How to set unorderedWait/orderedWait properties in Table API when using Async I/O

[郑泽辉]

Hi all,
I'm using Blink Planner(flink v1.9) and I create a AsyncJdbcTableSource
class implements LookupableTableSource, but when I override the
getAsyncLookupFunction(), I found the results of async method(by Vertx) is
in order.

But I don't need the stream order is preserved and just want the result
records emitted out of order to improve processing speed. In DataStream API
I can easily set the result order guarantee(
https://ci.apache.org/projects/flink/flink-docs-stable/dev/stream/operators/asyncio.html#order-of-results),
and my question is,

how to set this in Table API or SQL API with Blink Planner?

Thanks. Regards