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Author SHA1 Message Date
Georgi Kodinov
4d7ad72e52 fixed test suite failures in 5.1-bugteam 2008-10-07 19:54:12 +03:00
Guilhem Bichot
84c1fffabb Fix for BUG#31612 
"Trigger fired multiple times leads to gaps in auto_increment sequence".
The bug was that if a trigger fired multiple times inside a top
statement (for example top-statement is a multi-row INSERT,
and trigger is ON INSERT), and that trigger inserted into an auto_increment
column, then gaps could be observed in the auto_increment sequence,
even if there were no other users of the database (no concurrency).
It was wrong usage of THD::auto_inc_intervals_in_cur_stmt_for_binlog.
Note that the fix changes "class handler", I'll tell the Storage Engine API team.

mysql-test/r/trigger-trans.result:
  result; before the bugfix, the sequence was 1,2,4,6,8,10,12...
mysql-test/t/trigger-trans.test:
  test for BUG#31612
sql/handler.cc:
  See revision comment of handler.h.
  As THD::auto_inc_intervals_in_cur_stmt_for_binlog is cumulative
  over all trigger invokations by the top statement, the
  second invokation of the trigger arrived in handler::update_auto_increment()
  with already one interval in
  THD::auto_inc_intervals_in_cur_stmt_for_binlog. The method thus
  believed it had already reserved one interval for that invokation,
  thus reserved a twice larger interval (heuristic when we don't know
  how large the interval should be: we grow by powers of two). InnoDB
  thus increased its internal per-table auto_increment counter by 2
  while only one row was to be inserted. Hence a gap in the sequence.
  The fix is to use the new handler::auto_inc_intervals_count.
  Note that the trigger's statement knows how many rows it is going
  to insert, but provides estimation_rows_to_insert == 0 (see comments
  in sql_insert.cc why triggers don't call handler::ha_start_bulk_insert()).
  * removing white space at end of line
  * we don't need to maintain THD::auto_inc_intervals_in_cur_stmt_for_binlog
  if no binlogging or if row-based binlogging. Using auto_inc_intervals_count in
  the heuristic makes the heuristic independent of binary logging, which is good.
sql/handler.h:
  THD::auto_inc_intervals_in_cur_stmt_for_binlog served
   - for binlogging
   - as a heuristic when we have no estimation of how many records the
     statement will insert.
  But the first goal needs to be cumulative over all statements which
  form a binlog event, while the second one needs to be attached to each
  statement. THD::auto_inc_intervals_in_cur_stmt_for_binlog is cumulative,
  leading to BUG#31612. So we introduce handler::auto_inc_intervals_count
  for the second goal. See the revision comment of handler.cc.
  A smaller issue was that, even when the binlog event was only one
  statement (no triggers, no stored functions),
  THD::auto_inc_intervals_in_cur_stmt.nb_elements() could be lower than
  the number of reserved intervals (fooling the heuristic), because its
  append() method collapses two contiguous intervals in one.
  Note that as auto_inc_intervals_count is in class 'handler' and not
  in class 'THD', it does not need to be handled in
  THD::reset|restore_sub_statement_state().
sql/log.cc:
  Comment is wrong: if auto_increment is second, in handler::update_auto_increment()
  'append' is false and so auto_inc_intervals_in_cur_stmt_for_binlog
  is empty, we do not come here.
sql/sql_class.h:
  comment
 2008-10-06 16:06:59 +02:00
Mattias Jonsson
f50c4207f2 Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that 
partition is corrupt

The main problem was that ALTER TABLE t ANALYZE/CHECK/OPTIMIZE/REPAIR
PARTITION took another code path (over mysql_alter_table instead of
mysql_admin_table) which differs in two ways:
1) alter table opens the tables in a different way than admin tables do
   resulting in returning with error before it tried the command
2) alter table does not start to send any diagnostic rows to the client
   which the lower admin functions continue to use -> resulting in
   assertion crash

The fix:
Remapped ALTER TABLE t ANALYZE/CHECK/OPTIMIZE/REPAIR PARTITION to use
the same code path as ANALYZE/CHECK/OPTIMIZE/REPAIR TABLE t.
Adding check in mysql_admin_table to setup the partition list for
which partitions that should be used.


Partitioned tables will still not work with
REPAIR TABLE/PARTITION USE_FRM, since that requires moving partitions
to tables, REPAIR TABLE t USE_FRM, and check that the data still
fulfills the partitioning function and then move the table back to
being a partition.

