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;