title: Jstack fails after two weeks of normal work
body: <p>I have dockerized tomcat 7.0.73 based on <code>java:7-jdk</code> docker image. </p>
  
  <p>I have a job that every 5 minutes does thread dump with command <code>jstack 1</code>. It works for about two weeks normally and after that crashes with message:</p>
  
  <p><code>Unable to open socket file: target process not responding or HotSpot VM not loaded. The -F option can be used when the target process is not responding</code>
  Exit code is 1.</p>
  
  <p>What can be the cause of this behavior?</p>
  
  <p>JVM keeps working okay. Space looks correct too.</p>
  
  <p><code>java -version
  java version "1.7.0_111"
  OpenJDK Runtime Environment (IcedTea 2.6.7) (7u111-2.6.7-2~deb8u1)
  OpenJDK 64-Bit Server VM (build 24.111-b01, mixed mode)</code></p>
  
  <p><code>Filesystem                     Size  Used Avail Use% Mounted on
  /dev/mapper/docker-202:1-xxx   10G 1013M  9.1G  10% /
  tmpfs                          3.9G     0  3.9G   0% /dev
  tmpfs                          3.9G     0  3.9G   0% /sys/fs/cgroup
  /dev/xvda1                     99G   68G   31G  69% /tmp
  shm                            64M     0   64M   0% /dev/shm</code></p>