NOTE: I have removed the following functions from the handler
interface:
analyze_partitions, check_partitions, optimize_partitions,
repair_partitions
Since they are not longer needed.
THIS ALTERS THE STORAGE ENGINE API

mysql-test/r/handler_innodb.result:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Added a note result row.
mysql-test/r/innodb.result:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Added a note result row.
mysql-test/r/innodb_mysql.result:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Added a note result row.
mysql-test/r/partition.result:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Updated after fixing ANALYZE/CHECK/OPTIMIZE/REPAIR partitioned
  tables.
mysql-test/r/trigger-trans.result:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Added a note result row.
mysql-test/suite/ndb/r/ndb_partition_key.result:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Updated after fixing ANALYZE/CHECK/OPTIMIZE/REPAIR partitioned
  tables.
mysql-test/suite/ndb/t/ndb_partition_key.test:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Updated after fixing ANALYZE/CHECK/OPTIMIZE/REPAIR partitioned
  tables.
mysql-test/suite/parts/inc/partition_alter4.inc:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Updated after fixing ANALYZE/CHECK/OPTIMIZE/REPAIR partitioned
  tables.
mysql-test/suite/parts/r/partition_alter4_innodb.result:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Updated after fixing ANALYZE/CHECK/OPTIMIZE/REPAIR partitioned
  tables.
mysql-test/suite/parts/r/partition_alter4_myisam.result:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Updated after fixing ANALYZE/CHECK/OPTIMIZE/REPAIR partitioned
  tables.
mysql-test/suite/rpl/r/rpl_failed_optimize.result:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Added a note result row.
mysql-test/suite/rpl/r/rpl_innodb_mixed_dml.result:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Added a note result row.
mysql-test/t/partition.test:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Updated after fixing ANALYZE/CHECK/OPTIMIZE/REPAIR partitioned
  tables.
sql/ha_partition.cc:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Added a function for returning admin commands result rows
  Updated handle_opt_partitions to handle admin commands result rows,
  and some error filtering (as mysql_admin_table do).
  
  Removed the functions analyze/check/optimize/repair_partitions
  since they have no longer any use.
sql/ha_partition.h:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Removed analyze/check/optimize/repair_partitions since they
  are no longer are needed.
sql/handler.cc:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Removed analyze/check/optimize/repair_partitions since they
  are no longer are needed.
sql/handler.h:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Removed analyze/check/optimize/repair_partitions since they
  are no longer are needed.
sql/mysql_priv.h:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Added set_part_state for reuse of code in mysql_admin_table.
  (Originally fond in sql/sql_partition.cc:prep_alter_part_table)
sql/protocol.cc:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Added one assert and a debug print.
sql/sql_partition.cc:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Refactored code for setting up partition state, set_part_state,
  now used in both prep_alter_part_table and
  sql_table.cc:mysql_admin_table.
  Removed code for handling ANALYZE/CHECK/OPTIMIZE/REPAIR partitions,
  since it is now handled by mysql_admin_table.
sql/sql_table.cc:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Added functionality in mysql_admin_table to work with partitioned
  tables.
  Fixed a possible assertion bug for HA_ADMIN_TRY_ALTER
  (If analyze would output a row, it fails since the row was already
  started).
sql/sql_yacc.yy:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Remapped ALTER TABLE t ANALYZE/CHECK/OPTIMIZE/REPAIR PARTITION
  to use the same code path as ANALYZE/CHECK/OPTIMIZE/REPAIR TABLE
  instead of taking the ALTER TABLE path.
  Added reset of alter_info for ANALYZE/CHECK/OPTIMIZE/REPAIR TABLE
  since it is now used by partitioned tables.
storage/myisam/mi_check.c:
  Bug#20129: ALTER TABLE ... REPAIR PARTITION ... complains that
  partition is corrupt
  
  Changed warning message from "Found X parts  Should be: Y parts"
  to "Found X key parts. Should be Y", since it could be confusing
  with partitioned tables.
 2008-08-11 20:02:03 +02:00
unknown
326c4e9058 A fix for Bug#34643: TRUNCATE crash if trigger and foreign key. 
In cases when TRUNCATE was executed by invoking mysql_delete() rather
than by table recreation (for example, when TRUNCATE was issued on
InnoDB table with is referenced by foreign key) triggers were invoked.
In debug builds this also led to crash because of an assertion, which
assumes that some preliminary actions take place before trigger 
invocation, which doesn't happen in case of TRUNCATE.

The fix is not to execute triggers in mysql_delete() when this
function is used by TRUNCATE.


mysql-test/r/trigger-trans.result:
  Update result file.
mysql-test/t/trigger-trans.test:
  A test case for Bug#34643: TRUNCATE crash if trigger and foreign key.
sql/sql_delete.cc:
  Do not process triggers in TRUNCATE.
 2008-03-12 16:13:33 +03:00
unknown
9dc3088f9e A fix and a test case for Bug#26141 mixing table types in trigger 
causes full table lock on innodb table.
Also fixes Bug#28502 Triggers that update another innodb table 
will block on X lock unnecessarily (duplciate).
Code review fixes.

Both bugs' synopses are misleading: InnoDB table is
not X locked. The statements, however, cannot proceed concurrently, 
but this happens due to lock conflicts for tables used in triggers,
not for the InnoDB table. 

If a user had an InnoDB table, and two triggers, AFTER UPDATE and 
AFTER INSERT, competing for different resources (e.g. two distinct
MyISAM tables), then these two triggers would not be able to execute
concurrently. Moreover, INSERTS/UPDATES of the InnoDB table would
not be able to run concurrently. 
The problem had other side-effects (see respective bug reports).

