Fixes for Aria storage engine:

- Fixed bug lp:624099 ma_close.c:75: maria_close: Assertion `share->in_trans == 0' failed on UNLOCK TABLES
- Fixed bug that caused table to be marked as not closed (crashed) during recovery testing.
- Use maria_delete_table_files() instead of maria_delete_table() to delete tempoary tables (faster and safer)
- Added checks to ensure that bitmap and internal mutex are always taken in right order.
- For transactional tables, only mark the table as changed before page for table is to be written to disk (and thus the log is flushed).
  This speeds up things a bit and fixes a problem where open_count was incremented on disk but there was no log entry to fix it during recovery -> table was crashed.
- Fixed a bug in repair() where table was not automaticly repaired.
- Ensure that state->global_changed, share->changed and share->state.open_count are set and reset properly.
- Added option --ignore-control-file to maria_chk to be able to run maria_chk even if the control file is locked.


mysql-test/suite/maria/r/maria-recover.result:
  Test result changed as we now force checkpoint before copying table, which results in pagecache getting flushed and we have more rows to recover.
mysql-test/suite/maria/r/maria.result:
  Added new tests
mysql-test/suite/maria/t/maria-recover.test:
  Force checkpoint before copying table.
  This is needed as now the open-count is increased first when first page is flushed.
mysql-test/suite/maria/t/maria.test:
  Added tests to verify fix for lp:624099
storage/maria/ha_maria.cc:
  Use table->in_use instead of current_thd (trivial optimization)
  Use maria_delete_table_files() instead of maria_delete_table() to delete tempoary tables (faster and safer)
  More DBUG_ASSERT()
  Reset locked tables count after locked tables have been moved to new transaction. This fixed lp:624099
storage/maria/ma_bitmap.c:
  Temporarly unlock bitmap mutex when calling _ma_mark_file_changed() and pagecache_delete_pages() to ensure right mutex lock order.
  Call _ma_bitmap_unpin_all() when bitmap->non_flusable is set to 0. This fixed a case when bitmap was not proparly unpinned.
  More comments
  Added DBUG_ASSERT() for detecting wrong share->bitmap usage
storage/maria/ma_blockrec.c:
  More DBUG_ASSERT()
  Moved code around in _ma_apply_redo_insert_row_head_or_tail() to make things safer on error conditions.
storage/maria/ma_check.c:
  Changed parameter for _ma_set_uuid()
  Corrected test for detecting if we lost many rows. This fixed some cases where auto-recovery failed.
  share->changed need to be set if state.open_count is changed.
  Removed setting of share->changed= 0 as called function sets it.
storage/maria/ma_close.c:
  - Added code to properly decrement open_count and have it written by _ma_state_info_write() for transactional tables.
    (This is more correct and also saves us one extra write by _ma_decrement_open_count() at close.
  - Added DBUG_ASSERT() to detect if open_count is wrong at maria_close().
storage/maria/ma_delete.c:
  Updated argument to _ma_mark_file_changed()
storage/maria/ma_delete_all.c:
  Updated argument to _ma_mark_file_changed()
  For transactional tables, call _ma_mark_file_changed() after log entry has been written (to allow recover to fix open_count)
  Reset more needed variables in _ma_reset_status()
storage/maria/ma_delete_table.c:
  Moved deletion of Aria files to maria_delete_table_files().
  Remove RAID usage (old not working code)
storage/maria/ma_extra.c:
  Set share->changed=1 when state needs to be updated on disk.
  Don't reset share->changed after call to _ma_state_info_write() as this calls sets share->changed.
  Set share->state.open_count to 1 to force table to be auto repaired if drop fails.
  Set share->global_changed before call to _ma_flush_table_files() to ensure that we don't try to mark the table changed during flush.
  Added DBUG_ENTER
storage/maria/ma_locking.c:
  Split _ma_mark_file_changed() into two functions to delay marking transactional tables as changed on disk until first disk write.
  Added argument to _ma_decrement_open_count() to tell if we should call ma_lock_database() or not.
  Don't decrement open count for transactional tables during _ma_decrement_open_count(). This will be done during close.
  Changed parameter for _ma_set_uuid()
storage/maria/ma_open.c:
  Set share->open_count_not_zero_on_open if state.open_count is not zero.
  This is needed for DBUG_ASSERT() in maria_close() that is there to enforce that open_count is always 0 at close.
  This test doesn't however work for tables that had open_count != 0 already on disk (ie, crashed tables).
  Enforce right mutex order for share->intern_lock and share->bitmap.bitmap_lock
  Don't set share->changed to 0 if share->state.open_count != 0, as state needs to be be written at close
storage/maria/ma_pagecache.c:
  Moved a bit of code in find_block() to avoid one if.
  More DBUG_ASSERT()
  (I left a comment in the code for Sanja to look at;  The code probably works but we need to check if it's optimal)
storage/maria/ma_pagecrc.c:
  For transactional tables, just before first write to disk, but after log is flushed, mark the file changed.
  This fixes some cases where recovery() did not detect that table was marked as changed and could thus not recover the marker.
storage/maria/ma_recovery.c:
  Set share->changed when share->global_changed is set.
storage/maria/ma_update.c:
  Updated parameter for _ma_mark_file_changed()
storage/maria/ma_write.c:
  Updated parameter for _ma_mark_file_changed()
storage/maria/maria_chk.c:
  Added option --ignore-control-file to be able to run maria_chk even if the control file is locked.
storage/maria/maria_def.h:
  Updated function prototypes.
  Added open_count_not_zero_on_open to MARIA_SHARE.
storage/myisam/ha_myisam.cc:
  current_thd -> table->in_use

mysql-test/suite/maria/r/maria-recover.result

@@ -20,9 +20,11 @@ create table t1 (a varchar(1000), index(a)) engine=maria;
 insert into t1 values("ThursdayMorningsMarket");
 flush table t1;
 insert into t1 select concat(a,'b') from t1 limit 1;
+set global maria_checkpoint_interval=1000;
 select * from t_corrupted2;
 a
 ThursdayMorningsMarket
+ThursdayMorningsMarketb
 Warnings:
 Error	145	t_corrupted2' is marked as crashed and should be repaired
 Error	1194	t_corrupted2' is marked as crashed and should be repaired
@@ -31,5 +33,7 @@ Error	1034	Wrong base information on indexpage at page: 1
 select * from t_corrupted2;
 a
 ThursdayMorningsMarket
+ThursdayMorningsMarketb
 drop database mysqltest;
 set global maria_recover=backup;
+set global maria_checkpoint_interval=30;

