t group-window and row-window aggregates on streaming and batch tables.</p>
</li>
<li>
<p><strong>Side inputs</strong>, as described in <a href="https://docs.google.com/document/d/1hIgxi2Zchww_5fWUHLoYiXwSBXjv-M5eOv-MKQYN3m4/edit" target="_blank">this design document</a>, to
enable the joining of a main, high-throughput stream with one more more inputs with static or slowly-changing data.</p>
</li>
</ul>
<p>If you&rsquo;re interested in getting involved with Flink, we encourage you to take a look at the FLI