>

<div style="position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden;">
  <iframe src="https://www.youtube.com/embed/B1NVDTazsZY" style="position: absolute; top: 0; left: 0; width: 100%; height: 100%; border:0;" allowfullscreen title="YouTube Video"></iframe>
</div>

<p>Under the hood, Apache Flink performs a regular rescaling operation as soon as the required resources for the new
parallelism have been acquired. The rescaling operation is not based on a Savepoint, but on an ordinary, peri