mariadb/mysql-test/include/rpl_stop_server.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

65 lines
2.1 KiB
PHP

# ==== Purpose ====
#
# Stop the server given by $rpl_server_number.
#
# ==== Usage ====
#
# --let $rpl_server_number= N
# [--let $rpl_debug= 1]
# --source include/rpl_stop_server.inc
#
# Parameters:
#
# $rpl_server_number
# Number to identify the server that needs to reconnect. 1 is the
# master server, 2 the slave server, 3 the 3rd server, and so on.
# Cf. include/rpl_init.inc
#
# $rpl_debug
# See include/rpl_init.inc
#
# ==== See also ====
#
# rpl_start_server.inc
# rpl_restart_server.inc
# Can't use begin_include_file / end_include_file because they require
# executing on a server and the server will go down after this script.
if (!$_include_file_depth)
{
--echo include/rpl_stop_server.inc [server_number=$rpl_server_number]
}
--inc $_include_file_depth
--let $_rpl_stop_server_old_connection= $CURRENT_CONNECTION
if ($rpl_debug)
{
--echo $_include_file_indent con='$CURRENT_CONNECTION' warn='$ENABLED_WARNINGS' qlog='$ENABLED_QUERY_LOG' rlog='$ENABLED_RESULT_LOG' aborterr='$ENABLED_ABORT_ON_ERROR'
--echo $_include_file_indent==== BEGIN include/$include_filename ====
}
--let $rpl_connection_name= server_$rpl_server_number
--source include/rpl_connection.inc
# Write file to make mysql-test-run.pl expect the "crash", but don't start
# it until it's told to
--write_line wait $MYSQLTEST_VARDIR/tmp/mysqld.$rpl_server_number.expect
# Send shutdown to the connected server and give
# it 60 seconds (of mysqltest's default) to die before zapping it
let $rpl_shutdown_timeout= `select 60*(1+9*count(*)) from information_schema.system_variables where variable_name='have_sanitizer' and global_value like "MSAN%"`;
shutdown_server $rpl_shutdown_timeout;
--source include/wait_until_disconnected.inc
--let $rpl_connection_name= $_rpl_stop_server_old_connection
--source include/rpl_connection.inc
--dec $_include_file_depth
if ($rpl_debug)
{
--echo $_include_file_indent==== END include/rpl_stop_server.inc [server_number=$rpl_server_number] ====
--echo $_include_file_indent con='$CURRENT_CONNECTION' warn='$ENABLED_WARNINGS' qlog='$ENABLED_QUERY_LOG' rlog='$ENABLED_RESULT_LOG' aborterr='$ENABLED_ABORT_ON_ERROR'
}