Bug#23631 "Events: SHOW VARIABLES doesn't work when mysql.event 
is damaged:


mysql-test/r/events.result:
  Update results (a post-merge fix)
mysql-test/r/events_bugs.result:
  Update results (a post-merge fix)
mysql-test/r/events_scheduling.result:
  Update results (a post-merge fix)
mysql-test/t/events_scheduling.test:
  Make sure this test has no races.
sql/event_data_objects.cc:
  Manual post-merge fix for the events replication patch.
sql/event_data_objects.h:
  A post-merge fix.
sql/event_db_repository.cc:
  A post-merge fix.
sql/event_scheduler.cc:
  We should drop the event inside ::execute since there we have
  the right credentials to do so (otherwise Events::drop_event
  returns "access denied" error).
sql/events.cc:
  A post-review fix for: rename start_or_stop_event_scheduler
  to switch_event_scheduler_state.
sql/events.h:
  A post-review fix for: rename start_or_stop_event_scheduler
  to switch_event_scheduler_state.
sql/set_var.cc:
  A post-review fix for: rename start_or_stop_event_scheduler
  to switch_event_scheduler_state.
sql/sql_yacc.yy:
  Remove unused declaratoins.

into  vajra.(none):/opt/local/work/mysql-5.1-c1


mysql-test/r/events_bugs.result:
  Auto merged
mysql-test/r/events_scheduling.result:
  Auto merged
mysql-test/t/events.test:
  Auto merged
mysql-test/t/events_scheduling.test:
  Auto merged
sql/event_data_objects.h:
  Auto merged
sql/event_db_repository.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/set_var.cc:
  Auto merged
sql/set_var.h:
  Auto merged
sql/sql_parse.cc:
  Auto merged
sql/sql_show.cc:
  Auto merged
sql/table.h:
  Auto merged
sql/share/errmsg.txt:
  Auto merged
mysql-test/r/events.result:
  e
  Use local.
mysql-test/r/events_restart_phase1.result:
  Use local
mysql-test/r/events_time_zone.result:
  SCCS merged
mysql-test/t/events_restart_phase1.test:
  Use local
sql/event_data_objects.cc:
  Use local
sql/event_db_repository.cc:
  Manual merge.
sql/event_queue.cc:
  Manual merge.
sql/events.cc:
  Manual merge.

when there are no up-to-date system tables to support it:
 - initialize the scheduler before reporting "Ready for connections".
   This ensures that warnings, if any, are printed before "Ready for
   connections", and this message is not mangled.
 - do not abort the scheduler if there are no system tables
 - check the tables once at start up, remember the status and disable
   the scheduler if the tables are not up to date.
   If one attempts to use the scheduler with bad tables,
   issue an error message.
 - clean up the behaviour of the module under LOCK TABLES and pre-locking
   mode
 - make sure implicit commit of Events DDL works as expected.
 - add more tests


Collateral clean ups in the events code.

This patch fixes Bug#23631 Events: SHOW VARIABLES doesn't work 
when mysql.event is damaged


