title: How to restart a failed task on Airflow
body: <p>I am using a <strong>LocalExecutor</strong> and my dag has <strong>3 tasks</strong> where task(C) is dependant on task(A). Task(B) and task(A) can run in parallel something like below</p>
  
  <p>A-->C</p>
  
  <p>B</p>
  
  <p><strong>So task(A) has failed</strong> and but <strong>task(B) ran fine</strong>. Task(C) is yet to run as task(A) has failed.</p>
  
  <p>My question is <strong>how do i re run Task(A) alone so Task(C) runs</strong> once Task(A) completes and Airflow UI marks them as success.</p>