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Commit 5c4f83bb authored by ingo@mysql.com's avatar ingo@mysql.com
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Merge mysql.com:/home/mydev/mysql-4.1 

into mysql.com:/home/mydev/mysql-4.1-wl1687
parents df8e3eac 784c9526
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Showing with 526 additions and 58 deletions
heap/heapdef.h
View file @ 5c4f83bb
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
/* Copyright (C) 2000,2004 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -97,6 +97,7 @@ extern uint hp_rb_null_key_length(HP_KEYDEF *keydef, const byte *key);
extern my_bool hp_if_null_in_key(HP_KEYDEF *keyinfo, const byte *record);
extern int hp_close(register HP_INFO *info);
extern void hp_clear(HP_SHARE *info);
extern void hp_clear_keys(HP_SHARE *info);
extern uint hp_rb_pack_key(HP_KEYDEF *keydef, uchar *key, const uchar *old,
uint k_len);
#ifdef THREAD
......
heap/hp_clear.c
View file @ 5c4f83bb
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
/* Copyright (C) 2000,2004 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -29,13 +29,60 @@ void heap_clear(HP_INFO *info)
void hp_clear(HP_SHARE *info)
{
uint key;
DBUG_ENTER("hp_clear");
if (info->block.levels)
VOID(hp_free_level(&info->block,info->block.levels,info->block.root,
(byte*) 0));
info->block.levels=0;
hp_clear_keys(info);
info->records=info->deleted=info->data_length=0;
info->blength=1;
info->changed=0;
info->del_link=0;
DBUG_VOID_RETURN;
}
/*
Clear all keys.
SYNOPSIS
heap_clear_keys()
info A pointer to the heap storage engine HP_INFO struct.
DESCRIPTION
Delete all trees of all indexes and leave them empty.
RETURN
void
*/
void heap_clear_keys(HP_INFO *info)
{
hp_clear(info->s);
}
/*
Clear all keys.
SYNOPSIS
hp_clear_keys()
info A pointer to the heap storage engine HP_SHARE struct.
DESCRIPTION
Delete all trees of all indexes and leave them empty.
RETURN
void
*/
void hp_clear_keys(HP_SHARE *info)
{
uint key;
DBUG_ENTER("hp_clear_keys");
for (key=0 ; key < info->keys ; key++)
{
HP_KEYDEF *keyinfo = info->keydef + key;
......@@ -52,9 +99,95 @@ void hp_clear(HP_SHARE *info)
block->last_allocated=0;
}
}
info->records=info->deleted=info->data_length=info->index_length=0;
info->blength=1;
info->changed=0;
info->del_link=0;
info->index_length=0;
DBUG_VOID_RETURN;
}
/*
Disable all indexes.
SYNOPSIS
heap_disable_indexes()
info A pointer to the heap storage engine HP_INFO struct.
DESCRIPTION
Disable and clear (remove contents of) all indexes.
RETURN
0 ok
*/
int heap_disable_indexes(HP_INFO *info)
{
HP_SHARE *share= info->s;
if (share->keys)
{
hp_clear_keys(share);
share->currently_disabled_keys= share->keys;
share->keys= 0;
}
return 0;
}
/*
Enable all indexes
SYNOPSIS
heap_enable_indexes()
info A pointer to the heap storage engine HP_INFO struct.
DESCRIPTION
Enable all indexes. The indexes might have been disabled
by heap_disable_index() before.
The function works only if both data and indexes are empty,
since the heap storage engine cannot repair the indexes.
To be sure, call handler::delete_all_rows() before.
RETURN
0 ok
HA_ERR_CRASHED data or index is non-empty.
*/
int heap_enable_indexes(HP_INFO *info)
{
int error= 0;
HP_SHARE *share= info->s;
if (share->data_length || share->index_length)
error= HA_ERR_CRASHED;
else
if (share->currently_disabled_keys)
{
share->keys= share->currently_disabled_keys;
share->currently_disabled_keys= 0;
}
return error;
}
/*
Test if indexes are disabled.
SYNOPSIS
heap_indexes_are_disabled()
info A pointer to the heap storage engine HP_INFO struct.
DESCRIPTION
Test if indexes are disabled.