mysql-test/suite/maria/r/maria.result

@@ -2640,3 +2640,29 @@ repair table t1 extended;
 Table	Op	Msg_type	Msg_text
 test.t1	repair	status	OK
 drop table t1;
+create table t1 (a int, b int, key (a), key(b));
+alter table t1 disable keys;
+insert into t1 values(1,1),(2,1),(3,1),(4,1),(5,1),(6,1),(7,1),(8,1),(9,1),(10,1),(11,1),(12,1),(13,1);
+alter table t1 enable keys;
+select count(*) from t1;
+count(*)
+13
+drop table t1;
+create table t1 (a int not null, b int, primary key (a), key(b));
+alter table t1 disable keys;
+insert into t1 values(1,1),(2,1),(3,1),(4,1),(5,1),(6,1),(7,1),(8,1),(9,1),(10,1),(11,1),(12,1),(13,1);
+alter table t1 enable keys;
+select count(*) from t1;
+count(*)
+13
+drop table t1;
+create table t1 (a int not null, b int, primary key (a), key(b));
+lock tables t1 write;
+alter table t1 disable keys;
+insert into t1 values(1,1),(2,1),(3,1),(4,1),(5,1),(6,1),(7,1),(8,1),(9,1),(10,1),(11,1),(12,1),(13,1);
+alter table t1 enable keys;
+unlock tables;
+select count(*) from t1;
+count(*)
+13
+drop table t1;

mysql-test/suite/maria/t/maria-recover.test

@@ -10,6 +10,8 @@ call mtr.add_suppression("Recovering table: '\\..mysqltest.t_corrupted2'");
 call mtr.add_suppression("Table '\\..mysqltest.t_corrupted2' is marked as crashed and should be repaired");
 call mtr.add_suppression("Table 't_corrupted2' is marked as crashed and should be repaired");
 
+let $def_checkinterval=`select @@global.maria_checkpoint_interval`;
+
 --enable_query_log
 
 # Note: we're setting an environment variable (not prefixing it by $),
@@ -36,6 +38,10 @@ insert into t1 values("ThursdayMorningsMarket");
 
 flush table t1; # put index page on disk
 insert into t1 select concat(a,'b') from t1 limit 1;
+# force a checkpoint to get the open count > 0
+set global maria_checkpoint_interval=1000;
+# Wait for checkpoint to happen
+--sleep 1
 # now t1 has its open_count>0 and so will t2_corrupted.
 # It is not named t2 because the corruption messages which will be put
 # in the error log need to be detected in mtr_process.pl, and we want
@@ -59,7 +65,6 @@ perl;
     syswrite (FILE, $whatever) or die;
     close FILE;
 EOF
-
 replace_regex /Table.*t_corrupted2/t_corrupted2/ ;
 --enable_prepare_warnings
 select * from t_corrupted2; # should show corruption and repair messages
@@ -68,3 +73,4 @@ select * from t_corrupted2; # should show just rows
 
 drop database mysqltest;
 set global maria_recover=backup;
+eval set global maria_checkpoint_interval=$def_checkinterval;

mysql-test/suite/maria/t/maria.test

@@ -1928,6 +1928,33 @@ check table t1;
 repair table t1 extended;
 drop table t1;
 
+#
+# Test problem with disable/enable keys
+#
+
+create table t1 (a int, b int, key (a), key(b));
+alter table t1 disable keys;
+insert into t1 values(1,1),(2,1),(3,1),(4,1),(5,1),(6,1),(7,1),(8,1),(9,1),(10,1),(11,1),(12,1),(13,1);
+alter table t1 enable keys;
+select count(*) from t1;
+drop table t1;
+
+create table t1 (a int not null, b int, primary key (a), key(b));
+alter table t1 disable keys;
+insert into t1 values(1,1),(2,1),(3,1),(4,1),(5,1),(6,1),(7,1),(8,1),(9,1),(10,1),(11,1),(12,1),(13,1);
+alter table t1 enable keys;
+select count(*) from t1;
+drop table t1;
+
+create table t1 (a int not null, b int, primary key (a), key(b));
+lock tables t1 write;
+alter table t1 disable keys;
+insert into t1 values(1,1),(2,1),(3,1),(4,1),(5,1),(6,1),(7,1),(8,1),(9,1),(10,1),(11,1),(12,1),(13,1);
+alter table t1 enable keys;
+unlock tables;
+select count(*) from t1;
+drop table t1;
+
 #
 # End of test
 #

storage/maria/ha_maria.cc

@@ -1568,7 +1568,7 @@ int ha_maria::repair(THD *thd, HA_CHECK *param, bool do_optimize)
                               llstr(rows, llbuff),
                               llstr(file->state->records, llbuff2));
       /* Abort if warning was converted to error */
-      if (current_thd->is_error())
+      if (table->in_use->is_error())
         error= 1;
     }
   }
@@ -1803,7 +1803,7 @@ int ha_maria::enable_indexes(uint mode)
   }
   else if (mode == HA_KEY_SWITCH_NONUNIQ_SAVE)
   {
-    THD *thd= current_thd;
+    THD *thd= table->in_use;
     HA_CHECK &param= *(HA_CHECK*) thd->alloc(sizeof(param));
     if (!&param)
       return HA_ADMIN_INTERNAL_ERROR;
@@ -1905,7 +1905,7 @@ int ha_maria::indexes_are_disabled(void)
 void ha_maria::start_bulk_insert(ha_rows rows)
 {
   DBUG_ENTER("ha_maria::start_bulk_insert");
-  THD *thd= current_thd;
+  THD *thd= table->in_use;
   ulong size= min(thd->variables.read_buff_size,
                   (ulong) (table->s->avg_row_length * rows));
   MARIA_SHARE *share= file->s;
@@ -2388,7 +2388,7 @@ int ha_maria::extra_opt(enum ha_extra_function operation, ulong cache_size)
 
 int ha_maria::delete_all_rows()
 {
-  THD *thd= current_thd;
+  THD *thd= table->in_use;
   (void) translog_log_debug_info(file->trn, LOGREC_DEBUG_INFO_QUERY,
                                  (uchar*) thd->query(), thd->query_length());
   if (file->s->now_transactional &&
@@ -2418,8 +2418,9 @@ int ha_maria::delete_table(const char *name)
 
 void ha_maria::drop_table(const char *name)
 {
+  DBUG_ASSERT(file->s->temporary);
   (void) close();
-  (void) maria_delete_table(name);
+  (void) maria_delete_table_files(name, 0);
 }
 
 
@@ -2514,6 +2515,7 @@ int ha_maria::external_lock(THD *thd, int lock_type)
       {
         DBUG_PRINT("info",
                    ("locked_tables: %u", trnman_has_locked_tables(trn)));
+        DBUG_ASSERT(trnman_has_locked_tables(trn) > 0);
         if (trnman_has_locked_tables(trn) &&
             !trnman_decrement_locked_tables(trn))
         {
@@ -2647,12 +2649,12 @@ int ha_maria::implicit_commit(THD *thd, bool new_trn)
       statement assuming they have a trn (see ha_maria::start_stmt()).
     */
     trn= trnman_new_trn(& thd->transaction.wt);
-    /* This is just a commit, tables stay locked if they were: */
-    trnman_reset_locked_tables(trn, locked_tables);
     THD_TRN= trn;
     if (unlikely(trn == NULL))
+    {
       error= HA_ERR_OUT_OF_MEM;
-
+      goto end;
+    }
     /*
       Move all locked tables to the new transaction
       We must do it here as otherwise file->thd and file->state may be
@@ -2677,6 +2679,8 @@ int ha_maria::implicit_commit(THD *thd, bool new_trn)
         }
       }
     }
+    /* This is just a commit, tables stay locked if they were: */
+    trnman_reset_locked_tables(trn, locked_tables);
   }
 end:
   DBUG_RETURN(error);
@@ -2813,7 +2817,7 @@ int ha_maria::create(const char *name, register TABLE *table_arg,
       ha_create_info->row_type != ROW_TYPE_PAGE &&
       ha_create_info->row_type != ROW_TYPE_NOT_USED &&
       ha_create_info->row_type != ROW_TYPE_DEFAULT)
-    push_warning(current_thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
+    push_warning(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
                  ER_ILLEGAL_HA_CREATE_OPTION,
                  "Row format set to PAGE because of TRANSACTIONAL=1 option");
 

storage/maria/ma_bitmap.c

@@ -144,6 +144,8 @@ static my_bool _ma_read_bitmap_page(MARIA_HA *info,
 static my_bool _ma_bitmap_create_missing(MARIA_HA *info,
                                          MARIA_FILE_BITMAP *bitmap,
                                          pgcache_page_no_t page);
+static void _ma_bitmap_unpin_all(MARIA_SHARE *share);
+
 
