.12, it takes a long time to deploy tasks for large-scale jobs if they contain all-to-all edges. Furthermore, a heartbeat timeout may happen during or after task deployment, which makes the cluster unstable.</p>
<p>Currently, task deployment includes the following steps:</p>
<ol>
<li>A JobManager creates <a href="//nightlies.apache.org/flink/flink-docs-release-1.14/api/java/org/apache/flink/runtime/deployment/TaskDeploymentDescriptor.html">TaskDeploymentDescriptors</a> for each task, which happens in the Jo