RETURN
0 indexes are not disabled
1 all indexes are disabled
[2 non-unique indexes are disabled - NOT YET IMPLEMENTED]
*/
int heap_indexes_are_disabled(HP_INFO *info)
{
HP_SHARE *share= info->s;
return (! share->keys && share->currently_disabled_keys);
}
include/heap.h
View file @ 5c4f83bb
/* Copyright (C) 2000 MySQL AB
/* Copyright (C) 2000,2004 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -107,6 +107,7 @@ typedef struct st_heap_share
uint reclength; /* Length of one record */
uint changed;
uint keys,max_key_length;
uint currently_disabled_keys; /* saved value from "keys" when disabled */
uint open_count;
byte *del_link; /* Link to next block with del. rec */
my_string name; /* Name of "memory-file" */
......@@ -176,6 +177,10 @@ extern int heap_rprev(HP_INFO *info,byte *record);
extern int heap_rfirst(HP_INFO *info,byte *record,int inx);
extern int heap_rlast(HP_INFO *info,byte *record,int inx);
extern void heap_clear(HP_INFO *info);
extern void heap_clear_keys(HP_INFO *info);
extern int heap_disable_indexes(HP_INFO *info);
extern int heap_enable_indexes(HP_INFO *info);
extern int heap_indexes_are_disabled(HP_INFO *info);
extern void heap_update_auto_increment(HP_INFO *info, const byte *record);
ha_rows hp_rb_records_in_range(HP_INFO *info, int inx, const byte *start_key,
uint start_key_len,
......
myisam/mi_open.c
View file @ 5c4f83bb
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
/* Copyright (C) 2000,2004 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -1151,3 +1151,84 @@ int mi_open_keyfile(MYISAM_SHARE *share)
return 1;
return 0;
}
/*
Disable all indexes.
SYNOPSIS
mi_disable_indexes()
info A pointer to the MyISAM storage engine MI_INFO struct.
DESCRIPTION
Disable all indexes.
RETURN
0 ok
*/
int mi_disable_indexes(MI_INFO *info)
{
MYISAM_SHARE *share= info->s;
share->state.key_map= 0;
return 0;
}
/*
Enable all indexes
SYNOPSIS
mi_enable_indexes()
info A pointer to the MyISAM storage engine MI_INFO struct.
DESCRIPTION
Enable all indexes. The indexes might have been disabled
by mi_disable_index() before.
The function works only if both data and indexes are empty,
otherwise a repair is required.
To be sure, call handler::delete_all_rows() before.
RETURN
0 ok
HA_ERR_CRASHED data or index is non-empty.
*/
int mi_enable_indexes(MI_INFO *info)
{
int error= 0;
MYISAM_SHARE *share= info->s;
if (share->state.state.data_file_length ||
(share->state.state.key_file_length != share->base.keystart))
error= HA_ERR_CRASHED;
else
share->state.key_map= ((ulonglong) 1L << share->base.keys) - 1;
return error;
}
/*
Test if indexes are disabled.
SYNOPSIS
mi_indexes_are_disabled()
info A pointer to the MyISAM storage engine MI_INFO struct.
DESCRIPTION
Test if indexes are disabled.
RETURN
0 indexes are not disabled
1 all indexes are disabled
[2 non-unique indexes are disabled - NOT YET IMPLEMENTED]
*/
int mi_indexes_are_disabled(MI_INFO *info)
{
MYISAM_SHARE *share= info->s;
return (! share->state.key_map && share->base.keys);
}
myisam/myisamdef.h
View file @ 5c4f83bb
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
/* Copyright (C) 2000,2004 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -684,6 +684,9 @@ uint mi_uniquedef_write(File file, MI_UNIQUEDEF *keydef);
char *mi_uniquedef_read(char *ptr, MI_UNIQUEDEF *keydef);
uint mi_recinfo_write(File file, MI_COLUMNDEF *recinfo);
char *mi_recinfo_read(char *ptr, MI_COLUMNDEF *recinfo);
extern int mi_disable_indexes(MI_INFO *info);
extern int mi_enable_indexes(MI_INFO *info);
extern int mi_indexes_are_disabled(MI_INFO *info);
ulong _my_calc_total_blob_length(MI_INFO *info, const byte *record);
ha_checksum mi_checksum(MI_INFO *info, const byte *buf);
ha_checksum mi_static_checksum(MI_INFO *info, const byte *buf);
......
sql/ha_heap.cc
View file @ 5c4f83bb
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
/* Copyright (C) 2000,2004 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -47,12 +47,7 @@ int ha_heap::open(const char *name, int mode, uint test_if_locked)
if (file)
{
/* Initialize variables for the opened table */
btree_keys.clear_all();
for (uint i= 0 ; i < table->keys ; i++)
{
if (table->key_info[i].algorithm == HA_KEY_ALG_BTREE)
btree_keys.set_bit(i);
}
set_keys_for_scanning();
}
return (file ? 0 : 1);
}
......@@ -62,6 +57,33 @@ int ha_heap::close(void)
return heap_close(file);
}
/*
Compute which keys to use for scanning
SYNOPSIS
set_keys_for_scanning()
no parameter
DESCRIPTION
Set the bitmap btree_keys, which is used when the upper layers ask
which keys to use for scanning. For each btree index the
corresponding bit is set.
