diff options
Diffstat (limited to 'storage/innobase/handler/ha_innodb.cc')
| -rw-r--r-- | storage/innobase/handler/ha_innodb.cc | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/storage/innobase/handler/ha_innodb.cc b/storage/innobase/handler/ha_innodb.cc index 59ebc411db0..f94c564c8b3 100644 --- a/storage/innobase/handler/ha_innodb.cc +++ b/storage/innobase/handler/ha_innodb.cc @@ -13938,6 +13938,37 @@ ha_innobase::get_auto_increment( ulonglong col_max_value = innobase_get_int_col_max_value( table->next_number_field); + /** The following logic is needed to avoid duplicate key error + for autoincrement column. + + (1) InnoDB gives the current autoincrement value with respect + to increment and offset value. + + (2) Basically it does compute_next_insert_id() logic inside InnoDB + to avoid the current auto increment value changed by handler layer. + + (3) It is restricted only for insert operations. */ + + if (increment > 1 && thd_sql_command(user_thd) != SQLCOM_ALTER_TABLE + && autoinc < col_max_value) { + + ulonglong prev_auto_inc = autoinc; + + autoinc = ((autoinc - 1) + increment - offset)/ increment; + + autoinc = autoinc * increment + offset; + + /* If autoinc exceeds the col_max_value then reset + to old autoinc value. Because in case of non-strict + sql mode, boundary value is not considered as error. */ + + if (autoinc >= col_max_value) { + autoinc = prev_auto_inc; + } + + ut_ad(autoinc > 0); + } + /* Called for the first time ? */ if (trx->n_autoinc_rows == 0) { @@ -16462,6 +16493,12 @@ static MYSQL_SYSVAR_BOOL(use_fallocate, innobase_use_fallocate, "Preallocate files fast, using operating system functionality. On POSIX systems, posix_fallocate system call is used.", NULL, NULL, FALSE); +static MYSQL_SYSVAR_BOOL(stats_include_delete_marked, + srv_stats_include_delete_marked, + PLUGIN_VAR_OPCMDARG, + "Scan delete marked records for persistent stat", + NULL, NULL, FALSE); + static MYSQL_SYSVAR_ULONG(io_capacity, srv_io_capacity, PLUGIN_VAR_RQCMDARG, "Number of IOPs the server can do. Tunes the background IO rate", @@ -17293,6 +17330,7 @@ static struct st_mysql_sys_var* innobase_system_variables[]= { MYSQL_SYSVAR(doublewrite), MYSQL_SYSVAR(use_atomic_writes), MYSQL_SYSVAR(use_fallocate), + MYSQL_SYSVAR(stats_include_delete_marked), MYSQL_SYSVAR(api_enable_binlog), MYSQL_SYSVAR(api_enable_mdl), MYSQL_SYSVAR(api_disable_rowlock), |