title: kubectl filter doesn't work with jobs?
body: <p>I'm trying to delete jobs using a filter like the following</p>
  
  <pre><code>kubectl delete jobs -l ml=""
  </code></pre>
  
  <p>This returns no resources found. However if I do kubectl describe I see</p>
  
  <pre><code>Labels:     ml=,job_type=worker,runtime_id=tf-runtime,task_index=0
  </code></pre>
  
  <p>The same filter and command works just fine with the pods created by the job controller.</p>
  
  <p>The command also works just fine my job is tagged with a single label, for example</p>
  
  <pre><code>Labels:     ml=
  </code></pre>
  
  <p>So my filter appears to be incorrect when there are other labels on the resource. However, the same set of labels on other resources (services, pods) works just fine with that filter.</p>