message: debug the error
diff: /*
  * @Author: your name
  * @Date: 2021-09-23 16:55:53
  - * @LastEditTime: 2021-11-08 21:26:14
  + * @LastEditTime: 2021-11-08 23:14:26
  * @LastEditors: Please set LastEditors
  * @Description: In User Settings Edit
  * @FilePath: /gstore/Main/ghttp.cpp
  @@ -2506,7 +2506,7 @@ string update_flag,string remote_ip,string thread_id,string log_prefix)
  string str = db_query;
  -
  + string thread_id = Util::getThreadID();
  pthread_rwlock_rdlock(&databases_map_lock);
  std::map<std::string, Database *>::iterator iter = databases.find(db_name);
  if(iter == databases.end())
  @@ -2628,7 +2628,7 @@ string update_flag,string remote_ip,string thread_id,string log_prefix)
  string ansNum_s = stream.str();
  cout <<"ansNum_s: " << ansNum_s << endl;
  - string filename = Util::getTimeString2()+"_"+Util::int2string(Util::getRandNum())+".txt";
  + string filename = thread_id+"_"+Util::getTimeString2()+"_"+Util::int2string(Util::getRandNum())+".txt";
  Util::create_dir("query_result/");
  string localname = "query_result/" + filename;
  @@ -2699,7 +2699,7 @@ string update_flag,string remote_ip,string thread_id,string log_prefix)
  {
  cout<<"result parse error:"<<success<<endl;
  error="parse error";
  - string filename2 ="error_"+Util::getTimeString2()+"_"+Util::int2string(Util::getRandNum())+".txt";
  + string filename2 ="error_"+thread_id+"_"+Util::getTimeString2()+"_"+Util::int2string(Util::getRandNum())+".txt";
  string localname2 = "query_result/" + filename2;
  outfile.open(localname2);
  