flink版本：1.11 1.首先第一个问题是在1.11的官方文档connectors的jdbc页面上有这样一句话 Notice that scan.partition.lower-bound and scan.partition.upper-bound are just used to decide the partition stride, not for filtering the rows in table. 这与我观看的源码的结果是不一致的，scan.partition.lower-bound and scan.partition.upper-bound 这两个参数会导致数据被过滤掉，今天我看了一下1.13的文档，这句话更改成了Notice that scan.partition.lower-bound and scan.partition.upper-bound are used to decide the partition stride and filter the rows in table. 这个是不是说明之前1.11文档的这句话是错的？
2。我在看inputFormat接口时，注释有这么一句话 IMPORTANT NOTE: Input formats must be written such that an instance can be opened again after it was closed. That * is due to the fact that the input format is used for potentially multiple splits. After a split is done, the * format's close function is invoked and, if another split is available, the open function is invoked afterwards for * the next split. 这里有一个问题是，我设置 scan.partition.num: The number of partitions. 这个参数 10。然后我的并行度设置为2，也就是每个slot里面会有一个Inputformat用于读取数据，当一个partition读完之后，会调用close方法，然后又会再次调用open方法，然后读取下一个分区。不知道这样理解是否正确？ 然后假设我的分区是10，并行度是3，这个分区是怎么分配到slot的inputformat的呢？
