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  1. JDK
  2. JDK-8209462

(timer) Repeated task stops working when the time is moved backward

    Details

    • Subcomponent:
    • CPU:
      x86_64
    • OS:
      os_x

      Description

      ADDITIONAL SYSTEM INFORMATION :
      / macOS High Sierra v.10.13.5 / Java v.1.8.0_162-b12

      A DESCRIPTION OF THE PROBLEM :
      - If I modify the time of my computer and I set a minor time compared to the current time, the task stop working.
      - If I modify the time of my computer and I set a major time compared to the current time, the task continue working as well.

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      1. Copy and paste the provided code and execute it
      2. Now change the time of your computer with a minor time (for example from 18:19:26 to 15:19:26)

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      The software should continue printing numbers. This is a real problem when the daylight savings time arrives (summer/winter).
      ACTUAL -
      The program stops printing numbers

      ---------- BEGIN SOURCE ----------
      Timer timer = new Timer();
      TimerTask timertask = new TimerTask() {
          @Override
          public void run() {
              System.out.println(ThreadLocalRandom.current().nextInt(0, 1000));
          }
      };
      timer.schedule(timertask, 0, 1000);
      ---------- END SOURCE ----------

      FREQUENCY : always


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              • Assignee:
                Unassigned
                Reporter:
                webbuggrp Webbug Group
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                • Created:
                  Updated:
                  Resolved: