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Manual merge (moved the check for log_table before name lock)

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This commit is contained in:
Mattias Jonsson 2010-02-12 10:03:10 +01:00
commit afc3eba1f6
5 changed files with 191 additions and 27 deletions
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57
mysql-test/r/partition_debug_sync.result Normal file
View file

@ -0,0 +1,57 @@
DROP TABLE IF EXISTS t1, t2;
SET DEBUG_SYNC= 'RESET';
#
# Bug#42438: Crash ha_partition::change_table_ptr
# Test when remove partitioning is done while drop table is waiting
# for the table.
# Con 1
SET DEBUG_SYNC= 'RESET';
CREATE TABLE t1
(a INTEGER,
b INTEGER NOT NULL,
KEY (b))
ENGINE = MYISAM
/*!50100 PARTITION BY RANGE (a)
(PARTITION p0 VALUES LESS THAN (2),
PARTITION p1 VALUES LESS THAN (20),
PARTITION p2 VALUES LESS THAN (100),
PARTITION p3 VALUES LESS THAN MAXVALUE ) */;
SET DEBUG_SYNC= 'alter_table_before_create_table_no_lock SIGNAL removing_partitioning WAIT_FOR waiting_for_alter';
SET DEBUG_SYNC= 'alter_table_before_main_binlog SIGNAL partitioning_removed';
ALTER TABLE t1 REMOVE PARTITIONING;
# Con default
SET DEBUG_SYNC= 'now WAIT_FOR removing_partitioning';
SET DEBUG_SYNC= 'waiting_for_table SIGNAL waiting_for_alter';
SET DEBUG_SYNC= 'rm_table_part2_before_delete_table WAIT_FOR partitioning_removed';
DROP TABLE IF EXISTS t1;
# Con 1
SET DEBUG_SYNC= 'RESET';
SET DEBUG_SYNC= 'RESET';
#
# Bug#42438: Crash ha_partition::change_table_ptr
# Test when remove partitioning is failing due to drop table is already
# in progress.
CREATE TABLE t2
(a INTEGER,
b INTEGER NOT NULL,
KEY (b))
ENGINE = MYISAM
/*!50100 PARTITION BY RANGE (a)
(PARTITION p0 VALUES LESS THAN (2),
PARTITION p1 VALUES LESS THAN (20),
PARTITION p2 VALUES LESS THAN (100),
PARTITION p3 VALUES LESS THAN MAXVALUE ) */;
SET DEBUG_SYNC= 'before_lock_tables_takes_lock SIGNAL removing_partitions WAIT_FOR waiting_for_alter';
SET DEBUG_SYNC= 'alter_table_before_rename_result_table WAIT_FOR delete_done';
ALTER TABLE t2 REMOVE PARTITIONING;
# Con default
SET DEBUG_SYNC= 'now WAIT_FOR removing_partitions';
SET DEBUG_SYNC= 'waiting_for_table SIGNAL waiting_for_alter';
SET DEBUG_SYNC= 'rm_table_part2_before_binlog SIGNAL delete_done';
DROP TABLE IF EXISTS t2;
# Con 1
ERROR 42S02: Table 'test.t2' doesn't exist
SET DEBUG_SYNC= 'RESET';
# Con default
SET DEBUG_SYNC= 'RESET';
End of 5.1 tests

