title: hidden.edu.emory.mathcs.backport*
body: <p>In application thread dump I can see threadpool with five threads like following:</p>
  
  <pre><code>"pool-1-thread-5" prio=10 tid=0x000000000101a000 nid=0xe1f in Object.wait() [0x00007f3c66086000]
    java.lang.Thread.State: WAITING (on object monitor)
      at java.lang.Object.wait(Native Method)
      - waiting on &lt;0x00000007b8e57af8&gt; (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
      at java.lang.Object.wait(Object.java:503)
      at hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:316)
      - locked &lt;0x00000007b8e57af8&gt; (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
      at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:994)
      at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1054)
      at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575)
      at java.lang.Thread.run(Thread.java:722)
  </code></pre>
  
  <p>But I don't use nothing like this directly and don't see anything like this in dependencies.</p>
  
  <p>What is this (hidden.edu.emory.mathcs.backport) and why it used (application running on jdk 7)? Can I detect what part of application starting it?</p>