Hi Sergei, Regarding 3be269542f4d18eaee0ad8fbeffa55708557879f, I have one comment (see below), otherwise ok to push.

[... 62 lines elided] diff --git a/storage/spider/spd_param.cc b/storage/spider/spd_param.cc index 2da262cd2bc..308857d153a 100644 --- a/storage/spider/spd_param.cc +++ b/storage/spider/spd_param.cc @@ -116,16 +116,20 @@ extern volatile ulonglong spider_mon_table_cache_version_req; MYSQL_SYSVAR_NAME(param_name).def_val; \ } +extern handlerton *spider_hton_ptr; static int spider_trx_status_var(THD *thd, SHOW_VAR *var, char *buff, ulonglong SPIDER_TRX::*counter) { - int error_num = 0; - SPIDER_TRX *trx; DBUG_ENTER("spider_direct_update"); var->type = SHOW_LONGLONG; - if ((trx = spider_get_trx(thd, TRUE, &error_num))) - var->value = (char *) &(trx->*counter); - DBUG_RETURN(error_num); + var->value= buff; + if (thd != current_thd) + mysql_mutex_lock(&thd->LOCK_thd_data); + SPIDER_TRX *trx = (SPIDER_TRX*)thd_get_ha_data(thd, spider_hton_ptr); + *(ulonglong*)buff= trx ? trx->*counter : 0; + if (thd != current_thd) + mysql_mutex_unlock(&thd->LOCK_thd_data); + DBUG_RETURN(0);

If it always returns 0, how about we change the signature of this function to return void?

}

Best, Yuchen