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################################################################################
# This test will update in parallel, in the same member, N transactions
# with N different clients.
#
# The success of this test is determined by its termination. Any failure
# in the parallelism of a transaction shall make some transactions be
# rollback.
#
# Test:
# 0. The test requires one server.
# 1. With member ONLINE, create 20 clients connections. Create initial data.
# 2. Update the same row on server 1 in parallel by all clients.
# 3. Assert that the row has the expected value, the total number of updates.
# 4. Disconnect clients connections.
# 5. Clean up.
################################################################################
--source include/have_group_replication_plugin.inc
--source include/group_replication.inc
--let $clients= 20
--let $updates= 100
--echo
--echo ################################################################
--echo # 1. Create clients connections.
--let $clients_counter= $clients
while($clients_counter > 0)
{
--connect(server1_$clients_counter, localhost,root,,,$MASTER_MYPORT)
--dec $clients_counter
}
--echo
--echo ################################################################
--echo # 2. Create initial data.
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
CREATE TABLE t1 (c1 INT NOT NULL PRIMARY KEY, c2 INT NOT NULL) ENGINE=InnoDB;
INSERT INTO t1 (c1,c2) VALUES (0,0);
--source include/rpl_sync.inc
--echo
--echo ################################################################
--echo # 3. Update the same row on server 1 in parallel by all clients.
--disable_query_log
--let $updates_counter= $updates
while($updates_counter > 0)
{
--let $clients_counter= $clients
while($clients_counter > 0)
{
--connection server1_$clients_counter
--send UPDATE t1 SET c2=c2+1 WHERE c1=0
--dec $clients_counter
}
--let $clients_counter= $clients
while($clients_counter > 0)
{
--connection server1_$clients_counter
--reap
--dec $clients_counter
}
--dec $updates_counter
}
--enable_query_log
--echo
--echo ################################################################
--echo # 4. Assert that the row has the expected value, the total
--echo # number of updates.
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
--let $assert_text= Table t1 must have 1 entry
--let $assert_cond= [SELECT COUNT(*) AS count FROM t1, count, 1] = 1
--source include/assert.inc
--let $_total_updates= `SELECT $clients * $updates`
--let $assert_text= Table t1 entry must have total number of updates as c2 value
--let $assert_cond= [SELECT c2 FROM t1 WHERE c1=0] = $_total_updates
--source include/assert.inc
--echo
--echo ################################################################
--echo # 5. Disconnect clients connections.
--let $clients_counter= $clients
while($clients_counter > 0)
{
--disconnect server1_$clients_counter
--dec $clients_counter
}
--echo
--echo ################################################################
--echo # 6. Clean up,
DROP TABLE t1;
--source include/group_replication_end.inc
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