 /* Write bitmap page to key cache */
 
@@ -177,6 +179,15 @@ static inline my_bool write_changed_bitmap(MARIA_SHARE *share,
   }
   else
   {
+    /*
+      bitmap->non_flushable means that someone has changed the bitmap,
+      but it's not yet complete so it can't yet be written to disk.
+      In this case we write the changed bitmap to the disk cache,
+      but keep it pinned until the change is completed. The page will
+      be unpinned later by _ma_bitmap_unpin_all() as soon as non_flushable
+      is set back to 0.
+    */
+    DBUG_PRINT("info", ("Writing pinned bitmap page"));
     MARIA_PINNED_PAGE page_link;
     int res= pagecache_write(share->pagecache,
                              &bitmap->file, bitmap->page, 0,
@@ -275,8 +286,15 @@ my_bool _ma_bitmap_init(MARIA_SHARE *share, File file)
 
 my_bool _ma_bitmap_end(MARIA_SHARE *share)
 {
-  my_bool res= _ma_bitmap_flush(share);
+  my_bool res;
   safe_mutex_assert_owner(&share->close_lock);
+  DBUG_ASSERT(share->bitmap.non_flushable == 0);
+  DBUG_ASSERT(share->bitmap.flush_all_requested == 0);
+  DBUG_ASSERT(share->bitmap.waiting_for_non_flushable == 0 &&
+              share->bitmap.waiting_for_flush_all_requested == 0);
+  DBUG_ASSERT(share->bitmap.pinned_pages.elements == 0);
+
+  res= _ma_bitmap_flush(share);
   pthread_mutex_destroy(&share->bitmap.bitmap_lock);
   pthread_cond_destroy(&share->bitmap.bitmap_cond);
   delete_dynamic(&share->bitmap.pinned_pages);
@@ -388,6 +406,30 @@ my_bool _ma_bitmap_flush_all(MARIA_SHARE *share)
 #endif
 
   pthread_mutex_lock(&bitmap->bitmap_lock);
+  if (!bitmap->changed && !bitmap->changed_not_flushed)
+  {
+    pthread_mutex_unlock(&bitmap->bitmap_lock);
+    DBUG_RETURN(0);
+  }
+
+  /*
+    Before flusing bitmap, ensure that we have incremented open count.
+    This is needed to ensure that we don't call
+    _ma_mark_file_changed() as part of flushing bitmap page as in this
+    case we would use mutex lock in wrong order.
+    It's extremely unlikely that the following test is true as normally
+    this is happening when table is flushed.
+  */
+  if (unlikely(!share->global_changed))
+  {
+    /* purecov: begin inspected */
+    /* unlock bitmap mutex as it can't be hold during _ma_mark_file_changed */
+    pthread_mutex_unlock(&bitmap->bitmap_lock);
+    _ma_mark_file_changed(share);
+    pthread_mutex_lock(&bitmap->bitmap_lock);
+    /* purecov: end */
+  }
+
   if (bitmap->changed || bitmap->changed_not_flushed)
   {
     bitmap->flush_all_requested++;
@@ -514,6 +556,7 @@ void _ma_bitmap_unlock(MARIA_SHARE *share)
 
   pthread_mutex_lock(&bitmap->bitmap_lock);
   bitmap->non_flushable= 0;
+  _ma_bitmap_unpin_all(share);
   send_signal= bitmap->waiting_for_non_flushable;
   if (!--bitmap->flush_all_requested)
     send_signal|= bitmap->waiting_for_flush_all_requested;
@@ -2544,9 +2587,9 @@ my_bool _ma_bitmap_free_full_pages(MARIA_HA *info, const uchar *extents,
                                    uint count)
 {
   MARIA_FILE_BITMAP *bitmap= &info->s->bitmap;
+  my_bool res;
   DBUG_ENTER("_ma_bitmap_free_full_pages");
 
-  pthread_mutex_lock(&bitmap->bitmap_lock);
   for (; count--; extents+= ROW_EXTENT_SIZE)
   {
     pgcache_page_no_t page=  uint5korr(extents);
@@ -2557,15 +2600,15 @@ my_bool _ma_bitmap_free_full_pages(MARIA_HA *info, const uchar *extents,
       if (page == 0 && page_count == 0)
         continue;                               /* Not used extent */
       if (pagecache_delete_pages(info->s->pagecache, &info->dfile, page,
-                                 page_count, PAGECACHE_LOCK_WRITE, 1) ||
-          _ma_bitmap_reset_full_page_bits(info, bitmap, page, page_count))
-      {
-        pthread_mutex_unlock(&bitmap->bitmap_lock);
+                                 page_count, PAGECACHE_LOCK_WRITE, 1))
+        DBUG_RETURN(1);
+      pthread_mutex_lock(&bitmap->bitmap_lock);
+      res= _ma_bitmap_reset_full_page_bits(info, bitmap, page, page_count);
+      pthread_mutex_unlock(&bitmap->bitmap_lock);
+      if (res)
         DBUG_RETURN(1);
-      }
     }
   }
-  pthread_mutex_unlock(&bitmap->bitmap_lock);
   DBUG_RETURN(0);
 }
 

storage/maria/ma_blockrec.c

@@ -2017,6 +2017,7 @@ static my_bool write_tail(MARIA_HA *info,
                                PAGECACHE_WRITE_DELAY, &page_link.link,
                                LSN_IMPOSSIBLE)))
     {
+      DBUG_ASSERT(page_link.link);
       page_link.unlock= PAGECACHE_LOCK_READ_UNLOCK;
       page_link.changed= 1;
       push_dynamic(&info->pinned_pages, (void*) &page_link);
@@ -3146,6 +3147,7 @@ static my_bool write_block_record(MARIA_HA *info,
                         PAGECACHE_WRITE_DELAY, &page_link.link,
                         LSN_IMPOSSIBLE))
       goto disk_err;
+    DBUG_ASSERT(page_link.link);
     page_link.unlock= PAGECACHE_LOCK_READ_UNLOCK;
     page_link.changed= 1;
     push_dynamic(&info->pinned_pages, (void*) &page_link);
@@ -6337,6 +6339,12 @@ uint _ma_apply_redo_insert_row_head_or_tail(MARIA_HA *info, LSN lsn,
   empty_space-= (uint) data_length;
   int2store(buff + EMPTY_SPACE_OFFSET, empty_space);
 