This behavior was a consequence of a shortcoming of the pre-locking
algorithm, which would not distinguish between different DML operations
(e.g. INSERT and DELETE) and pre-lock all the tables
that are used by any trigger defined on the subject table.

The idea of the fix is to extend the pre-locking algorithm to keep track,
for each table, what DML operation it is used for and not
load triggers that are known to never be fired.


mysql-test/r/trigger-trans.result:
  Update results (Bug#26141)
mysql-test/r/trigger.result:
  Update results (Bug#28502)
mysql-test/t/trigger-trans.test:
  Add a test case for Bug#26141 mixing table types in trigger causes 
  full table lock on innodb table.
mysql-test/t/trigger.test:
  Add a test case for Bug#28502 Triggers that update another innodb 
  table will block echo on X lock unnecessarily. Add more test 
  coverage for triggers.
sql/item.h:
  enum trg_event_type is needed in table.h
sql/sp.cc:
  Take into account table_list->trg_event_map when determining
  what tables to pre-lock. 
  
  After this change, if we attempt to fire a 
  trigger for which we had not pre-locked any tables, error
  'Table was not locked with LOCK TABLES' will be printed.
  This, however, should never happen, provided the pre-locking
  algorithm has no programming bugs.
  
  Previously a trigger key in the sroutines hash was based on the name 
  of the table the trigger belongs to. This was possible because we would
  always add to the pre-locking list all the triggers defined for a table when
  handling this table.
  Now the key is based on the name of the trigger, owing
  to the fact that a trigger name must be unique in the database it
  belongs to.
sql/sp_head.cc:
  Generate sroutines hash key in init_spname(). This is a convenient
  place since there we have all the necessary information and can
  avoid an extra alloc.
  
  Maintain and merge trg_event_map when adding and merging elements
  of the pre-locking list.
sql/sp_head.h:
  Add ,m_sroutines_key member, used when inserting the sphead for a
  trigger into the cache of routines used by a statement.
  Previously the key was based on the table name the trigger belonged
  to, since for a given table we would add to the sroutines list
  all the triggers defined on it.
sql/sql_lex.cc:
  Introduce a new lex step: set_trg_event_type_for_tables().
  It is called when we have finished parsing but before opening
  and locking tables. Now this step is used to evaluate for each
  TABLE_LIST instance which INSERT/UPDATE/DELETE operation, if any,
  it is used in.
  In future this method could be extended to aggregate other information
  that is hard to aggregate during parsing.
sql/sql_lex.h:
  Add declaration for set_trg_event_type_for_tables().
sql/sql_parse.cc:
  Call set_trg_event_type_for_tables() after MYSQLparse(). Remove tabs.
sql/sql_prepare.cc:
  Call set_trg_event_type_for_tables() after  MYSQLparse().
sql/sql_trigger.cc:
  Call set_trg_event_type_for_tables() after MYSQLparse().
sql/sql_trigger.h:
  Remove an obsolete member.
sql/sql_view.cc:
  Call set_trg_event_type_for_tables() after MYSQLparse().
sql/sql_yacc.yy:
  Move assignment of sp_head::m_type before calling sp_head::init_spname(), 
  one is now used inside another.
sql/table.cc:
  Implement TABLE_LIST::set_trg_event_map() - a method that calculates
  wh triggers may be fired on this table when executing a statement.
sql/table.h:
  Add missing declarations.
  Move declaration of trg_event_type from item.h (it will be needed for 
  trg_event_map bitmap when we start using Bitmap template instead
  of uint8).
 2007-07-12 22:26:41 +04:00
unknown
a389ec0b1b Fix for bug #18153 "ALTER/OPTIMIZE/REPAIR on transactional tables corrupt 
triggers".

Applying ALTER/OPTIMIZE/REPAIR TABLE statements to transactional table or to
table of any type on Windows caused disappearance of its triggers.
Bug was introduced in 5.0.19 by my fix for bug #13525 "Rename table does not
keep info of triggers" (see comment for sql_table.cc for more info).
.


mysql-test/r/trigger.result:
  Added test-case covering handling of triggers when one does ALTER TABLE which
  should move table to different database.
mysql-test/t/trigger.test:
  Added test-case covering handling of triggers when one does ALTER TABLE which
  should move table to different database.
sql/sql_table.cc:
  mysql_alter_table():
    Removal of strdup() which is no longer necessary allows us to preserve
    nice assumption that "(new_db != db || new_table != table_name) indicates
    that table will be renamed. So now we really can use this condition to
    avoid updating trigger definitions when table is not renamed.
    Note that we can't use (alter_info->flags & ALTER_RENAME) condition instead
    since it can be also true when we do "ALTER TABLE t1 RENAME TO t1".
sql/sql_trigger.cc:
  Table_triggers_list::change_table_name():
    Mentioned assumption that subject table is not renamed to itself in method
    description. Added DBUG_ASSERT() to catch wrong usage of this method.
mysql-test/r/trigger-trans.result:
  New BitKeeper file ``mysql-test/r/trigger-trans.result''
mysql-test/t/trigger-trans.test:
  New BitKeeper file ``mysql-test/t/trigger-trans.test''
 2006-03-24 14:58:18 +03:00