数据。 它应该感觉相当简单，因为你期望使用表数据，而LINQ对它有“SQL感觉”。 
 
 但是，在这个问题中你可能忽略的一个重点是表和XML之间的结构差异。 表是关系型的，XML是分层的。 它们旨在以完全不同的方式表示数据。 话虽这么说，返回的XML完全有可能无法直接转换为单个DataTable对象。 它可能不代表数据表。 

What exactly are you trying to accomplish here? It sounds like you're building an XML field in the stored procedure and it's being placed in your DataTable exactly as that, a single XML field. This is expected behavior. So I guess the biggest question, as asked in comments above, is why is the data being formed into XML in the first place if you want it to be a table in the code?
 
One thing you could do is use LINQ to XML (or some similar approach for XML DOM parsing) to query into the returned results to get the data you need out of the returned fields. It should feel fairly straightforward since you're expecting to be working with table data and LINQ has that "SQL feel" to it.
 
One important point you may be missing in this question, however, is the structural difference between tables and XML. Tables are relational, XML is hierarchical. They're designed to represent data in entirely different ways. That being said, it's entirely possible that the XML being returned can't be directly translated into a single DataTable object. It just might not represent a table of data.