[MAPREDUCE-6586] TaskAttempt Page should reset the progress to 0 when its state is failed

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.7.1
• Component/s: webapps
• Assignee: Yiqun Lin
• Reporter: Yiqun Lin
• Created: 22/Dec/15 08:59
• Updated: 22/Dec/15 09:06

Description

The progress of taskAttempt is not correctly showing when the taskAttempt is failed. The value is 100.00, but actually the taskAttempt is failed. And I found the reason is following:

CompletedTaskAttempt.java

@Override
  public Counters getCounters() {
    return attemptInfo.getCounters();
  }

  @Override
  public TaskAttemptId getID() {
    return attemptId;
  }

  @Override
  public float getProgress() {
    return 1.0f;
  }

When the taskAttempt is completed, the progress will always return 1.0 whenever the result is failed or succeed. This will let users confused. May be it should be reset to 0 better. I attach a screen shot of this case.