ed multiple times. When using pipelined data exchanges, result partitions are produced and consumed concurrently. The produced results are not persisted and can be consumed only once.</p>
<p>Since the pipelined data stream is produced and consumed simultaneously, Flink needs to make sure that the vertices connected via pipelined data exchanges execute at the same time. These vertices form a <a href="//nightlies.apache.org/flink/flink-docs-release-1.14/api/java/org/apache/flink/runtime/topology/PipelinedRegi