Program: 13292
Project: 13292
Buggy source:
@Override public boolean removeTrigger(SchedulingContext context,String triggerName,String groupName) throws JobPersistenceException {
synchronized (lock) {
    if (!setAccessor()) {
      throw new JobPersistenceException("String_Node_Str");
    }
    String triggerId=getTriggersRepoId(groupName,triggerName);
    try {
      TriggerGroupWrapper tgw=getOrCreateTriggerGroupWrapper(groupName);
      String rev=tgw.getRevision();
      List<String> triggerNames=tgw.getTriggerNames();
      if (triggerNames.contains(triggerName)) {
        tgw.removeTrigger(triggerName);
        UpdateRequest r=Requests.newUpdateRequest(getTriggerGroupsRepoId(groupName),tgw.getValue());
        r.setRevision(tgw.getRevision());
        accessor.getConnection().update(accessor,r);
      }
      TriggerWrapper tw=getTriggerWrapper(groupName,triggerName);
      if (tw != null) {
        removeWaitingTrigger(tw.getTrigger());
        removeAcquiredTrigger(tw.getTrigger(),instanceId);
        rev=tw.getRevision();
        logger.debug("String_Node_Str",new Object[]{triggerName,groupName});
        DeleteRequest r=Requests.newDeleteRequest(triggerId);
        r.setRevision(rev);
        accessor.getConnection().delete(accessor,r);
        String jobName=tw.getTrigger().getJobName();
        JobWrapper jw=getJobWrapper(groupName,jobName);
        if (jw != null) {
          if (!jw.getJobDetail().isDurable()) {
            String jobId=getJobsRepoId(groupName,jobName);
            JobGroupWrapper jgw=getOrCreateJobGroupWrapper(groupName);
            List<String> jobNames=jgw.getJobNames();
            if (jobNames.contains(jobName)) {
              jgw.removeJob(jobName);
              UpdateRequest ru=Requests.newUpdateRequest(getJobGroupsRepoId(groupName),jgw.getValue());
              r.setRevision(jgw.getRevision());
              accessor.getConnection().update(accessor,ru);
            }
            logger.debug("String_Node_Str",new Object[]{jobName,groupName});
            r=Requests.newDeleteRequest(jobId);
            r.setRevision(jw.getRevision());
            accessor.getConnection().delete(accessor,r);
          }
        }
        return true;
      }
      return false;
    }
 catch (    Exception e) {
      logger.warn("String_Node_Str",triggerName,e);
      throw new JobPersistenceException("String_Node_Str",e);
    }
  }
}

Fixed version (ground truth):
@Override public boolean removeTrigger(SchedulingContext context,String triggerName,String groupName) throws JobPersistenceException {
synchronized (lock) {
    if (!setAccessor()) {
      throw new JobPersistenceException("String_Node_Str");
    }
    String triggerId=getTriggersRepoId(groupName,triggerName);
    try {
      TriggerGroupWrapper tgw=getOrCreateTriggerGroupWrapper(groupName);
      String rev=tgw.getRevision();
      List<String> triggerNames=tgw.getTriggerNames();
      if (triggerNames.contains(triggerName)) {
        tgw.removeTrigger(triggerName);
        UpdateRequest r=Requests.newUpdateRequest(getTriggerGroupsRepoId(groupName),tgw.getValue());
        r.setRevision(tgw.getRevision());
        accessor.getConnection().update(accessor,r);
      }
      TriggerWrapper tw=getTriggerWrapper(groupName,triggerName);
      if (tw != null) {
        removeWaitingTrigger(tw.getTrigger());
        removeAcquiredTrigger(tw.getTrigger(),instanceId);
        rev=tw.getRevision();
        logger.debug("String_Node_Str",new Object[]{triggerName,groupName});
        DeleteRequest r=Requests.newDeleteRequest(triggerId);
        r.setRevision(rev);
        accessor.getConnection().delete(accessor,r);
        String jobName=tw.getTrigger().getJobName();
        JobWrapper jw=getJobWrapper(groupName,jobName);
        if (jw != null) {
          if (!jw.getJobDetail().isDurable()) {
            String jobId=getJobsRepoId(groupName,jobName);
            JobGroupWrapper jgw=getOrCreateJobGroupWrapper(groupName);
            List<String> jobNames=jgw.getJobNames();
            if (jobNames.contains(jobName)) {
              jgw.removeJob(jobName);
              UpdateRequest ru=Requests.newUpdateRequest(getJobGroupsRepoId(groupName),jgw.getValue());
              ru.setRevision(jgw.getRevision());
              accessor.getConnection().update(accessor,ru);
            }
            logger.debug("String_Node_Str",new Object[]{jobName,groupName});
            r=Requests.newDeleteRequest(jobId);
            r.setRevision(jw.getRevision());
            accessor.getConnection().delete(accessor,r);
          }
        }
        return true;
      }
      return false;
    }
 catch (    Exception e) {
      logger.warn("String_Node_Str",triggerName,e);
      throw new JobPersistenceException("String_Node_Str",e);
    }
  }
}