+  /* Fix bitmap */
+  if (!enough_free_entries_on_page(share, buff))
+    empty_space= 0;                         /* Page is full */
+  if (_ma_bitmap_set(info, page, page_type == HEAD_PAGE, empty_space))
+    goto err;
+
   /*
     If page was not read before, write it but keep it pinned.
     We don't update its LSN When we have processed all REDOs for this page
@@ -6354,12 +6362,6 @@ uint _ma_apply_redo_insert_row_head_or_tail(MARIA_HA *info, LSN lsn,
                       LSN_IMPOSSIBLE))
     result= my_errno;
 
-  /* Fix bitmap */
-  if (!enough_free_entries_on_page(share, buff))
-    empty_space= 0;                         /* Page is full */
-  if (_ma_bitmap_set(info, page, page_type == HEAD_PAGE, empty_space))
-    goto err;
-
   page_link.unlock= PAGECACHE_LOCK_WRITE_UNLOCK;
   page_link.changed= 1;
   push_dynamic(&info->pinned_pages, (void*) &page_link);

storage/maria/ma_check.c

@@ -3478,7 +3478,7 @@ int maria_zerofill(HA_CHECK *param, MARIA_HA *info, const char *name)
     _ma_tmp_disable_logging_for_table(info, 0);
   if (!(error= (maria_zerofill_index(param, info, name) ||
                 maria_zerofill_data(param, info, name) ||
-                _ma_set_uuid(info, 0))))
+                _ma_set_uuid(info->s, 0))))
   {
     /*
       Mark that we have done zerofill of data and index. If we zeroed pages'
@@ -3857,11 +3857,13 @@ int maria_repair_by_sort(HA_CHECK *param, register MARIA_HA *info,
       if (param->testflag & T_SAFE_REPAIR)
       {
 	/* Don't repair if we loosed more than one row */
-	if (share->state.state.records+1 < start_records)
+        if (sort_info.new_info->s->state.state.records+1 < start_records)
 	{
           _ma_check_print_error(param,
-                                "Rows lost; Aborting because safe repair was "
-                                "requested");
+                                "Rows lost (Found %lu of %lu); Aborting "
+                                "because safe repair was requested",
+                                (ulong) share->state.state.records,
+                                (ulong) start_records);
           share->state.state.records=start_records;
 	  goto err;
 	}
@@ -4420,8 +4422,13 @@ int maria_repair_parallel(HA_CHECK *param, register MARIA_HA *info,
     if (param->testflag & T_SAFE_REPAIR)
     {
       /* Don't repair if we loosed more than one row */
-      if (share->state.state.records+1 < start_records)
+      if (sort_info.new_info->s->state.state.records+1 < start_records)
       {
+        _ma_check_print_error(param,
+                              "Rows lost (Found %lu of %lu); Aborting "
+                              "because safe repair was requested",
+                              (ulong) share->state.state.records,
+                              (ulong) start_records);
         share->state.state.records=start_records;
         goto err;
       }
@@ -6069,6 +6076,7 @@ int maria_update_state_info(HA_CHECK *param, MARIA_HA *info,uint update)
   {
     share->state.open_count=0;
     share->global_changed=0;
+    share->changed= 1;
   }
   if (update & UPDATE_STAT)
   {
@@ -6096,7 +6104,6 @@ int maria_update_state_info(HA_CHECK *param, MARIA_HA *info,uint update)
                              MA_STATE_INFO_WRITE_DONT_MOVE_OFFSET |
                              MA_STATE_INFO_WRITE_FULL_INFO))
       goto err;
-    share->changed=0;
   }
   {						/* Force update of status */
     int error;

storage/maria/ma_close.c

@@ -39,9 +39,6 @@ int maria_close(register MARIA_HA *info)
   if (info->lock_type == F_EXTRA_LCK)
     info->lock_type=F_UNLCK;			/* HA_EXTRA_NO_USER_CHANGE */
 
-  if (share->reopen == 1 && share->kfile.file >= 0)
-    _ma_decrement_open_count(info);
-
   if (info->lock_type != F_UNLCK)
   {
     if (maria_lock_database(info,F_UNLCK))
@@ -76,6 +73,11 @@ int maria_close(register MARIA_HA *info)
 
     if (share->kfile.file >= 0)
     {
+      my_bool save_global_changed= share->global_changed;
+
+      /* Avoid _ma_mark_file_changed() when flushing pages */
+      share->global_changed= 1;
+
       if ((*share->once_end)(share))
         error= my_errno;
       if (flush_pagecache_blocks(share->pagecache, &share->kfile,
@@ -97,6 +99,16 @@ int maria_close(register MARIA_HA *info)
       if (((share->changed && share->base.born_transactional) ||
            maria_is_crashed(info)))
       {
+        if (save_global_changed)
+        {
+          /*
+            Reset effect of _ma_mark_file_changed(). Better to do it
+            here than in _ma_decrement_open_count(), as
+            _ma_state_info_write() will write the open_count.
+           */
+          save_global_changed= 0;
+          share->state.open_count--;
+        }        
         /*
           State must be written to file as it was not done at table's
           unlocking.
@@ -104,6 +116,19 @@ int maria_close(register MARIA_HA *info)
         if (_ma_state_info_write(share, MA_STATE_INFO_WRITE_DONT_MOVE_OFFSET))
           error= my_errno;
       }
+      DBUG_ASSERT(maria_is_crashed(info) || !share->base.born_transactional ||
+                  share->state.open_count == 0 ||
+                  share->open_count_not_zero_on_open);
+
+      /* Ensure that open_count is zero on close */
+      share->global_changed= save_global_changed;
+      _ma_decrement_open_count(info, 0);
+
+      /* Ensure that open_count really is zero */
+      DBUG_ASSERT(maria_is_crashed(info) || share->temporary ||
+                  share->state.open_count == 0 ||
+                  share->open_count_not_zero_on_open);
+
       /*
         File must be synced as it is going out of the maria_open_list and so
         becoming unknown to future Checkpoints.

storage/maria/ma_delete.c

@@ -63,7 +63,7 @@ int maria_delete(MARIA_HA *info,const uchar *record)
   if ((*share->compare_record)(info,record))
     goto err;				/* Error on read-check */
 
-  if (_ma_mark_file_changed(info))
+  if (_ma_mark_file_changed(share))
     goto err;
 
   /* Ensure we don't change the autoincrement value */

storage/maria/ma_delete_all.c

@@ -52,8 +52,6 @@ int maria_delete_all_rows(MARIA_HA *info)
   if (_ma_readinfo(info,F_WRLCK,1))
     DBUG_RETURN(my_errno);
   log_record= share->now_transactional && !share->temporary;
-  if (_ma_mark_file_changed(info))
-    goto err;
 
   if (log_record)
   {
@@ -75,14 +73,19 @@ int maria_delete_all_rows(MARIA_HA *info)
       If we fail in this function after this point, log and table will be
       inconsistent.
     */
+    if (_ma_mark_file_changed(share))
+      goto err;
   }
   else
   {
+    if (_ma_mark_file_changed(share))
+      goto err;
     /* Other branch called function below when writing log record, in hook */
     _ma_reset_status(info);
   }
   /* Remove old history as the table is now empty for everyone */
   _ma_reset_state(info);
+  share->state.changed= 0;
 