RETURN
void
*/
void ha_heap::set_keys_for_scanning(void)
{
btree_keys.clear_all();
for (uint i= 0 ; i < table->keys ; i++)
{
if (table->key_info[i].algorithm == HA_KEY_ALG_BTREE)
btree_keys.set_bit(i);
}
}
int ha_heap::write_row(byte * buf)
{
statistic_increment(ha_write_count,&LOCK_status);
......@@ -207,6 +229,114 @@ int ha_heap::external_lock(THD *thd, int lock_type)
return 0; // No external locking
}
/*
Disable indexes.
SYNOPSIS
disable_indexes()
mode mode of operation:
HA_KEY_SWITCH_NONUNIQ disable all non-unique keys
HA_KEY_SWITCH_ALL disable all keys
HA_KEY_SWITCH_NONUNIQ_SAVE dis. non-uni. and make persistent
HA_KEY_SWITCH_ALL_SAVE dis. all keys and make persistent
DESCRIPTION
Disable indexes and clear keys to use for scanning.
IMPLEMENTATION
HA_KEY_SWITCH_NONUNIQ is not implemented.
HA_KEY_SWITCH_NONUNIQ_SAVE is not implemented with HEAP.
HA_KEY_SWITCH_ALL_SAVE is not implemented with HEAP.
RETURN
0 ok
HA_ERR_WRONG_COMMAND mode not implemented.
*/
int ha_heap::disable_indexes(uint mode)
{
int error;
if (mode == HA_KEY_SWITCH_ALL)
{
if (!(error= heap_disable_indexes(file)))
set_keys_for_scanning();
}
else
{
/* mode not implemented */
error= HA_ERR_WRONG_COMMAND;
}
return error;
}
/*
Enable indexes.
SYNOPSIS
enable_indexes()
mode mode of operation:
HA_KEY_SWITCH_NONUNIQ enable all non-unique keys
HA_KEY_SWITCH_ALL enable all keys
HA_KEY_SWITCH_NONUNIQ_SAVE en. non-uni. and make persistent
HA_KEY_SWITCH_ALL_SAVE en. all keys and make persistent
DESCRIPTION
Enable indexes and set keys to use for scanning.
The indexes might have been disabled by disable_index() before.
The function works only if both data and indexes are empty,
since the heap storage engine cannot repair the indexes.
To be sure, call handler::delete_all_rows() before.
IMPLEMENTATION
HA_KEY_SWITCH_NONUNIQ is not implemented.
HA_KEY_SWITCH_NONUNIQ_SAVE is not implemented with HEAP.
HA_KEY_SWITCH_ALL_SAVE is not implemented with HEAP.
RETURN
0 ok
HA_ERR_CRASHED data or index is non-empty. Delete all rows and retry.
HA_ERR_WRONG_COMMAND mode not implemented.
*/
int ha_heap::enable_indexes(uint mode)
{
int error;
if (mode == HA_KEY_SWITCH_ALL)
{
if (!(error= heap_enable_indexes(file)))
set_keys_for_scanning();
}
else
{
/* mode not implemented */
error= HA_ERR_WRONG_COMMAND;
}
return error;
}
/*
Test if indexes are disabled.
SYNOPSIS
indexes_are_disabled()
no parameters
RETURN
0 indexes are not disabled
1 all indexes are disabled
[2 non-unique indexes are disabled - NOT YET IMPLEMENTED]
*/
int ha_heap::indexes_are_disabled(void)
{
return heap_indexes_are_disabled(file);
}
THR_LOCK_DATA **ha_heap::store_lock(THD *thd,
THR_LOCK_DATA **to,
enum thr_lock_type lock_type)
......