81
mysql-test/t/partition_debug_sync.test Normal file
View file

@ -0,0 +1,81 @@
#--disable_abort_on_error
#
# Test for the partition storage engine which require DEBUG_SYNC feature to
# Created by Mattias Jonsson
#
--source include/have_partition.inc
--source include/have_debug_sync.inc
--disable_warnings
DROP TABLE IF EXISTS t1, t2;
SET DEBUG_SYNC= 'RESET';
--enable_warnings
--echo #
--echo # Bug#42438: Crash ha_partition::change_table_ptr
--echo # Test when remove partitioning is done while drop table is waiting
--echo # for the table.
connect(con1, localhost, root,,);
--echo # Con 1
SET DEBUG_SYNC= 'RESET';
CREATE TABLE t1
(a INTEGER,
b INTEGER NOT NULL,
KEY (b))
ENGINE = MYISAM
/*!50100 PARTITION BY RANGE (a)
(PARTITION p0 VALUES LESS THAN (2),
PARTITION p1 VALUES LESS THAN (20),
PARTITION p2 VALUES LESS THAN (100),
PARTITION p3 VALUES LESS THAN MAXVALUE ) */;
SET DEBUG_SYNC= 'alter_table_before_create_table_no_lock SIGNAL removing_partitioning WAIT_FOR waiting_for_alter';
SET DEBUG_SYNC= 'alter_table_before_main_binlog SIGNAL partitioning_removed';
--send ALTER TABLE t1 REMOVE PARTITIONING
connection default;
--echo # Con default
SET DEBUG_SYNC= 'now WAIT_FOR removing_partitioning';
SET DEBUG_SYNC= 'waiting_for_table SIGNAL waiting_for_alter';
SET DEBUG_SYNC= 'rm_table_part2_before_delete_table WAIT_FOR partitioning_removed';
DROP TABLE IF EXISTS t1;
--echo # Con 1
connection con1;
--reap
connection default;
SET DEBUG_SYNC= 'RESET';
connection con1;
SET DEBUG_SYNC= 'RESET';
--echo #
--echo # Bug#42438: Crash ha_partition::change_table_ptr
--echo # Test when remove partitioning is failing due to drop table is already
--echo # in progress.
CREATE TABLE t2
(a INTEGER,
b INTEGER NOT NULL,
KEY (b))
ENGINE = MYISAM
/*!50100 PARTITION BY RANGE (a)
(PARTITION p0 VALUES LESS THAN (2),
PARTITION p1 VALUES LESS THAN (20),
PARTITION p2 VALUES LESS THAN (100),
PARTITION p3 VALUES LESS THAN MAXVALUE ) */;
SET DEBUG_SYNC= 'before_lock_tables_takes_lock SIGNAL removing_partitions WAIT_FOR waiting_for_alter';
SET DEBUG_SYNC= 'alter_table_before_rename_result_table WAIT_FOR delete_done';
--send ALTER TABLE t2 REMOVE PARTITIONING
connection default;
--echo # Con default
SET DEBUG_SYNC= 'now WAIT_FOR removing_partitions';
SET DEBUG_SYNC= 'waiting_for_table SIGNAL waiting_for_alter';
SET DEBUG_SYNC= 'rm_table_part2_before_binlog SIGNAL delete_done';
DROP TABLE IF EXISTS t2;
--echo # Con 1
connection con1;
--error ER_NO_SUCH_TABLE
--reap
SET DEBUG_SYNC= 'RESET';
disconnect con1;
connection default;
--echo # Con default
SET DEBUG_SYNC= 'RESET';
--echo End of 5.1 tests

33
sql/ha_partition.cc
View file

@ -1746,13 +1746,23 @@ void ha_partition::update_create_info(HA_CREATE_INFO *create_info)
void ha_partition::change_table_ptr(TABLE *table_arg, TABLE_SHARE *share)
{
handler **file_array= m_file;
handler **file_array;
table= table_arg;
table_share= share;
do
/*
m_file can be NULL when using an old cached table in DROP TABLE, when the
table just has REMOVED PARTITIONING, see Bug#42438
*/
if (m_file)
{
(*file_array)->change_table_ptr(table_arg, share);
} while (*(++file_array));
file_array= m_file;
DBUG_ASSERT(*file_array);
do
{
(*file_array)->change_table_ptr(table_arg, share);
} while (*(++file_array));
}
if (m_added_file && m_added_file[0])
{
/* if in middle of a drop/rename etc */
@ -6055,7 +6065,13 @@ void ha_partition::print_error(int error, myf errflag)
if (error == HA_ERR_NO_PARTITION_FOUND)
m_part_info->print_no_partition_found(table);
else
m_file[m_last_part]->print_error(error, errflag);
{
/* In case m_file has not been initialized, like in bug#42438 */
if (m_file)
m_file[m_last_part]->print_error(error, errflag);
else
handler::print_error(error, errflag);
}
DBUG_VOID_RETURN;
}
@ -6065,7 +6081,12 @@ bool ha_partition::get_error_message(int error, String *buf)
DBUG_ENTER("ha_partition::get_error_message");
/* Should probably look for my own errors first */
DBUG_RETURN(m_file[m_last_part]->get_error_message(error, buf));
/* In case m_file has not been initialized, like in bug#42438 */
if (m_file)
DBUG_RETURN(m_file[m_last_part]->get_error_message(error, buf));
DBUG_RETURN(handler::get_error_message(error, buf));
}

1
sql/sql_base.cc
View file

@ -2169,6 +2169,7 @@ void wait_for_condition(THD *thd, pthread_mutex_t *mutex, pthread_cond_t *cond)
proc_info=thd->proc_info;
thd_proc_info(thd, "Waiting for table");
DBUG_ENTER("wait_for_condition");
DEBUG_SYNC(thd, "waiting_for_table");
if (!thd->killed)
(void) pthread_cond_wait(cond, mutex);

