Also, it seems that sinks have to be synchronous, I think? (Unless there's some
async equivalent of SinkFunction?) Assuming they're synchronous, if I do the
retry strategy manually in the implementation of SinkFunction.invoke that
means I'll be blocking that thread while waiting to do a retry
I want to sink some data to a database, but the data needs to go into multiple
tables, in a single transaction. Am I right in saying that I cannot use the
JDBC Connector for this as it only handles single SQL statements?
Assuming that's right, I believe that I need to write a custom sink, so I n