criptors can be compressed. For the example job we mentioned above, if the parallelisms of vertices are both 10k, then each downstream vertex has 10k ShuffleDescriptors. After compression, the size of the serialized value would be reduced by 72%.</p>
<h3 id="distribute-shuffledescriptors-via-the-blob-server">
  Distribute ShuffleDescriptors via the blob server
  <a class="anchor" href="#distribute-shuffledescriptors-via-the-blob-server">#</a>
</h3>
<p>A <a href="https://en.wikipedia.org/wiki/Binary_large_ob