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Add extra logging when no servers are available in hostgroup #3806

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Mar 15, 2022
Merged

Add extra logging when no servers are available in hostgroup #3806

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9 changes: 8 additions & 1 deletion lib/MySQL_HostGroups_Manager.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2740,6 +2740,7 @@ MySrvC *MyHGC::get_random_MySrvC(char * gtid_uuid, uint64_t gtid_trxid, int max_
unsigned int sum=0;
unsigned int TotalUsedConn=0;
unsigned int l=mysrvs->cnt();
static time_t last_hg_log = 0;
#ifdef TEST_AURORA
unsigned long long a1 = array_mysrvc_total/10000;
array_mysrvc_total += l;
Expand Down Expand Up @@ -2889,7 +2890,6 @@ MySrvC *MyHGC::get_random_MySrvC(char * gtid_uuid, uint64_t gtid_trxid, int max_
// per issue #531 , we try a desperate attempt to bring back online any shunned server
// we do this lowering the maximum wait time to 10%
// most of the follow code is copied from few lines above
static time_t last_hg_log = 0;
time_t t;
t=time(NULL);
int max_wait_sec = ( mysql_thread___shun_recovery_time_sec * 1000 >= mysql_thread___connect_timeout_server_max ? mysql_thread___connect_timeout_server_max/10000 - 1 : mysql_thread___shun_recovery_time_sec/10 );
Expand Down Expand Up @@ -3050,6 +3050,13 @@ MySrvC *MyHGC::get_random_MySrvC(char * gtid_uuid, uint64_t gtid_trxid, int max_
return mysrvc;
}
}
} else {
time_t t = time(NULL);

if (t - last_hg_log > 1) {
last_hg_log = time(NULL);
proxy_error("Hostgroup %u has no servers available!\n", hid);
}
}
proxy_debug(PROXY_DEBUG_MYSQL_CONNPOOL, 7, "Returning MySrvC NULL\n");
if (l>32) {
Expand Down