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call mtr.add_suppression("Table 't1' is marked as crashed and should be repaired");
set @save_table_definition_cache=@@table_definition_cache;
#
# Tests for corrupted MyISAM tables and MyISAMMRG tables with corrupted
# children..
#
# Run with --myisam-recover=force option.
#
# Preparation: we need to make sure that the merge parent
# is never left in the table cache when closed, since this may
# have effect on merge children.
# For that, we set the table cache to minimal size and populate it
# in a concurrent connection.
connect con1,localhost,root,,test,,;
connection con1;
#
# Minimal values.
#
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 @save_table_open_cache=@@table_open_cache;
set global table_open_cache=256;
set global table_definition_cache=400;
drop procedure if exists p_create;
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|
call p_create();
drop procedure p_create;
connection default;
#
# We have to disable the ps-protocol, to avoid
# "Prepared statement needs to be re-prepared" errors
# -- table def versions change all the time with full table cache.
#
drop table if exists t1, t1_mrg, t1_copy;
#
# Prepare a MERGE engine table, that refers to a corrupted
# child.
#
create table t1 (a int, key(a)) engine=myisam;
create table t1_mrg (a int) union (t1) engine=merge;
#
# Create a table with a corrupted index file:
# save an old index file, insert more rows,
# overwrite the new index file with the old one.
#
insert into t1 (a) values (1), (2), (3);
flush table t1;
insert into t1 (a) values (4), (5), (6);
flush table t1;
# check table is needed to mark the table as crashed.
check table t1;
Table Op Msg_type Msg_text
test.t1 check warning Size of datafile is: 42 Should be: 21
test.t1 check error Record-count is not ok; is 6 Should be: 3
test.t1 check warning Found 6 key parts. Should be: 3
test.t1 check error Corrupt
#
# At this point we have a merge table t1_mrg pointing to t1,
# and t1 is corrupted, and will be auto-repaired at open.
# Check that this doesn't lead to memory corruption.
#
select * from t1_mrg;
a
1
2
3
4
5
6
Warnings:
Error 145 Table 't1' is marked as crashed and should be repaired
Warning 1034 Number of rows changed from 3 to 6
#
# Cleanup
#
drop table t1, t1_mrg;
connection con1;
unlock tables;
prepare stmt from @drop_table_stmt;
execute stmt;
deallocate prepare stmt;
set @@global.table_open_cache=@save_table_open_cache;
disconnect con1;
connection default;
set @@global.table_definition_cache=@save_table_definition_cache;
#
# 18075170 - sql node restart required to avoid deadlock after
# restore
#
# Check that auto-repair for MyISAM tables can now happen in the
# middle of transaction, without aborting it.
connection default;
create table t1 (a int, key(a)) engine=myisam;
create table t2 (a int);
insert into t2 values (1);
# Create a table with a corrupted index file:
# save an old index file, insert more rows,
# overwrite the new index file with the old one.
insert into t1 (a) values (1);
flush table t1;
insert into t1 (a) values (4);
flush table t1;
# Check table is needed to mark the table as crashed.
check table t1;
Table Op Msg_type Msg_text
test.t1 check warning Size of datafile is: 14 Should be: 7
test.t1 check error Record-count is not ok; is 2 Should be: 1
test.t1 check warning Found 2 key parts. Should be: 1
test.t1 check error Corrupt
# At this point we have a corrupt t1
set autocommit = 0;
select * from t2;
a
1
# Without fix select from t1 will break the transaction. After the fix
# transaction should be active and should hold lock on table t2. Alter
# table from con2 will wait only if the transaction is not broken.
select * from t1;
a
1
4
Warnings:
Error 145 Table 't1' is marked as crashed and should be repaired
Warning 1034 Number of rows changed from 1 to 2
connect con2, localhost, root;
ALTER TABLE t2 ADD val INT;
connection default;
# With fix we should have alter table waiting for t2 lock here.
ROLLBACK;
SET autocommit = 1;
connection con2;
connection default;
disconnect con2;
# Cleanup
drop table t1, t2;
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