Reset binlog and show no state held
reset master;
select count(1) from mysql.ndb_binlog_index;
count(1)
0
Create table for experiments
use test;
create table test.t1 (a int primary key, b varchar(1000), c text) engine=ndb;
Basic test that an insert affects Server + Session epochs
insert into test.t1 values (1, repeat("B", 1000), repeat("E", 500));
init_server_epoch_includes_session_epoch	curr_server_epoch_includes_session_epoch	server_epoch_does_not_regress	session_epoch_does_not_regress
1	1	1	1
binlog_contains_last_session_epoch
1
Basic test that a read with exclusive lock has no effect
begin;
select count(1) from test.t1 where a=1 for update;
count(1)
1
commit;
init_server_epoch_includes_session_epoch	curr_server_epoch_includes_session_epoch	server_epoch_does_not_regress	session_epoch_does_not_regress
1	1	1	1
binlog_contains_last_session_epoch
0
Basic test that a read with shared lock has no effect
begin;
select count(1) from test.t1 where a=1 lock in share mode;
count(1)
1
commit;
init_server_epoch_includes_session_epoch	curr_server_epoch_includes_session_epoch	server_epoch_does_not_regress	session_epoch_does_not_regress
1	1	1	1
binlog_contains_last_session_epoch
0
Basic test that a committedread has no effect
begin;
select count(1) from test.t1 where a=1;
count(1)
1
commit;
init_server_epoch_includes_session_epoch	curr_server_epoch_includes_session_epoch	server_epoch_does_not_regress	session_epoch_does_not_regress
1	1	1	1
binlog_contains_last_session_epoch
0
Basic test that an update affects Server + Session epochs
update test.t1 set b=repeat("E", 1000), c=repeat("A", 5000) where a=1;
init_server_epoch_includes_session_epoch	curr_server_epoch_includes_session_epoch	server_epoch_does_not_regress	session_epoch_does_not_regress
1	1	1	1
binlog_contains_last_session_epoch
1
Basic test that a delete affects Server + Session epochs
delete from test.t1 where a=1;
init_server_epoch_includes_session_epoch	curr_server_epoch_includes_session_epoch	server_epoch_does_not_regress	session_epoch_does_not_regress
1	1	1	1
binlog_contains_last_session_epoch
1
Show that server epoch is preserved across connections
but session epoch is not
server_epoch_preserved
1
session_epoch_reset
1
drop table test.t1;