mariadb/mysql-test/include/kill_and_restart_mysqld.inc
Vladislav Vaintroub 061adae9a2 MDEV-16944 Fix file sharing issues on Windows in mysqltest
On Windows systems, occurrences of ERROR_SHARING_VIOLATION due to
conflicting share modes between processes accessing the same file can
result in CreateFile failures.

mysys' my_open() already incorporates a workaround by implementing
wait/retry logic on Windows.

But this does not help if files are opened using shell redirection like
mysqltest traditionally did it, i.e via

--echo exec "some text" > output_file

In such cases, it is cmd.exe, that opens the output_file, and it
won't do any sharing-violation retries.

This commit addresses the issue by introducing a new built-in command,
'write_line', in mysqltest. This new command serves as a brief alternative
to 'write_file', with a single line output, that also resolves variables
like "exec" would.

Internally, this command will use my_open(), and therefore retry-on-error
logic.

Hopefully this will eliminate the very sporadic "can't open file because
it is used by another process" error on CI.
2024-04-17 16:52:37 +02:00

15 lines
427 B
PHP

if (!$restart_parameters)
{
let $restart_parameters = restart;
}
--let $_server_id= `SELECT @@server_id`
--let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/mysqld.$_server_id.expect
--echo # Kill and $restart_parameters
--write_line "$restart_parameters" $_expect_file_name
--shutdown_server 0
--source include/wait_until_disconnected.inc
--enable_reconnect
--source include/wait_until_connected_again.inc
--disable_reconnect