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6aa9a552c2
There are a few different cases to consider
Logging of CREATE TABLE and CREATE TABLE ... LIKE
- If REPLACE is used and there was an existing table, DDL log the drop of
the table.
- If discovery of table is to be done
- DDL LOG create table
else
- DDL log create table (with engine type)
- create the table
- If table was created
- Log entry to binary log with xid
- Mark DDL log completed
Crash recovery:
- If query was in binary log do nothing and exit
- If discoverted table
- Delete the .frm file
-else
- Drop created table and frm file
- If table was dropped, write a DROP TABLE statement in binary log
CREATE TABLE ... SELECT required a little more work as when one is using
statement logging the query is written to the binary log before commit is
done.
This was fixed by adding a DROP TABLE to the binary log during crash
recovery if the ddl log entry was not closed. In this case the binary log
will contain:
CREATE TABLE xxx ... SELECT ....
DROP TABLE xxx;
Other things:
- Added debug_crash_here() functionality to Aria to be able to test
crash in create table between the creation of the .MAI and the .MAD files.
157 lines
6 KiB
C
157 lines
6 KiB
C
/* Copyright (C) 2006 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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Copyright (c) 2010, 2020, MariaDB Corporation Ab
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
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/*
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Static variables for MARIA library. All definied here for easy making of
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a shared library
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*/
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#ifndef MY_GLOBAL_INCLUDED
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#include "maria_def.h"
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#include "trnman.h"
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#endif
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LIST *maria_open_list=0;
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uchar maria_file_magic[]=
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{ (uchar) 254, (uchar) 254, (uchar) 9, '\003', };
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uchar maria_pack_file_magic[]=
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{ (uchar) 254, (uchar) 254, (uchar) 10, '\001', };
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/* Unique number for this maria instance */
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uchar maria_uuid[MY_UUID_SIZE];
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uint maria_quick_table_bits=9;
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ulong __attribute__((visibility("default"))) maria_block_size= MARIA_KEY_BLOCK_LENGTH;
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my_bool maria_flush= 0, maria_single_user= 0;
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my_bool maria_delay_key_write= 0, maria_page_checksums= 1;
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my_bool maria_inited= FALSE;
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my_bool maria_in_ha_maria= FALSE; /* If used from ha_maria or not */
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my_bool maria_recovery_changed_data= 0, maria_recovery_verbose= 0;
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my_bool maria_assert_if_crashed_table= 0;
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my_bool maria_checkpoint_disabled= 0;
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my_bool maria_encrypt_tables= 0;
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my_bool aria_readonly= 0;
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mysql_mutex_t THR_LOCK_maria;
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#ifdef DONT_USE_RW_LOCKS
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ulong maria_concurrent_insert= 0;
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#else
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/* Do concurrent inserts at file end or in old holes */
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ulong maria_concurrent_insert= 2;
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#endif
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my_off_t maria_max_temp_length= MAX_FILE_SIZE;
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ulong maria_bulk_insert_tree_size=8192*1024;
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ulong maria_data_pointer_size= 6;
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PAGECACHE maria_pagecache_var;
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PAGECACHE *maria_pagecache= &maria_pagecache_var;
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PAGECACHE maria_log_pagecache_var;
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PAGECACHE *maria_log_pagecache= &maria_log_pagecache_var;
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MY_TMPDIR *maria_tmpdir; /* Tempdir for redo */
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const char *maria_data_root;
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HASH maria_stored_state;
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int (*maria_create_trn_hook)(MARIA_HA *);
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void dummy_crash(const char *keyword __attribute__((unused))) {}
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void (*ma_debug_crash_here)(const char *keyword)= dummy_crash;
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/**
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@brief when transactionality does not matter we can use this transaction
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Used in external programs like ma_test*, and also internally inside
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libmaria when there is no transaction around and the operation isn't
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transactional (CREATE/DROP/RENAME/OPTIMIZE/REPAIR).