   /*
     If we are using delayed keys or if the user has done changes to the tables
@@ -180,6 +183,10 @@ void _ma_reset_status(MARIA_HA *info)
   state->state.data_file_length= 0;
   state->state.empty= state->state.key_empty= 0;
   state->state.checksum= 0;
+  share->state.open_count= 0;
+  share->global_changed= 0;
+
+  share->changed= 1;                            /* We must write state */
 
   *info->state= state->state;
 

storage/maria/ma_delete_table.c

@@ -28,10 +28,6 @@
 
 int maria_delete_table(const char *name)
 {
-  char from[FN_REFLEN];
-#ifdef USE_RAID
-  uint raid_type=0,raid_chunks=0;
-#endif
   MARIA_HA *info;
   myf sync_dir;
   DBUG_ENTER("maria_delete_table");
@@ -53,17 +49,10 @@ int maria_delete_table(const char *name)
   */
   if (!(info= maria_open(name, O_RDONLY, HA_OPEN_FOR_REPAIR)))
   {
-#ifdef USE_RAID
-    raid_type= 0;
-#endif
     sync_dir= 0;
   }
   else
   {
-#ifdef USE_RAID
-    raid_type=      info->s->base.raid_type;
-    raid_chunks=    info->s->base.raid_chunks;
-#endif
     sync_dir= (info->s->now_transactional && !info->s->temporary &&
                !maria_in_recovery) ?
       MY_SYNC_DIR : 0;
@@ -93,15 +82,19 @@ int maria_delete_table(const char *name)
       DBUG_RETURN(1);
   }
 
+  DBUG_RETURN(maria_delete_table_files(name, sync_dir));
+}
+
+
+int maria_delete_table_files(const char *name, myf sync_dir)
+{
+  char from[FN_REFLEN];
+  DBUG_ENTER("maria_delete_table_files");
+
   fn_format(from,name,"",MARIA_NAME_IEXT,MY_UNPACK_FILENAME|MY_APPEND_EXT);
   if (my_delete_with_symlink(from, MYF(MY_WME | sync_dir)))
     DBUG_RETURN(my_errno);
   fn_format(from,name,"",MARIA_NAME_DEXT,MY_UNPACK_FILENAME|MY_APPEND_EXT);
-#ifdef USE_RAID
-  if (raid_type)
-    DBUG_RETURN(my_raid_delete(from, raid_chunks, MYF(MY_WME | sync_dir)) ?
-                my_errno : 0);
-#endif
   DBUG_RETURN(my_delete_with_symlink(from, MYF(MY_WME | sync_dir)) ?
               my_errno : 0);
 }

storage/maria/ma_extra.c

@@ -254,8 +254,8 @@ int maria_extra(MARIA_HA *info, enum ha_extra_function function,
 
       if (!share->changed)
       {
-	share->state.changed|= STATE_CHANGED | STATE_NOT_ANALYZED;
 	share->changed= 1;			/* Update on close */
+	share->state.changed|= STATE_CHANGED | STATE_NOT_ANALYZED;
 	if (!share->global_changed)
 	{
 	  share->global_changed= 1;
@@ -291,10 +291,9 @@ int maria_extra(MARIA_HA *info, enum ha_extra_function function,
     if (!error && share->changed)
     {
       pthread_mutex_lock(&share->intern_lock);
-      if (!(error= _ma_state_info_write(share,
-                                        MA_STATE_INFO_WRITE_DONT_MOVE_OFFSET|
-                                        MA_STATE_INFO_WRITE_FULL_INFO)))
-        share->changed= 0;
+      error= _ma_state_info_write(share,
+                                  MA_STATE_INFO_WRITE_DONT_MOVE_OFFSET|
+                                  MA_STATE_INFO_WRITE_FULL_INFO);
       pthread_mutex_unlock(&share->intern_lock);
     }
     pthread_mutex_lock(&THR_LOCK_maria);
@@ -311,11 +310,14 @@ int maria_extra(MARIA_HA *info, enum ha_extra_function function,
     share->deleting= TRUE;
     share->global_changed= FALSE;     /* force writing changed flag */
     /* To force repair if reopened */
-    _ma_mark_file_changed(info);
+    share->state.open_count= 1;
+    share->changed= 1;
+    _ma_mark_file_changed_now(share);
     /* Fall trough */
   case HA_EXTRA_PREPARE_FOR_RENAME:
   {
     my_bool do_flush= test(function != HA_EXTRA_PREPARE_FOR_DROP);
+    my_bool save_global_changed;
     enum flush_type type;
     pthread_mutex_lock(&THR_LOCK_maria);
     /*
@@ -340,7 +342,7 @@ int maria_extra(MARIA_HA *info, enum ha_extra_function function,
     */
     pthread_mutex_lock(&share->intern_lock);
     if (share->kfile.file >= 0 && function != HA_EXTRA_PREPARE_FOR_DROP)
-      _ma_decrement_open_count(info);
+      _ma_decrement_open_count(info, 0);
     if (info->trn)
     {
       _ma_remove_table_from_trnman(share, info->trn);
@@ -349,12 +351,15 @@ int maria_extra(MARIA_HA *info, enum ha_extra_function function,
     }
 
     type= do_flush ? FLUSH_RELEASE : FLUSH_IGNORE_CHANGED;
+    save_global_changed= share->global_changed;
+    share->global_changed= 1;                 /* Don't increment open count */
     if (_ma_flush_table_files(info, MARIA_FLUSH_DATA | MARIA_FLUSH_INDEX,
                               type, type))
     {
       error=my_errno;
       share->changed= 1;
     }
+    share->global_changed= save_global_changed;
     if (info->opt_flag & (READ_CACHE_USED | WRITE_CACHE_USED))
     {
       info->opt_flag&= ~(READ_CACHE_USED | WRITE_CACHE_USED);
@@ -372,13 +377,13 @@ int maria_extra(MARIA_HA *info, enum ha_extra_function function,
                                   MA_STATE_INFO_WRITE_FULL_INFO)) ||
             my_sync(share->kfile.file, MYF(0)))
           error= my_errno;
-        else
-          share->changed= 0;
       }
       else
       {
         /* be sure that state is not tried for write as file may be closed */
         share->changed= 0;
+        share->global_changed= 0;
+        share->state.open_count= 0;
       }
     }
     if (share->data_file_type == BLOCK_RECORD &&
@@ -410,8 +415,8 @@ int maria_extra(MARIA_HA *info, enum ha_extra_function function,
     if (!share->temporary)
       error= _ma_flush_table_files(info, MARIA_FLUSH_DATA | MARIA_FLUSH_INDEX,
                                    FLUSH_KEEP, FLUSH_KEEP);
-#ifdef HAVE_PWRITE
-    _ma_decrement_open_count(info);
+#ifdef HAVE_PREAD
+    _ma_decrement_open_count(info, 1);
 #endif
     if (share->not_flushed)
     {
@@ -601,6 +606,8 @@ int _ma_flush_table_files(MARIA_HA *info, uint flush_data_or_index,
 {
   int error= 0;
   MARIA_SHARE *share= info->s;
+  DBUG_ENTER("_ma_flush_table_files");
+
   /* flush data file first because it's more critical */
   if (flush_data_or_index & MARIA_FLUSH_DATA)
   {
@@ -632,8 +639,8 @@ int _ma_flush_table_files(MARIA_HA *info, uint flush_data_or_index,
                              flush_type_for_index))
     error= 1;
   if (!error)
-    return 0;
+    DBUG_RETURN(0);
 
