MySQL  8.0.20
Source Code Documentation
log0ddl.h File Reference

DDL log. More...

Go to the source code of this file.

Classes

class  DDL_Record
 DDL log record. More...
 
class  DDL_Log_Table
 Wrapper of mysql.innodb_ddl_log table. More...
 
class  Log_DDL
 Class to write and replay ddl logs. More...
 

Typedefs

using DDL_Records = std::vector< DDL_Record * >
 Array of DDL records. More...
 

Enumerations

enum  Log_Type : uint32_t {
  Log_Type::SMALLEST_LOG = 1, Log_Type::FREE_TREE_LOG = 1, Log_Type::DELETE_SPACE_LOG, Log_Type::RENAME_SPACE_LOG,
  Log_Type::DROP_LOG, Log_Type::RENAME_TABLE_LOG, Log_Type::REMOVE_CACHE_LOG, Log_Type::ALTER_ENCRYPT_TABLESPACE_LOG,
  Log_Type::BIGGEST_LOG = ALTER_ENCRYPT_TABLESPACE_LOG
}
 DDL log types defined as uint32_t because it costs 4 bytes in mysql.innodb_ddl_log. More...
 

Functions

void ddl_log_close ()
 Close the DDL log system. More...
 
void ddl_log_crash_reset (THD *thd, SYS_VAR *var, void *var_ptr, const void *save)
 Reset all crash injection counters. More...
 

Variables

Log_DDLlog_ddl
 Object to handle Log_DDL. More...
 
bool innodb_ddl_log_crash_reset_debug
 Used by SET GLOBAL innodb_ddl_log_crash_counter_reset_debug = 1;. More...
 

Detailed Description

DDL log.

Created 12/1/2016 Shaohua Wang

Typedef Documentation

◆ DDL_Records

using DDL_Records = std::vector<DDL_Record *>

Array of DDL records.

Enumeration Type Documentation

◆ Log_Type

enum Log_Type : uint32_t
strong

DDL log types defined as uint32_t because it costs 4 bytes in mysql.innodb_ddl_log.

Enumerator
SMALLEST_LOG 

Smallest log type.

FREE_TREE_LOG 

Drop an index tree.

DELETE_SPACE_LOG 

Delete a file.

RENAME_SPACE_LOG 

Rename a file.

DROP_LOG 

Drop the entry in innodb_table_metadata.

RENAME_TABLE_LOG 

Rename table in dict cache.

REMOVE_CACHE_LOG 

Remove a table from dict cache.

ALTER_ENCRYPT_TABLESPACE_LOG 

Alter Encrypt a tablespace.

BIGGEST_LOG 

Biggest log type.

Function Documentation

◆ ddl_log_close()

void ddl_log_close ( )
inline

Close the DDL log system.

◆ ddl_log_crash_reset()

void ddl_log_crash_reset ( THD thd,
SYS_VAR var,
void *  var_ptr,
const void *  save 
)

Reset all crash injection counters.

It's used by: SET GLOBAL innodb_ddl_log_crash_reset_debug = 1 (0).

Parameters
[in]thdthread handle
[in]varpointer to system variable
[in]var_ptrwhere the formal string goes
[in]saveimmediate result from check function

Variable Documentation

◆ innodb_ddl_log_crash_reset_debug

bool innodb_ddl_log_crash_reset_debug

Used by SET GLOBAL innodb_ddl_log_crash_counter_reset_debug = 1;.

◆ log_ddl

Log_DDL* log_ddl

Object to handle Log_DDL.