sql/ha_heap.h
View file @ 5c4f83bb
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
/* Copyright (C) 2000,2004 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -61,6 +61,7 @@ class ha_heap: public handler
int open(const char *name, int mode, uint test_if_locked);
int close(void);
void set_keys_for_scanning(void);
int write_row(byte * buf);
int update_row(const byte * old_data, byte * new_data);
int delete_row(const byte * buf);
......@@ -82,6 +83,9 @@ class ha_heap: public handler
int extra(enum ha_extra_function operation);
int external_lock(THD *thd, int lock_type);
int delete_all_rows(void);
int disable_indexes(uint mode);
int enable_indexes(uint mode);
int indexes_are_disabled(void);
ha_rows records_in_range(int inx, const byte *start_key,uint start_key_len,
enum ha_rkey_function start_search_flag,
const byte *end_key,uint end_key_len,
......
sql/ha_myisam.cc
View file @ 5c4f83bb
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
/* Copyright (C) 2000,2004 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -810,30 +810,100 @@ int ha_myisam::preload_keys(THD* thd, HA_CHECK_OPT *check_opt)
}
}
/*
disable indexes, making it persistent if requested
Disable indexes, making it persistent if requested.
SYNOPSIS
disable_indexes(all, save)
all disable all indexes
if not set only non-unique indexes will be disabled
[all=1 is NOT IMPLEMENTED YET]
save save the disabled state, so that it will persist
between queries/threads/reboots
[save=0 is NOT IMPLEMENTED YET]
disable_indexes()
mode mode of operation:
HA_KEY_SWITCH_NONUNIQ disable all non-unique keys
HA_KEY_SWITCH_ALL disable all keys
HA_KEY_SWITCH_NONUNIQ_SAVE dis. non-uni. and make persistent
HA_KEY_SWITCH_ALL_SAVE dis. all keys and make persistent
IMPLEMENTATION
HA_KEY_SWITCH_NONUNIQ is not implemented.
HA_KEY_SWITCH_ALL_SAVE is not implemented.
RETURN
0 ok
HA_ERR_WRONG_COMMAND mode not implemented.
*/
int ha_myisam::disable_indexes(bool all, bool save)
int ha_myisam::disable_indexes(uint mode)
{
int error;
if (mode == HA_KEY_SWITCH_ALL)
{
/* call a storage engine function to switch the key map */
error= mi_disable_indexes(file);
}
else if (mode == HA_KEY_SWITCH_NONUNIQ_SAVE)
{
mi_extra(file, HA_EXTRA_NO_KEYS, 0);
info(HA_STATUS_CONST); // Read new key info
return 0;
error= 0;
}
else
{
/* mode not implemented */
error= HA_ERR_WRONG_COMMAND;
}
return error;
}
int ha_myisam::enable_indexes()
/*
Enable indexes, making it persistent if requested.
SYNOPSIS
enable_indexes()
mode mode of operation:
HA_KEY_SWITCH_NONUNIQ enable all non-unique keys
HA_KEY_SWITCH_ALL enable all keys
HA_KEY_SWITCH_NONUNIQ_SAVE en. non-uni. and make persistent
HA_KEY_SWITCH_ALL_SAVE en. all keys and make persistent
DESCRIPTION
Enable indexes, which might have been disabled by disable_index() before.
The modes without _SAVE work only if both data and indexes are empty,
since the MyISAM repair would enable them persistently.
To be sure in these cases, call handler::delete_all_rows() before.
IMPLEMENTATION
HA_KEY_SWITCH_NONUNIQ is not implemented.
HA_KEY_SWITCH_ALL_SAVE is not implemented.
RETURN
0 ok
!=0 Error, among others:
HA_ERR_CRASHED data or index is non-empty. Delete all rows and retry.
HA_ERR_WRONG_COMMAND mode not implemented.
*/
int ha_myisam::enable_indexes(uint mode)
{
int error;
if (file->s->state.key_map == set_bits(ulonglong, file->s->base.keys))
{
/* All indexes are enabled already. */
return 0;
}
int error=0;
if (mode == HA_KEY_SWITCH_ALL)
{
error= mi_enable_indexes(file);
/*
Do not try to repair on error,
as this could make the enabled state persistent,
but mode==HA_KEY_SWITCH_ALL forbids it.
*/
}
else if (mode == HA_KEY_SWITCH_NONUNIQ_SAVE)
{
THD *thd=current_thd;
MI_CHECK param;
const char *save_proc_info=thd->proc_info;
......@@ -848,9 +918,38 @@ int ha_myisam::enable_indexes()
error=repair(thd,param,0) != HA_ADMIN_OK;
info(HA_STATUS_CONST);
thd->proc_info=save_proc_info;
}
else
{
/* mode not implemented */
error= HA_ERR_WRONG_COMMAND;
}
return error;
}
/*
Test if indexes are disabled.