   _ma_set_fatal_error(info->s, HA_ERR_CRASHED);
-  return 1;
+  DBUG_RETURN(1);
 }

storage/maria/ma_locking.c

@@ -386,12 +386,39 @@ int _ma_test_if_changed(register MARIA_HA *info)
 #define _MA_ALREADY_MARKED_FILE_CHANGED                                 \
   ((share->state.changed & STATE_CHANGED) && share->global_changed)
 
-int _ma_mark_file_changed(MARIA_HA *info)
+int _ma_mark_file_changed(register MARIA_SHARE *share)
+{
+  if (!share->base.born_transactional)
+  {
+    if (!_MA_ALREADY_MARKED_FILE_CHANGED)
+      return _ma_mark_file_changed_now(share);
+  }
+  else
+  {
+    /*
+      For transactional tables, the table is marked changed when the first page
+      is written. Here we just mark the state to be updated so that caller
+      can do 'anaylze table' and find that is has changed before any pages
+      are written.
+    */
+    if (! test_all_bits(share->state.changed,
+                        (STATE_CHANGED | STATE_NOT_ANALYZED |
+                         STATE_NOT_OPTIMIZED_KEYS)))
+    {
+      pthread_mutex_lock(&share->intern_lock);    
+      share->state.changed|=(STATE_CHANGED | STATE_NOT_ANALYZED |
+                             STATE_NOT_OPTIMIZED_KEYS);
+      pthread_mutex_unlock(&share->intern_lock);    
+    }
+  }
+  return 0;
+}
+
+int _ma_mark_file_changed_now(register MARIA_SHARE *share)
 {
   uchar buff[3];
-  register MARIA_SHARE *share= info->s;
   int error= 1;
-  DBUG_ENTER("_ma_mark_file_changed");
+  DBUG_ENTER("_ma_mark_file_changed_now");
 
   if (_MA_ALREADY_MARKED_FILE_CHANGED)
     DBUG_RETURN(0);
@@ -402,7 +429,7 @@ int _ma_mark_file_changed(MARIA_HA *info)
 			   STATE_NOT_OPTIMIZED_KEYS);
     if (!share->global_changed)
     {
-      share->global_changed=1;
+      share->changed= share->global_changed= 1;
       share->state.open_count++;
     }
     /*
@@ -430,7 +457,7 @@ int _ma_mark_file_changed(MARIA_HA *info)
         !(share->state.changed & STATE_NOT_MOVABLE))
     {
       /* Lock table to current installation */
-      if (_ma_set_uuid(info, 0) ||
+      if (_ma_set_uuid(share, 0) ||
           (share->state.create_rename_lsn == LSN_NEEDS_NEW_STATE_LSNS &&
            _ma_update_state_lsns_sub(share, LSN_IMPOSSIBLE,
                                      trnman_get_min_trid(),
@@ -472,22 +499,31 @@ my_bool _ma_check_if_zero(uchar *pos, size_t length)
   call.  In these context the following code should be safe!
  */
 
-int _ma_decrement_open_count(MARIA_HA *info)
+int _ma_decrement_open_count(MARIA_HA *info, my_bool lock_tables)
 {
   uchar buff[2];
   register MARIA_SHARE *share= info->s;
   int lock_error=0,write_error=0;
+  DBUG_ENTER("_ma_decrement_open_count");
+
   if (share->global_changed)
   {
     uint old_lock=info->lock_type;
     share->global_changed=0;
-    lock_error= my_disable_locking ? 0 : maria_lock_database(info, F_WRLCK);
+    lock_error= (my_disable_locking || ! lock_tables ? 0 :
+                 maria_lock_database(info, F_WRLCK));
     /* Its not fatal even if we couldn't get the lock ! */
     if (share->state.open_count > 0)
     {
       share->state.open_count--;
       share->changed= 1;                        /* We have to update state */
-      if (!share->temporary)
+      /*
+        For temporary tables that will just be deleted, we don't have
+        to decrement state. For transactional tables the state will be
+        updated in maria_close().
+      */
+
+      if (!share->temporary && !share->now_transactional)
       {
         mi_int2store(buff,share->state.open_count);
         write_error= (int) my_pwrite(share->kfile.file, buff, sizeof(buff),
@@ -496,10 +532,10 @@ int _ma_decrement_open_count(MARIA_HA *info)
                                      MYF(MY_NABP));
       }
     }
-    if (!lock_error && !my_disable_locking)
+    if (!lock_error && !my_disable_locking && lock_tables)
       lock_error=maria_lock_database(info,old_lock);
   }
-  return test(lock_error || write_error);
+  DBUG_RETURN(test(lock_error || write_error));
 }
 
 
@@ -552,12 +588,12 @@ void _ma_set_fatal_error(MARIA_SHARE *share, int error)
    @brief Set uuid of for a Maria file
 
    @fn _ma_set_uuid()
-   @param info		Maria handler
+   @param share		Maria share
    @param reset_uuid    Instead of setting file to maria_uuid, set it to
 			0 to mark it as movable
 */
 
-my_bool _ma_set_uuid(MARIA_HA *info, my_bool reset_uuid)
+my_bool _ma_set_uuid(MARIA_SHARE *share, my_bool reset_uuid)
 {
   uchar buff[MY_UUID_SIZE], *uuid;
 
@@ -567,7 +603,7 @@ my_bool _ma_set_uuid(MARIA_HA *info, my_bool reset_uuid)
     bzero(buff, sizeof(buff));
     uuid= buff;
   }
-  return (my_bool) my_pwrite(info->s->kfile.file, uuid, MY_UUID_SIZE,
-                             mi_uint2korr(info->s->state.header.base_pos),
+  return (my_bool) my_pwrite(share->kfile.file, uuid, MY_UUID_SIZE,
+                             mi_uint2korr(share->state.header.base_pos),
                              MYF(MY_NABP));
 }

storage/maria/ma_open.c

@@ -429,6 +429,8 @@ MARIA_HA *maria_open(const char *name, int mode, uint open_flags)
 		HA_ERR_CRASHED_ON_REPAIR : HA_ERR_CRASHED_ON_USAGE);
       goto err;
     }
+    if (share->state.open_count)
+      share->open_count_not_zero_on_open= 1;
 
     /*
       We can ignore testing uuid if STATE_NOT_MOVABLE is set, as in this
@@ -790,7 +792,8 @@ MARIA_HA *maria_open(const char *name, int mode, uint open_flags)
       share->options|= HA_OPTION_READ_ONLY_DATA;
     share->is_log_table= FALSE;
 
