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Dir : ~/www/server/mysql/mysql-test/suite/perfschema/t/

Edit File: hostcache_ipv4_nameinfo_again_allow.test

#
# Tests for the performance_schema host_cache.
#
# Simulate failures from DNS:
# - getnameinfo() fails with AGAIN
# - reported in COUNT_NAMEINFO_TRANSIENT_ERRORS

--source include/not_embedded.inc
--source include/have_debug.inc
--source include/have_perfschema.inc

# [Warning] IP address '192.0.2.4' could not be resolved:
# Temporary failure in name resolution
call mtr.add_suppression("192.0.2.4");

# Enforce a clean state
--source ../include/wait_for_pfs_thread_count.inc
--source ../include/hostcache_set_state.inc

set @orig_sql_mode= @@sql_mode;
set sql_mode= (select replace(@@sql_mode,'NO_AUTO_CREATE_USER',''));
grant select on test.* to 'root'@'192.0.2.4';
grant select on test.* to 'root'@'santa.claus.ipv4.example.com';
set sql_mode= @orig_sql_mode;

connect (con1,"127.0.0.1",root,,test,$MASTER_MYPORT,);
select "Con1 is alive";
select current_user();
disconnect con1;

--connection default
set global debug= "+d,vio_peer_addr_fake_ipv4,getnameinfo_error_again";

connect (con2,"127.0.0.1",root,,test,$MASTER_MYPORT,);
select "Con2 is alive";
select current_user();
disconnect con2;

--connection default
--source ../include/hostcache_dump.inc

connect (con3,"127.0.0.1",root,,test,$MASTER_MYPORT,);
select "Con3 is alive";
select current_user();
disconnect con3;

--connection default
--source ../include/hostcache_dump.inc

set global debug= "+d,vio_peer_addr_fake_ipv4,getnameinfo_fake_ipv4,getaddrinfo_fake_good_ipv4";

connect (con4,"127.0.0.1",root,,test,$MASTER_MYPORT,);
select "Con4 is alive";
select current_user();
disconnect con4;

--connection default
--source ../include/hostcache_dump.inc

connect (con5,"127.0.0.1",root,,test,$MASTER_MYPORT,);
select "Con5 is alive";
select current_user();
disconnect con5;

--connection default
--source ../include/hostcache_dump.inc

revoke select on test.* from 'root'@'192.0.2.4';
revoke select on test.* from 'root'@'santa.claus.ipv4.example.com';
drop user 'root'@'192.0.2.4';
drop user 'root'@'santa.claus.ipv4.example.com';

set global debug= default;