您要查找的是不是：
- Scatter／GatherScatter/Gather
- Gather Streams运算符仅用在并行查询计划中。The Gather Streams operator is only used in parallel query plans.
- Gather Streams运算符处理几个输入流并通过组合这几个输入流生成单个记录输出流。The Gather Streams operator consumes several input streams and produces a single output stream of records by combining the input streams.
- 聚合通信包括很多全局操作,比如广播通信(Broadcast),同步(Barrier)、全局归约(Reduce),散布(Scatter)、聚集(gather)等等。Collective communication includes many kinds of global communication, such as Broadcast, Barrier, Reduce, Scatter, Gather etc.