mysql-test/r/events.result:
  Update results.
mysql-test/r/events_bugs.result:
  Update results.
mysql-test/r/events_restart_phase1.result:
  Update results.
mysql-test/r/events_restart_phase2.result:
  Update results.
mysql-test/r/events_restart_phase3.result:
  Update results.
mysql-test/r/events_scheduling.result:
  Update results.
mysql-test/r/events_time_zone.result:
  Update results.
mysql-test/t/events.test:
  Add new tests for tampering with mysql.event and some more
  tests for sub-statements, LOCK TABLES mode and pre-locking.
mysql-test/t/events_bugs.test:
  Move the non-concurrent part of test for Bug 16420 to this file.
mysql-test/t/events_restart_phase1.test:
  Rewrite events_restart_* tests to take into account that now
  we check mysql.event table only once, at server startup.
mysql-test/t/events_restart_phase2.test:
  Rewrite events_restart_* tests to take into account that now
  we check mysql.event table only once, at server startup.
mysql-test/t/events_restart_phase3.test:
  Rewrite events_restart_* tests to take into account that now
  we check mysql.event table only once, at server startup.
mysql-test/t/events_scheduling.test:
  Add more coverage for event_scheduler global variable.
mysql-test/t/events_time_zone.test:
  Move the non-concurrent part of the tests for Bug 16420 to 
  events_bugs.test
sql/event_data_objects.cc:
  Move update_timing_fields functionality to Event_db_repository.
  Make loading of events from a table record more robust to tampering
  with the table - now we do not check mysql.event on every table open.
sql/event_data_objects.h:
  Cleanup.
sql/event_db_repository.cc:
  Now Event_db_repository is responsible for table I/O only.
  All the logic of events DDL is handled outside, in Events class please
  refer to the added test coverage to see how this change affected
  the behavior of Event Scheduler.
  Dependency on sp_head.h and sp.h removed.
  Make this module robust to tweaks with mysql.event table.
  Move check_system_tables from events.cc to this file
sql/event_db_repository.h:
  Cleanup declarations (remove unused ones, change return type to bool
  from int).
sql/event_queue.cc:
  Update to adapt to the new start up scheme of the Event Scheduler.
sql/event_queue.h:
  Cleanup declarations.
sql/event_scheduler.cc:
  Make all the error messages uniform:
  [SEVERITY] Event Scheduler: [user][schema.event] message
  Using append_identifier for error logging was an overkill - we may 
  need it only if the system character set may have NUL (null character)
  as part of a valid identifier, this is currently never the case, 
  whereas additional quoting did not look nice in the log.
sql/event_scheduler.h:
  Cleanup the headers.
sql/events.cc:
  Use a different start up procedure of Event Scheduler:
  - at start up, try to check the system tables first.
  If they are not up-to-date, disable the scheduler.
  - try to load all the active events. In case of a load error, abort
  start up.
  - do not parse an event on start up. Parsing only gives some information
  about event validity, but far not all.
  Consolidate the business logic of Events DDL in this module.
  Now opt_event_scheduler may change after start up and thus is protected
  by LOCK_event_metadata mutex.
sql/events.h:
  Use all-static-data-members approach to implement Singleton pattern.
sql/mysqld.cc:
  New invocation scheme of Events. Move some logic to events.cc.
  Initialize the scheduler before reporting "Ready for connections".
sql/set_var.cc:
  Clean up sys_var_thd_sql_mode::symbolic_mode_representation
  to work with a LEX_STRING.
  Move more logic related to @@events_scheduler global variable to Events
  module.
sql/set_var.h:
  Update declarations.
sql/share/errmsg.txt:
  If someone tampered with mysql.event table after the server has
  started we no longer give him/her a complete report what was actually 
  broken. Do not send the user to look at the error log in such case,
  as there is nothing there (check_table_intact is not executed).
sql/sp_head.cc:
  Update to a new declaration of 
  sys_var_thd_sql_mode::symbolic_mode_representation
sql/sql_db.cc:
  New invocation scheme of Events module.
sql/sql_parse.cc:
  Move more logic to Events module. Make sure that we are consistent
  in the way access rights are checked for Events DDL: always
  after committing the current transaction and checking the system tables.
sql/sql_show.cc:
  Update to the new declarations of 
  sys_var_thd_sql_mode::symbolic_mode_representation
sql/sql_test.cc:
  New invocation scheme of events.
sql/table.cc:
  mysql.event is a system table.
  Update check_table_intact to be concurrent, more verbose, and less smart.
sql/table.h:
  Add a helper method.
mysql-test/r/events_trans.result:
  New BitKeeper file ``mysql-test/r/events_trans.result''
mysql-test/t/events_trans.test:
  New BitKeeper file ``mysql-test/t/events_trans.test'':
  test cases for Event Scheduler that require a transactional
  storage engine.

mysql-test/r/information_schema.result:
  Fix a race in the test case (second attempt).
mysql-test/t/information_schema.test:
  Fix a race in the test case (second attempt).

mysql-test/r/information_schema.result:
  Fix a race (updated result file)
mysql-test/t/information_schema.test:
  Fix a race in a test.

into  bodhi.local:/opt/local/work/mysql-5.1-runtime


sql/item_func.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged

into  bodhi.local:/opt/local/work/mysql-5.1-runtime


mysql-test/r/events_bugs.result:
  Auto merged
mysql-test/r/ps.result:
  Auto merged
mysql-test/t/events.test:
  Auto merged
sql/event_data_objects.cc:
  Auto merged
sql/event_data_objects.h:
  Auto merged
sql/event_db_repository.h:
  Auto merged
sql/event_queue.cc:
  Auto merged
sql/events.cc:
  Auto merged
sql/ha_ndbcluster.cc:
  Auto merged
sql/item_func.cc:
  Auto merged
sql/mysql_priv.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/set_var.cc:
  Auto merged
sql/sql_servers.cc:
  Auto merged
sql/sql_view.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged
sql/table.h:
  Auto merged
sql/share/errmsg.txt:
  Auto merged
mysql-test/r/events.result:
  Manual merge.
sql/event_db_repository.cc:
  Manual merge.
sql/sql_parse.cc:
  Manual merge.

into  bodhi.local:/opt/local/work/mysql-5.0-runtime


sql/item_func.cc:
  Auto merged

into  naruto.:C:/cpp/mysql-5.1-runtime


sql/set_var.cc:
  Auto merged
sql/mysqld.cc:
  manual merge

- Some variables in I_S.GLOBAL_STATUS were depending on a network
  connection in order to evaluate. Since no network connection is 
  present during the execution of an event, this caused the server
  to crash.
- The variable function hooks does now verify that the vio-
  object is valid before attempting to use it.


mysql-test/r/information_schema.result:
  Added test case.
mysql-test/t/information_schema.test:
  Added test case.

