There were actually more problems in this area:
Slaves (if any) were unconditionally restarted, this appears unnecessary.
Sort criteria were suboptimal, included the test name.
Added logic to "reserve" a sequence of tests with same config for one thread
Got rid of sort_criteria hash, put it into the test case itself
Adds little sanity check that expected worker picks up test
Fixed some tests that may fail if starting on running server
Some of these fail only if *same* test is repeated.
Finally, special sorting of tests that do --force-restart
The 'slave_patternload_file' is assigned to the real path of the load data file
when initializing the object of Relay_log_info. But the path of the load data
file is not formatted to real path when executing event from relay log. So the
error will be encountered if the path of the load data file is a symbolic link.
Actually the global 'opt_secure_file_priv' is not formatted to real path when
loading data from file. So the same thing will happen too.
To fix these errors, the path of the load data file should be formatted to
real path when executing event from relay log. And the 'opt_secure_file_priv'
should be formatted to real path when loading data infile.
mysql-test/suite/rpl/r/rpl_loaddata_symlink.result:
Test result for bug#43913.
mysql-test/suite/rpl/t/rpl_loaddata_symlink-master.sh:
Added the test file to create a link from $MYSQLTEST_VARDIR/std_data
to $MYSQLTEST_VARDIR/std_data_master_link
mysql-test/suite/rpl/t/rpl_loaddata_symlink-slave.sh:
Added the test file to create a link from $MYSQLTEST_VARDIR/std_data
to $MYSQLTEST_VARDIR/std_data_slave_link
mysql-test/suite/rpl/t/rpl_loaddata_symlink.test:
Added the test file to verify if loading data infile will work fine
if the path of the load data file is a symbolic link.
sql/rpl_rli.cc:
Added call 'my_realpath' function for avoiding sometimes the 'fn_format'
function can't format real path rightly.