SYNOPSIS
indexes_are_disabled()
no parameters
RETURN
0 indexes are not disabled
1 all indexes are disabled
[2 non-unique indexes are disabled - NOT YET IMPLEMENTED]
*/
int ha_myisam::indexes_are_disabled(void)
{
return mi_indexes_are_disabled(file);
}
/*
prepare for a many-rows insert operation
e.g. - disable indexes (if they can be recreated fast) or
......@@ -898,7 +997,8 @@ int ha_myisam::end_bulk_insert()
{
mi_end_bulk_insert(file);
int err=mi_extra(file, HA_EXTRA_NO_CACHE, 0);
return err ? err : can_enable_indexes ? enable_indexes() : 0;
return err ? err : can_enable_indexes ?
enable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE) : 0;
}
......
sql/ha_myisam.h
View file @ 5c4f83bb
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
/* Copyright (C) 2000,2004 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -105,8 +105,9 @@ class ha_myisam: public handler
int extra_opt(enum ha_extra_function operation, ulong cache_size);
int external_lock(THD *thd, int lock_type);
int delete_all_rows(void);
int disable_indexes(bool all, bool save);
int enable_indexes();
int disable_indexes(uint mode);
int enable_indexes(uint mode);
int indexes_are_disabled(void);
void start_bulk_insert(ha_rows rows);
int end_bulk_insert();
ha_rows records_in_range(int inx,
......
sql/handler.h
View file @ 5c4f83bb
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
/* Copyright (C) 2000,2004 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -91,6 +91,13 @@
#define HA_KEY_READ_ONLY 64 /* Support HA_EXTRA_KEYREAD */
/* operations for disable/enable indexes */
#define HA_KEY_SWITCH_NONUNIQ 0
#define HA_KEY_SWITCH_ALL 1
#define HA_KEY_SWITCH_NONUNIQ_SAVE 2
#define HA_KEY_SWITCH_ALL_SAVE 3
/*
Bits in index_ddl_flags(KEY *wanted_index)
for what ddl you can do with index
......@@ -373,8 +380,9 @@ public:
*/
virtual int restore(THD* thd, HA_CHECK_OPT* check_opt);
virtual int dump(THD* thd, int fd = -1) { return ER_DUMP_NOT_IMPLEMENTED; }
virtual int disable_indexes(bool all, bool save) { return HA_ERR_WRONG_COMMAND; }
virtual int enable_indexes() { return HA_ERR_WRONG_COMMAND; }
virtual int disable_indexes(uint mode) { return HA_ERR_WRONG_COMMAND; }
virtual int enable_indexes(uint mode) { return HA_ERR_WRONG_COMMAND; }
virtual int indexes_are_disabled(void) {return 0;}
virtual void start_bulk_insert(ha_rows rows) {}
virtual int end_bulk_insert() {return 0; }
virtual int discard_or_import_tablespace(my_bool discard) {return -1;}
......
sql/sql_select.cc
View file @ 5c4f83bb
/* Copyright (C) 2000-2003 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
/* Copyright (C) 2000-2004 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -5549,6 +5549,8 @@ bool create_myisam_from_heap(THD *thd, TABLE *table, TMP_TABLE_PARAM *param,
goto err2;
if (open_tmp_table(&new_table))
goto err1;
if (table->file->indexes_are_disabled())
new_table.file->disable_indexes(HA_KEY_SWITCH_ALL);
table->file->index_end();
table->file->rnd_init();
if (table->no_rows)
......
sql/sql_table.cc
View file @ 5c4f83bb
/* Copyright (C) 2000-2003 MySQL AB
/* Copyright (C) 2000-2004 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
......@@ -2556,14 +2556,14 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
VOID(pthread_mutex_lock(&LOCK_open));
wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN);
VOID(pthread_mutex_unlock(&LOCK_open));
error= table->file->enable_indexes();
error= table->file->enable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE);
/* COND_refresh will be signaled in close_thread_tables() */
break;
case DISABLE:
VOID(pthread_mutex_lock(&LOCK_open));
wait_while_table_is_used(thd, table, HA_EXTRA_FORCE_REOPEN);
VOID(pthread_mutex_unlock(&LOCK_open));
error=table->file->disable_indexes(0, 1);
error=table->file->disable_indexes(HA_KEY_SWITCH_NONUNIQ_SAVE);
/* COND_refresh will be signaled in close_thread_tables() */
break;
}
......
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