46
sql/sql_table.cc
View file

@ -22,6 +22,9 @@
#include "sp_head.h"
#include "sql_trigger.h"
#include "sql_show.h"
#if defined(ENABLED_DEBUG_SYNC)
#include "debug_sync.h"
#endif
#ifdef __WIN__
#include <io.h>
@ -1889,22 +1892,10 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
pthread_mutex_lock(&LOCK_open);
/*
If we have the table in the definition cache, we don't have to check the
.frm file to find if the table is a normal table (not view) and what
engine to use.
*/
/* Disable drop of enabled log tables, must be done before name locking */
for (table= tables; table; table= table->next_local)
{
TABLE_SHARE *share;
table->db_type= NULL;
if ((share= get_cached_table_share(table->db, table->table_name)))
table->db_type= share->db_type();
/* Disable drop of enabled log tables */
if (share && (share->table_category == TABLE_CATEGORY_PERFORMANCE) &&
check_if_log_table(table->db_length, table->db,
if (check_if_log_table(table->db_length, table->db,
table->table_name_length, table->table_name, 1))
{
my_error(ER_BAD_LOG_STATEMENT, MYF(0), "DROP");
@ -1923,7 +1914,7 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
{
char *db=table->db;
handlerton *table_type;
enum legacy_db_type frm_db_type;
enum legacy_db_type frm_db_type= DB_TYPE_UNKNOWN;
DBUG_PRINT("table", ("table_l: '%s'.'%s' table: 0x%lx s: 0x%lx",
table->db, table->table_name, (long) table->table,
@ -1988,7 +1979,6 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
built_query.append("`,");
}
table_type= table->db_type;
if (!drop_temporary)
{
TABLE *locked_table;
@ -2015,9 +2005,9 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
table->internal_tmp_table ?
FN_IS_TMP : 0);
}
DEBUG_SYNC(thd, "rm_table_part2_before_delete_table");
if (drop_temporary ||
((table_type == NULL &&
access(path, F_OK) &&
((access(path, F_OK) &&
ha_create_table_from_engine(thd, db, alias)) ||
(!drop_view &&
mysql_frm_type(thd, path, &frm_db_type) != FRMTYPE_TABLE)))
@ -2033,15 +2023,25 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
else
{
char *end;
if (table_type == NULL)
/*
Cannot use the db_type from the table, since that might have changed
while waiting for the exclusive name lock. We are under LOCK_open,
so reading from the frm-file is safe.
*/
if (frm_db_type == DB_TYPE_UNKNOWN)
{
mysql_frm_type(thd, path, &frm_db_type);
table_type= ha_resolve_by_legacy_type(thd, frm_db_type);
mysql_frm_type(thd, path, &frm_db_type);
DBUG_PRINT("info", ("frm_db_type %d from %s", frm_db_type, path));
}
table_type= ha_resolve_by_legacy_type(thd, frm_db_type);
// Remove extension for delete
*(end= path + path_length - reg_ext_length)= '\0';
DBUG_PRINT("info", ("deleting table of type %d",
(table_type ? table_type->db_type : 0)));
error= ha_delete_table(thd, table_type, path, db, table->table_name,
!dont_log_query);
/* No error if non existent table and 'IF EXIST' clause or view */
if ((error == ENOENT || error == HA_ERR_NO_SUCH_TABLE) &&
(if_exists || table_type == NULL))
{
@ -2081,6 +2081,7 @@ int mysql_rm_table_part2(THD *thd, TABLE_LIST *tables, bool if_exists,
on the table name.
*/
pthread_mutex_unlock(&LOCK_open);
DEBUG_SYNC(thd, "rm_table_part2_before_binlog");
thd->thread_specific_used|= tmp_table_deleted;
error= 0;
if (wrong_tables.length())
@ -7120,6 +7121,7 @@ view_err:
else
create_info->data_file_name=create_info->index_file_name=0;
DEBUG_SYNC(thd, "alter_table_before_create_table_no_lock");
/*
Create a table with a temporary name.
With create_info->frm_only == 1 this creates a .frm file only.
@ -7320,6 +7322,7 @@ view_err:
intern_close_table(new_table);
my_free(new_table,MYF(0));
}
DEBUG_SYNC(thd, "alter_table_before_rename_result_table");
VOID(pthread_mutex_lock(&LOCK_open));
if (error)
{
@ -7462,6 +7465,7 @@ view_err:
thd_proc_info(thd, "end");
DBUG_EXECUTE_IF("sleep_alter_before_main_binlog", my_sleep(6000000););
DEBUG_SYNC(thd, "alter_table_before_main_binlog");
ha_binlog_log_query(thd, create_info->db_type, LOGCOM_ALTER_TABLE,
thd->query(), thd->query_length(),