Program: 89469
Project: 89469
Buggy source:
@Override public void run(){
  while (true) {
synchronized (_notificationMsgs) {
      try {
        _notificationMsgs.wait(1000);
      }
 catch (      InterruptedException e) {
      }
    }
    ClusterManagerMessage msg=null;
    while ((msg=getNextNotificationMessage()) != null) {
      try {
switch (msg.getMessageType()) {
case nodeAdded:
          if (msg.getNodes() != null && msg.getNodes().size() > 0) {
            Profiler profiler=new Profiler();
            profiler.start();
            notifyNodeJoined(msg.getNodes());
            profiler.stop();
            if (profiler.getDuration() > 1000) {
              if (s_logger.isDebugEnabled()) {
                s_logger.debug("String_Node_Str" + profiler.getDuration() + "String_Node_Str");
              }
            }
 else {
              s_logger.warn("String_Node_Str" + profiler.getDuration() + "String_Node_Str");
            }
          }
        break;
case nodeRemoved:
      if (msg.getNodes() != null && msg.getNodes().size() > 0) {
        Profiler profiler=new Profiler();
        profiler.start();
        notifyNodeLeft(msg.getNodes());
        profiler.stop();
        if (profiler.getDuration() > 1000) {
          if (s_logger.isDebugEnabled()) {
            s_logger.debug("String_Node_Str" + profiler.getDuration() + "String_Node_Str");
          }
        }
 else {
          s_logger.warn("String_Node_Str" + profiler.getDuration() + "String_Node_Str");
        }
      }
    break;
case nodeIsolated:
  notifyNodeIsolated();
break;
default :
assert(false);
break;
}
}
 catch (Throwable e) {
s_logger.warn("String_Node_Str",e);
}
}
try {
Thread.currentThread().sleep(1000);
}
 catch (InterruptedException e) {
}
}
}

Fixed version (ground truth):
@Override public void run(){
  while (true) {
synchronized (_notificationMsgs) {
      try {
        _notificationMsgs.wait(1000);
      }
 catch (      InterruptedException e) {
      }
    }
    ClusterManagerMessage msg=null;
    while ((msg=getNextNotificationMessage()) != null) {
      try {
switch (msg.getMessageType()) {
case nodeAdded:
          if (msg.getNodes() != null && msg.getNodes().size() > 0) {
            Profiler profiler=new Profiler();
            profiler.start();
            notifyNodeJoined(msg.getNodes());
            profiler.stop();
            if (profiler.getDuration() > 1000) {
              if (s_logger.isDebugEnabled()) {
                s_logger.debug("String_Node_Str" + profiler.getDuration() + "String_Node_Str");
              }
            }
 else {
              s_logger.warn("String_Node_Str" + profiler.getDuration() + "String_Node_Str");
            }
          }
        break;
case nodeRemoved:
      if (msg.getNodes() != null && msg.getNodes().size() > 0) {
        Profiler profiler=new Profiler();
        profiler.start();
        notifyNodeLeft(msg.getNodes());
        profiler.stop();
        if (profiler.getDuration() > 1000) {
          if (s_logger.isDebugEnabled()) {
            s_logger.debug("String_Node_Str" + profiler.getDuration() + "String_Node_Str");
          }
        }
 else {
          s_logger.warn("String_Node_Str" + profiler.getDuration() + "String_Node_Str");
        }
      }
    break;
case nodeIsolated:
  notifyNodeIsolated();
break;
default :
assert(false);
break;
}
}
 catch (Throwable e) {
s_logger.warn("String_Node_Str",e);
}
}
try {
Thread.sleep(1000);
}
 catch (InterruptedException e) {
}
}
}