-    if (open_flags & HA_OPEN_TMP_TABLE)
+    if (open_flags & HA_OPEN_TMP_TABLE ||
+        (share->options & HA_OPTION_TMP_TABLE))
     {
       share->options|= HA_OPTION_TMP_TABLE;
       share->temporary= share->delay_key_write= 1;
@@ -913,6 +916,19 @@ MARIA_HA *maria_open(const char *name, int mode, uint open_flags)
         share->lock.start_trans=    _ma_block_start_trans_no_versioning;
       }
     }
+#endif
+#ifdef SAFE_MUTEX
+    if (share->data_file_type == BLOCK_RECORD)
+    {
+      /*
+        We must have internal_lock before bitmap_lock because we call
+        _ma_flush_tables_files() with internal_lock locked.
+      */
+      pthread_mutex_lock(&share->intern_lock);
+      pthread_mutex_lock(&share->bitmap.bitmap_lock);
+      pthread_mutex_unlock(&share->bitmap.bitmap_lock);
+      pthread_mutex_unlock(&share->intern_lock);
+    }
 #endif
     /*
       Memory mapping can only be requested after initializing intern_lock.
@@ -1251,7 +1267,8 @@ uint _ma_state_info_write(MARIA_SHARE *share, uint pWrite)
   res= _ma_state_info_write_sub(share->kfile.file, &share->state, pWrite);
   if (pWrite & MA_STATE_INFO_WRITE_LOCK)
     pthread_mutex_unlock(&share->intern_lock);
-  share->changed= 0;
+  /* If open_count != 0 we have to write the state again at close */
+  share->changed= share->state.open_count != 0;
   return res;
 }
 

storage/maria/ma_pagecache.c

@@ -1380,6 +1380,8 @@ static void link_block(PAGECACHE *pagecache, PAGECACHE_BLOCK_LINK *block,
   else
   {
     /* The LRU chain is empty */
+    /* QQ: Ask sanja if next line is correct; Should we really put block
+       in both chain if one chain is empty ? */
     pagecache->used_last= pagecache->used_ins= block->next_used= block;
     block->prev_used= &block->next_used;
   }
@@ -1803,6 +1805,7 @@ restart:
     link_hash(start, hash_link);
     /* Register the request for the page */
     hash_link->requests++;
+    DBUG_ASSERT(hash_link->block == 0);
   }
 
   return hash_link;
@@ -1824,7 +1827,10 @@ restart:
       wrmode              <-> get for writing
       block_is_copied     1 if block will be copied from page cache under
                           the pagelock mutex.
-      reg_req             Register request to the page
+      reg_req             Register request to the page. Normally all pages
+                          should be registered; The only time it's ok to
+                          not register a page is when the page is already
+                          pinned (and thus registered) by the same thread.
       page_st        out  {PAGE_READ,PAGE_TO_BE_READ,PAGE_WAIT_TO_BE_READ}
 
   RETURN VALUE
@@ -2028,6 +2034,7 @@ restart:
 #ifndef DBUG_OFF
         block->type= PAGECACHE_EMPTY_PAGE;
 #endif
+        DBUG_ASSERT(reg_req);
         block->requests= 1;
         block->temperature= PCBLOCK_COLD;
         block->hits_left= init_hits_left;
@@ -2068,12 +2075,17 @@ restart:
           }
           while (thread->next);
           thread->opt_info= NULL;
+          block= hash_link->block;
+          /*
+            Ensure that we are register this block (all blocks not used by this
+            thread has to be registered).
+          */
+          DBUG_ASSERT(reg_req);
         }
+        else
 #else
         KEYCACHE_DBUG_ASSERT(pagecache->used_last);
 #endif
-        block= hash_link->block;
-        if (! block)
         {
           /*
              Take the first block from the LRU chain
@@ -3455,7 +3467,10 @@ restart:
       if (make_lock_and_pin(pagecache, block,
                             lock_to_read[lock].unlock_lock,
                             unlock_pin, FALSE))
+      {
         DBUG_ASSERT(0);
+        return (uchar*) 0;
+      }
     }
     /*
       Link the block into the LRU chain if it's the last submitted request
@@ -3959,7 +3974,10 @@ restart:
 
     inc_counter_for_resize_op(pagecache);
     pagecache->global_cache_w_requests++;
-    /* See NOTE for pagecache_unlock about registering requests. */
+    /*
+      Here we register a request if the page was not already pinned.
+      See NOTE for pagecache_unlock about registering requests.
+    */
     reg_request= ((pin == PAGECACHE_PIN_LEFT_UNPINNED) ||
                   (pin == PAGECACHE_PIN));
     block= find_block(pagecache, file, pageno, level,
@@ -4108,7 +4126,10 @@ restart:
     block->hash_link->requests--;
     /* See NOTE for pagecache_unlock about registering requests. */
     if (pin == PAGECACHE_PIN_LEFT_UNPINNED || pin == PAGECACHE_UNPIN)
+    {
       unreg_request(pagecache, block, 1);
+      DBUG_ASSERT(page_link == &fake_link);
+    }
     else
       *page_link= block;
 

storage/maria/ma_pagecrc.c

@@ -355,9 +355,7 @@ my_bool maria_flush_log_for_page(uchar *page,
                                  uchar *data_ptr __attribute__((unused)))
 {
   LSN lsn;
-#ifndef DBUG_OFF
-  const MARIA_SHARE *share= (MARIA_SHARE*) data_ptr;
-#endif
+  MARIA_SHARE *share= (MARIA_SHARE*) data_ptr;
   DBUG_ENTER("maria_flush_log_for_page");
   /* share is 0 here only in unittest */
   DBUG_ASSERT(!share || (share->page_type == PAGECACHE_LSN_PAGE &&
@@ -365,6 +363,12 @@ my_bool maria_flush_log_for_page(uchar *page,
   lsn= lsn_korr(page);
   if (translog_flush(lsn))
     DBUG_RETURN(1);
+  /*
+    Now when log is written, it's safe to incremented 'open' counter for
+    the table so that we know it was not closed properly.
+  */
+  if (share && !share->global_changed)
+    _ma_mark_file_changed_now(share);
   DBUG_RETURN(0);
 }
 

storage/maria/ma_recovery.c

@@ -1306,6 +1306,7 @@ prototype_redo_exec_hook(FILE_ID)
       /* let ma_close() mark the table properly closed */
       info->s->state.open_count= 1;
       info->s->global_changed= 1;
+      info->s->changed= 1;
     }
     if (maria_close(info))
     {
@@ -3430,6 +3431,7 @@ static int close_all_tables(void)
       /* let maria_close() mark the table properly closed */
       info->s->state.open_count= 1;
       info->s->global_changed= 1;
+      info->s->changed= 1;
     }
     prepare_table_for_close(info, addr);
     error|= maria_close(info);

storage/maria/ma_update.c

@@ -74,7 +74,8 @@ int maria_update(register MARIA_HA *info, const uchar *oldrec, uchar *newrec)
       goto err_end;
     }
   }
-  if (_ma_mark_file_changed(info))
+
+  if (_ma_mark_file_changed(share))
   {
     save_errno=my_errno;
     goto err_end;

storage/maria/ma_write.c

@@ -120,7 +120,7 @@ int maria_write(MARIA_HA *info, uchar *record)
     my_errno=HA_ERR_INDEX_FILE_FULL;
     goto err2;
   }
-  if (_ma_mark_file_changed(info))
+  if (_ma_mark_file_changed(share))
     goto err2;
 
