mariadb/mysql-test/suite/galera/include/start_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
580 B
PHP

# Include this script only after using shutdown_mysqld.inc
# where $_expect_file_name was initialized.
# Write file to make mysql-test-run.pl start up the server again
if ($galera_wsrep_start_position != '') {
--echo Using --wsrep-start-position when starting mysqld ...
--write_line "restart:$start_mysqld_params --wsrep-start-position=$galera_wsrep_start_position" $_expect_file_name
--let $galera_wsrep_start_position = 0
}
if ($galera_wsrep_start_position == '') {
--write_line "restart:$start_mysqld_params" $_expect_file_name
}
--source include/galera_wait_ready.inc