 <th><span data-toggle="tooltip" data-placement="top" title="Number of tasks that have failed on this executor. Darker shading highlights executors with a high proportion of failed tasks.">Failed Tasks</span></th>
        <th>Complete Tasks</th>
        <th>Total Tasks</th>
        <th><span data-toggle="tooltip" data-placement="top"
                  title="Shaded red when garbage collection (GC) time is over 10% of task time">
          Task Time (GC Time)</span></th>
        <th><span data-toggle="toolti