into  bk-internal.mysql.com:/data0/bk/mysql-5.0-opt


sql/sql_select.cc:
  Auto merged

into  bk-internal.mysql.com:/data0/bk/mysql-5.1-opt


sql/sql_select.cc:
  Auto merged

into  olga.mysql.com:/home/igor/mysql-5.1-opt


mysql-test/r/row.result:
  Auto merged
sql/sql_select.cc:
  Auto merged

into  mysql.com:/nfsdisk1/lars/MERGE/mysql-5.1-merge

into  mysql.com:/nfsdisk1/lars/MERGE/mysql-5.0-merge

into  mysql.com:/nfsdisk1/lars/MERGE/mysql-5.0-merge

into  mysql.com:/nfsdisk1/lars/bk/mysql-5.1-new-rpl

new test case until the valgrind failure is fixed, 
reported in bug 27564)


mysql-test/t/disabled.def:
  New test case shows valgrind failre

mysql-test/t/rpl_row_create_table.test:
  Adding sync to allow slave to complete cleanup drop before resetting
  storage engine.

into  mysql.com:/nfsdisk1/lars/MERGE/mysql-5.1-merge


sql/sql_base.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/table.h:
  Auto merged

into  mysql.com:/nfsdisk1/lars/MERGE/mysql-5.1-merge


sql/field.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_class.h:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/sql_yacc.yy:
  Auto merged
sql/table.h:
  Auto merged

into  mysql.com:/nfsdisk1/lars/MERGE/mysql-5.0-merge


sql/sql_base.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/table.h:
  Auto merged

into  bk-internal.mysql.com:/data0/bk/mysql-4.1-opt

conditions.
When allocating memory for KEY_FIELD/SARGABLE_PARAM structures the
function update_ref_and_keys did not take into account the fact that
a single row equality could be replaced by several simple equalities.
Fixed by adjusting the counter cond_count accordingly for each subquery
when performing substitution of a row equality for simple equalities. 
 


mysql-test/r/row.result:
  Added a test case for bug #27154.
mysql-test/t/row.test:
  Added a test case for bug #27154.

into  bk-internal.mysql.com:/data0/bk/mysql-5.0-opt

into  mysql.com:/home/psergey/mysql-5.1-merge2


mysql-test/r/range.result:
  Auto merged
mysql-test/t/range.test:
  Auto merged
sql/opt_range.cc:
  Auto merged

  After merge fix.


mysql-test/r/insert_update.result:
  After merge fix.
sql/item.cc:
  After merge fix.

into  moonbone.local:/mnt/gentoo64/work/bk-trees/mysql-5.1-opt


mysql-test/r/func_gconcat.result:
  Auto merged
mysql-test/r/insert_update.result:
  Auto merged
mysql-test/r/subselect3.result:
  Auto merged
mysql-test/t/func_gconcat.test:
  Auto merged
mysql-test/t/insert_update.test:
  Auto merged
sql/field_conv.cc:
  Auto merged
sql/item.cc:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_load.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged
sql/table.h:
  Auto merged
mysql-test/r/gis.result:
  Manual merge
mysql-test/t/gis.test:
  Manual merge
sql/handler.cc:
  Manual merge
sql/item_sum.cc:
  Manual merge
sql/sql_insert.cc:
  Manual merge
sql/sql_table.cc:
  Manual merge

into  mysql.com:/nfsdisk1/lars/MERGE/mysql-5.1-merge


sql/mysqld.cc:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged

into  mysql.com:/nfsdisk1/lars/MERGE/mysql-5.1-merge


client/Makefile.am:
  Auto merged
mysql-test/r/rpl_ndb_basic.result:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_parse.cc:
  Auto merged

into  mysql.com:/nfsdisk1/lars/MERGE/mysql-5.0-merge


sql/mysqld.cc:
  Auto merged
sql/sql_base.cc:
  Auto merged
sql/sql_select.cc:
  Auto merged

mysql-test/r/range.result:
  Auto merged
mysql-test/t/range.test:
  Auto merged

Pushbuild fixes: 
 - Make MAX_SEL_ARGS smaller (even 16K records_in_range() calls is 
   more than it makes sense to do in typical cases)
 - Don't call sel_arg->test_use_count() if we've already allocated 
   more than MAX_SEL_ARGs elements. The test will succeed but will take
   too much time for the test suite (and not provide much value).


mysql-test/r/range.result:
  BUG#26624: high mem usage (crash) in range optimizer
  Pushbuild fixes: make the test go faster
mysql-test/t/range.test:
  BUG#26624: high mem usage (crash) in range optimizer
  Pushbuild fixes: make the test go faster

into  mysql.com:/home/kent/bk/tmp/mysql-4.1-build

into  four.local.lan:/WORK/mysql-5.1-rpl/src-rpl-ddlx

into  bk-internal.mysql.com:/data0/bk/mysql-5.1-opt


sql/mysqld.cc:
  Auto merged
sql/sql_base.cc:
  Auto merged