[YARN-3393] Getting application(s) goes wrong when app finishes before starting the attempt

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 2.7.0, 2.6.1, 3.0.0-alpha1
• Component/s: timelineserver
• Labels: 2.6.1-candidate
• Target Version/s: 2.7.0
• Assignee: Zhijie Shen
• Reporter: Zhijie Shen
• Created: 23/Mar/15 21:44
• Updated: 30/Aug/16 01:25
• Resolved: 24/Mar/15 03:35

Description

When generating app report in ApplicationHistoryManagerOnTimelineStore, it checks if appAttempt == null.

        ApplicationAttemptReport appAttempt = getApplicationAttempt(app.appReport.getCurrentApplicationAttemptId());
        if (appAttempt != null) {
          app.appReport.setHost(appAttempt.getHost());
          app.appReport.setRpcPort(appAttempt.getRpcPort());
          app.appReport.setTrackingUrl(appAttempt.getTrackingUrl());
          app.appReport.setOriginalTrackingUrl(appAttempt.getOriginalTrackingUrl());
        }

However, getApplicationAttempt doesn't return null but throws ApplicationAttemptNotFoundException:

    if (entity == null) {
      throw new ApplicationAttemptNotFoundException(
          "The entity for application attempt " + appAttemptId +
          " doesn't exist in the timeline store");
    } else {
      return convertToApplicationAttemptReport(entity);
    }

They code isn't coupled well.