/usr/lib/mysql-testsuite/t/merge_recover.test is in percona-server-test-5.6 5.6.22-rel71.0-0ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 | --echo #
--echo # Test of MyISAM MRG tables with corrupted children.
--echo # Run with --myisam-recover=force option.
--echo #
--echo # Preparation: we need to make sure that the merge parent
--echo # is never left in the table cache when closed, since this may
--echo # have effect on merge children.
--echo # For that, we set the table cache to minimal size and populate it
--echo # in a concurrent connection.
connect(con1,localhost,root,,test,,);
--echo #
--echo # Switching to connection con1
--echo #
connection con1;
--echo #
--echo # Minimal values.
--echo #
call mtr.add_suppression("Got an error from thread_id=.*ha_myisam.cc:");
call mtr.add_suppression("MySQL thread id .*, query id .* localhost.*root Checking table");
call mtr.add_suppression(" '\..test.t1'");
set global table_open_cache=256;
set global table_definition_cache=400;
--disable_warnings
drop procedure if exists p_create;
--enable_warnings
delimiter |;
create procedure p_create()
begin
declare i int default 1;
set @lock_table_stmt="lock table ";
set @drop_table_stmt="drop table ";
while i < @@global.table_definition_cache + 1 do
set @table_name=concat("t_", i);
set @opt_comma=if(i=1, "", ", ");
set @lock_table_stmt=concat(@lock_table_stmt, @opt_comma,
@table_name, " read");
set @drop_table_stmt=concat(@drop_table_stmt, @opt_comma, @table_name);
set @create_table_stmt=concat("create table if not exists ",
@table_name, " (a int)");
prepare stmt from @create_table_stmt;
execute stmt;
deallocate prepare stmt;
set i= i+1;
end while;
end|
delimiter ;|
call p_create();
drop procedure p_create;
--disable_query_log
let $lock=`select @lock_table_stmt`;
eval $lock;
--enable_query_log
--echo #
--echo # Switching to connection 'default'
--echo #
connection default;
--echo #
--echo # We have to disable the ps-protocol, to avoid
--echo # "Prepared statement needs to be re-prepared" errors
--echo # -- table def versions change all the time with full table cache.
--echo #
--disable_ps_protocol
--disable_warnings
drop table if exists t1, t1_mrg, t1_copy;
--enable_warnings
let $MYSQLD_DATADIR=`select @@datadir`;
--echo #
--echo # Prepare a MERGE engine table, that refers to a corrupted
--echo # child.
--echo #
create table t1 (a int, key(a)) engine=myisam;
create table t1_mrg (a int) union (t1) engine=merge;
--echo #
--echo # Create a table with a corrupted index file:
--echo # save an old index file, insert more rows,
--echo # overwrite the new index file with the old one.
--echo #
insert into t1 (a) values (1), (2), (3);
flush table t1;
--copy_file $MYSQLD_DATADIR/test/t1.MYI $MYSQLD_DATADIR/test/t1_copy.MYI
insert into t1 (a) values (4), (5), (6);
flush table t1;
--remove_file $MYSQLD_DATADIR/test/t1.MYI
--copy_file $MYSQLD_DATADIR/test/t1_copy.MYI $MYSQLD_DATADIR/test/t1.MYI
--remove_file $MYSQLD_DATADIR/test/t1_copy.MYI
--echo # check table is needed to mark the table as crashed.
check table t1;
--echo #
--echo # At this point we have a merge table t1_mrg pointing to t1,
--echo # and t1 is corrupted, and will be auto-repaired at open.
--echo # Check that this doesn't lead to memory corruption.
--echo #
--replace_regex /'.*[\/\\]/'/
select * from t1_mrg;
--echo #
--echo # Cleanup
--echo #
drop table t1, t1_mrg;
--echo #
--echo # Switching to connection con1
--echo #
connection con1;
unlock tables;
prepare stmt from @drop_table_stmt;
execute stmt;
deallocate prepare stmt;
set @@global.table_definition_cache=default;
set @@global.table_open_cache=default;
disconnect con1;
connection default;
--enable_ps_protocol
|