Program: 116072
Project: 116072
Buggy source:
/** 
 * Will set the status of the monitor based on Topology Group status/child status like scaling
 * @param status status of the group
 */
public void setStatus(GroupStatus status,String instanceId){
  GroupInstance groupInstance=(GroupInstance)this.instanceIdToInstanceMap.get(instanceId);
  if (groupInstance == null) {
    if (status != GroupStatus.Terminated) {
      log.warn("String_Node_Str" + instanceId + "String_Node_Str");
    }
  }
 else {
    if (groupInstance.getStatus() != status) {
      groupInstance.setStatus(status);
    }
  }
  log.info("String_Node_Str" + this.id + "String_Node_Str"+ this.parent.getId());
  if (this.isGroupScalingEnabled()) {
    try {
      ApplicationHolder.acquireReadLock();
      Application application=ApplicationHolder.getApplications().getApplication(this.appId);
      if (application != null) {
        Group group=application.getGroupRecursively(this.id);
        if (group != null) {
          GroupInstance context=group.getInstanceContexts(instanceId);
          MonitorStatusEventBuilder.handleGroupStatusEvent(this.parent,status,this.id,context.getParentId());
        }
      }
    }
  finally {
      ApplicationHolder.releaseReadLock();
    }
  }
 else {
    MonitorStatusEventBuilder.handleGroupStatusEvent(this.parent,status,this.id,instanceId);
  }
  try {
    MonitorStatusEventBuilder.notifyChildren(this,new GroupStatusEvent(status,this.id,instanceId));
  }
 catch (  MonitorNotFoundException e) {
    log.error("String_Node_Str" + this.id,e);
  }
}

Fixed version (ground truth):
/** 
 * Will set the status of the monitor based on Topology Group status/child status like scaling
 * @param status status of the group
 */
public void setStatus(GroupStatus status,String instanceId,String parentInstanceId){
  GroupInstance groupInstance=(GroupInstance)this.instanceIdToInstanceMap.get(instanceId);
  if (groupInstance == null) {
    if (status != GroupStatus.Terminated) {
      log.warn("String_Node_Str" + instanceId + "String_Node_Str");
    }
  }
 else {
    if (groupInstance.getStatus() != status) {
      groupInstance.setStatus(status);
    }
  }
  if (this.isGroupScalingEnabled()) {
    try {
      ApplicationHolder.acquireReadLock();
      Application application=ApplicationHolder.getApplications().getApplication(this.appId);
      if (application != null) {
        Group group=application.getGroupRecursively(this.id);
        if (group != null) {
          GroupInstance context=group.getInstanceContexts(instanceId);
          log.info("String_Node_Str" + this.id + "String_Node_Str"+ this.parent.getId()+ "String_Node_Str"+ context.getParentId());
          MonitorStatusEventBuilder.handleGroupStatusEvent(this.parent,status,this.id,parentInstanceId);
        }
      }
    }
  finally {
      ApplicationHolder.releaseReadLock();
    }
  }
 else {
    log.info("String_Node_Str" + this.id + "String_Node_Str"+ this.parent.getId()+ "String_Node_Str"+ instanceId);
    MonitorStatusEventBuilder.handleGroupStatusEvent(this.parent,status,this.id,instanceId);
  }
  try {
    MonitorStatusEventBuilder.notifyChildren(this,new GroupStatusEvent(status,this.id,instanceId));
  }
 catch (  MonitorNotFoundException e) {
    log.error("String_Node_Str" + this.id,e);
  }
}