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061adae9a2
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.
35 lines
1 KiB
PHP
35 lines
1 KiB
PHP
#
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# We can not use the common include/restart_mysqld.inc or include/rpl_restart_server.inc,
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# because they have hardcoded connection names (master, master1)
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# which are not initiated by rpl_init.inc.
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# This is the relevant and simplified part of the same set of scripts.
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#
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# ==== Usage ====
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#
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# --let $rpl_server_number= N
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# Number to identify the server that needs to reconnect.
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# 1 is the master server, 2 the slave server
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# [--let $rpl_server_parameters= --flag1 --flag2 ...]
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# --source restart_server.inc
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#
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--let $_cur_con= $CURRENT_CONNECTION
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--connection default
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--enable_reconnect
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--connection $_cur_con
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--enable_reconnect
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--write_line wait $MYSQLTEST_VARDIR/tmp/mysqld.$rpl_server_number.expect
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shutdown_server;
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--source include/wait_until_disconnected.inc
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--let $_rpl_start_server_command= restart
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if ($rpl_server_parameters)
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{
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--let $_rpl_start_server_command= restart:$rpl_server_parameters
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}
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--write_line "$_rpl_start_server_command" $MYSQLTEST_VARDIR/tmp/mysqld.$rpl_server_number.expect
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--source include/wait_until_connected_again.inc
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