   /* Calculate and check all unique constraints */

storage/maria/maria_chk.c

@@ -41,7 +41,8 @@ static const char *set_collation_name, *opt_tmpdir, *opt_log_dir;
 static CHARSET_INFO *set_collation;
 static int stopwords_inited= 0;
 static MY_TMPDIR maria_chk_tmpdir;
-static my_bool opt_transaction_logging, opt_debug, opt_require_control_file;
+static my_bool opt_transaction_logging, opt_debug;
+static my_bool opt_ignore_control_file, opt_require_control_file;
 static my_bool opt_warning_for_wrong_transid, opt_update_state;
 
 static const char *type_names[]=
@@ -115,10 +116,11 @@ int main(int argc, char **argv)
   maria_init();
 
   maria_block_size= 0;                 /* Use block size from control file */
-  if (ma_control_file_open(FALSE, opt_require_control_file ||
-                           !(check_param.testflag & T_SILENT)) &&
-      (opt_require_control_file ||
-       (opt_transaction_logging && (check_param.testflag & T_REP_ANY))))
+  if (!opt_ignore_control_file &&
+      (ma_control_file_open(FALSE, opt_require_control_file ||
+                            !(check_param.testflag & T_SILENT)) &&
+       (opt_require_control_file ||
+        (opt_transaction_logging && (check_param.testflag & T_REP_ANY)))))
   {
     error= 1;
     goto end;
@@ -203,7 +205,8 @@ enum options_mc {
   OPT_SORT_KEY_BLOCKS, OPT_DECODE_BITS, OPT_FT_MIN_WORD_LEN,
   OPT_FT_MAX_WORD_LEN, OPT_FT_STOPWORD_FILE,
   OPT_MAX_RECORD_LENGTH, OPT_AUTO_CLOSE, OPT_STATS_METHOD, OPT_TRANSACTION_LOG,
-  OPT_SKIP_SAFEMALLOC, OPT_ZEROFILL_KEEP_LSN, OPT_REQUIRE_CONTROL_FILE,
+  OPT_SKIP_SAFEMALLOC, OPT_ZEROFILL_KEEP_LSN,
+  OPT_REQUIRE_CONTROL_FILE, OPT_IGNORE_CONTROL_FILE,
   OPT_LOG_DIR, OPT_DATADIR, OPT_WARNING_FOR_WRONG_TRANSID
 };
 
@@ -265,6 +268,10 @@ static struct my_option my_long_options[] =
   {"information", 'i',
    "Print statistics information about table that is checked.",
    0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
+  { "ignore-control-file", OPT_IGNORE_CONTROL_FILE,
+    "Ignore the control file",
+    (uchar**)&opt_ignore_control_file, 0, 0, GET_BOOL, NO_ARG,
+    0, 0, 0, 0, 0, 0},
   {"keys-used", 'k',
    "Tell MARIA to update only some specific keys. # is a bit mask of which keys to use. This can be used to get faster inserts.",
    &check_param.keys_in_use,
@@ -452,6 +459,9 @@ static void usage(void)
   -?, --help          Display this help and exit.\n\
   --datadir=path      Path for control file (and logs if --logdir not used)\n\
   --logdir=path       Path for log files\n\
+  --ignore-control-file  Don't open the control file. Only use this if you\n\
+                         are sure the tables are not in use by another\n\
+                         program!\n\
   --require-control-file  Abort if we can't find/read the maria_log_control\n\
                           file\n\
   -s, --silent	      Only print errors.  One can use two -s to make\n\
@@ -493,7 +503,7 @@ static void usage(void)
  		      rid of warnings like 'table not properly closed'. If\n\
 		      table was updated, update also the timestamp for when\n\
  		      the check was made. This option is on by default!\n\
-		      use --skip-update-state to disable.\n\
+		      Use --skip-update-state to disable.\n\
   --warning-for-wrong-transaction-id\n\
    Give a warning if we find a transaction id in the table that is bigger\n\
    than what exists in the control file. Use --skip-... to disable warning\n\

storage/maria/maria_def.h

@@ -380,6 +380,11 @@ typedef struct st_maria_share
   my_bool temporary;
   /* Below flag is needed to make log tables work with concurrent insert */
   my_bool is_log_table;
+  /*
+    Set to 1 if open_count was wrong at open. Set to avoid asserts for
+    wrong open count on close.
+  */
+  my_bool open_count_not_zero_on_open;
 
   my_bool changed,			/* If changed since lock */
     global_changed,			/* If changed since open */
@@ -921,12 +926,13 @@ extern my_bool _ma_ck_real_delete(register MARIA_HA *info, MARIA_KEY *key,
 extern int _ma_readinfo(MARIA_HA *info, int lock_flag, int check_keybuffer);
 extern int _ma_writeinfo(MARIA_HA *info, uint options);
 extern int _ma_test_if_changed(MARIA_HA *info);
-extern int _ma_mark_file_changed(MARIA_HA *info);
+extern int _ma_mark_file_changed(MARIA_SHARE *info);
+extern int _ma_mark_file_changed_now(MARIA_SHARE *info);
 extern void _ma_mark_file_crashed(MARIA_SHARE *share);
 void _ma_set_fatal_error(MARIA_SHARE *share, int error);
-extern my_bool _ma_set_uuid(MARIA_HA *info, my_bool reset_uuid);
+extern my_bool _ma_set_uuid(MARIA_SHARE *info, my_bool reset_uuid);
 extern my_bool _ma_check_if_zero(uchar *pos, size_t size);
-extern int _ma_decrement_open_count(MARIA_HA *info);
+extern int _ma_decrement_open_count(MARIA_HA *info, my_bool lock_table);
 extern int _ma_check_index(MARIA_HA *info, int inx);
 extern int _ma_search(MARIA_HA *info, MARIA_KEY *key, uint32 nextflag,
                       my_off_t pos);
@@ -1181,6 +1187,7 @@ void _ma_remap_file(MARIA_HA *info, my_off_t size);
 
 MARIA_RECORD_POS _ma_write_init_default(MARIA_HA *info, const uchar *record);
 my_bool _ma_write_abort_default(MARIA_HA *info);
+int maria_delete_table_files(const char *name, myf sync_dir);
 
 C_MODE_START
 #define MARIA_FLUSH_DATA  1

storage/myisam/ha_myisam.cc

@@ -1471,7 +1471,7 @@ int ha_myisam::enable_indexes(uint mode)
   }
   else if (mode == HA_KEY_SWITCH_NONUNIQ_SAVE)
   {
-    THD *thd=current_thd;
+    THD *thd= table->in_use;
     HA_CHECK &param= *(HA_CHECK*) thd->alloc(sizeof(param));
     const char *save_proc_info=thd->proc_info;