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*/
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TRN dummy_transaction_object;
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/* a WT_RESOURCE_TYPE for transactions waiting on a unique key conflict */
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WT_RESOURCE_TYPE ma_rc_dup_unique={ wt_resource_id_memcmp, 0};
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/* Enough for comparing if number is zero */
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uchar maria_zero_string[]= {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
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/*
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read_vec[] is used for converting between P_READ_KEY.. and SEARCH_
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Position is , == , >= , <= , > , <
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*/
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uint32 maria_read_vec[]=
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{
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SEARCH_FIND, /* HA_READ_KEY_EXACT */
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SEARCH_FIND | SEARCH_BIGGER, /* HA_READ_KEY_OR_NEXT */
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SEARCH_FIND | SEARCH_SMALLER, /* HA_READ_KEY_OR_PREV */
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SEARCH_NO_FIND | SEARCH_BIGGER, /* HA_READ_AFTER_KEY */
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SEARCH_NO_FIND | SEARCH_SMALLER, /* HA_READ_BEFORE_KEY */
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SEARCH_FIND | SEARCH_PART_KEY, /* HA_READ_PREFIX */
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SEARCH_LAST, /* HA_READ_PREFIX_LAST */
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SEARCH_LAST | SEARCH_SMALLER, /* HA_READ_PREFIX_LAST_OR_PREV */
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MBR_CONTAIN, /* HA_READ_MBR_CONTAIN */
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MBR_INTERSECT, /* HA_READ_MBR_INTERSECT */
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MBR_WITHIN, /* HA_READ_MBR_WITHIN */
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MBR_DISJOINT, /* HA_READ_MBR_DISJOINT */
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MBR_EQUAL /* HA_READ_MBR_EQUAL */
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};
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uint32 maria_readnext_vec[]=
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{
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SEARCH_BIGGER, SEARCH_BIGGER, SEARCH_SMALLER, SEARCH_BIGGER, SEARCH_SMALLER,
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SEARCH_BIGGER, SEARCH_SMALLER, SEARCH_SMALLER
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};
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my_bool (*ma_killed)(MARIA_HA *)= ma_killed_standalone;
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#ifdef HAVE_PSI_INTERFACE
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PSI_mutex_key key_SHARE_BITMAP_lock, key_SORT_INFO_mutex,
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key_THR_LOCK_maria, key_TRANSLOG_BUFFER_mutex,
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key_LOCK_soft_sync,
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key_TRANSLOG_DESCRIPTOR_dirty_buffer_mask_lock,
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key_TRANSLOG_DESCRIPTOR_sent_to_disk_lock,
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key_TRANSLOG_DESCRIPTOR_log_flush_lock,
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key_TRANSLOG_DESCRIPTOR_file_header_lock,
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key_TRANSLOG_DESCRIPTOR_unfinished_files_lock,
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key_TRANSLOG_DESCRIPTOR_purger_lock,
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key_SHARE_intern_lock, key_SHARE_key_del_lock,
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key_SHARE_close_lock, key_PAGECACHE_cache_lock,
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key_SERVICE_THREAD_CONTROL_lock,
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key_LOCK_trn_list, key_TRN_state_lock;
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PSI_cond_key key_SHARE_key_del_cond, key_SERVICE_THREAD_CONTROL_cond,
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key_SORT_INFO_cond, key_SHARE_BITMAP_cond,
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key_COND_soft_sync, key_TRANSLOG_BUFFER_waiting_filling_buffer,
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key_TRANSLOG_BUFFER_prev_sent_to_disk_cond,
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key_TRANSLOG_DESCRIPTOR_log_flush_cond,
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key_TRANSLOG_DESCRIPTOR_new_goal_cond;
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PSI_rwlock_key key_KEYINFO_root_lock, key_SHARE_mmap_lock,
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key_TRANSLOG_DESCRIPTOR_open_files_lock;
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PSI_thread_key key_thread_checkpoint, key_thread_find_all_keys,
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key_thread_soft_sync;
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PSI_file_key key_file_translog, key_file_kfile, key_file_dfile,
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key_file_control, key_file_tmp;
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#endif /* HAVE_PSI_INTERFACE */
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/* Note that PSI_stage_info globals must always be declared. */
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PSI_stage_info stage_waiting_for_a_resource= { 0, "Waiting for a resource", 0};
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#ifdef WITH_S3_STORAGE_ENGINE
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#include "s3_func.h"
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struct s3_func __attribute__((visibility("default"))) s3f;
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#endif
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